Since the beginning the RX hybrid has been in the top ten hybrid sales column and was the most popular hybrid sport utility in 2012.

In 2010 Lexus rolled out an all new RX hybrid, the RX 450h. It not only featured a new exterior and interior design, it offered more power and significantly improved fuel economy.

For 2013 Lexus has given both the gasoline and hybrid RX models a refresh. The most obvious change is a new facelift and includes slight revisions to the backside and a modest interior makeover. Additionally for the RX hybrid, the power liftgate is now standard as is a USB interface for connection to external devices such as iPods. Also, the Sport mode is standard rather than optional for 2013.

The 2013 RX 450h is offered in a front-wheel drive (FWD) model with a base price of $46,310, an increase of $1,075 over the 2012 model, and an all-wheel drive (AWD) version starting at $47,710, up $885.

With an EPA combined fuel economy of 30 mpg – 32 city/28 highway – the RX 450h front drive model is the most fuel-efficient sport utility on the road. And the second best? The all-wheel drive version with a rating of 30 city/28 highway/29 combined.

Carryover Hybrid Powertrain

Pop the hood and you’ll find a repeat of the hybrid powertrain introduced in 2010. The system combines a gasoline engine with two electric motors for the front drive model and three motors for the all-wheel drive version. A continuously variable transmission (CVT) and nickel-metal hydride battery pack complete the system.

Like other Lexus hybrids, the RX 450h can operate in electric-only or gas-engine-only modes as well as a combination of both. And, the hybrid system can shut off the engine when the car is stopped, and then turn it on again when the brake pedal is released.

The gas-electric RX is outfitted with a 3.5-liter V-6 engine rated at 245 horsepower and 234 pounds-feet of torque. Like many engines used in hybrid vehicles, the RX hybrid’s runs on the Atkinson cycle rather than the conventional Otto cycle. In simple terms, the Atkinson cycle uses less energy to compress fuel and air together, and makes relatively more energy when that mixture explodes. Lexus says this contributes fuel savings of 12 to 14 percent.

The engine runs on exceptionally free-flowing 0W-20 oil. In modern engines, lighter oils are an important fuel economy factor, with less energy lost to friction. For the RX hybrid, less friction allows an oil pump that operates on less power.

In addition, two electric motors join this powertrain. One is an engine-driven generator that operates as an engine starter and can charge the battery pack or power other electric motors as needed. The second is a 155 horsepower motor that works with the gas engine to deliver power to the front wheels. Total output of this pairing is 295 horsepower.

The CVT is charged with managing that output and directing the power to the front wheels. The CVT uses a belt-pulley system instead of a finite set of gears in conventional automatic transmissions. It continuously adjusts gear ratios through a planetary gearset that more precisely matches engine output with acceleration and fuel economy. The driver can “downshift” and “upshift” via the shifter, but these are programmed virtual shift points, not actual fixed gears.

Completing the hybrid system is a 288-volt nickel metal hydride battery pack tucked neatly under the second-row seats. When the vehicle brakes, some of the energy is captured and sent to the battery pack.

The all-wheel drive RX hybrid adds a third, rear-mounted motor-generator. Since it aspires to all-weather mobility instead of all-terrain capability, the motor simply adds more torque automatically to the rear wheels if wheelspin is detected. A dual-range transmission is not offered.

For greater emphasis on efficiency, Lexus has outfitted the RX 450h with both EV and Eco driving modes. In EV, this hybrid functions solely on electric power, but only at low speeds and short distances. The more practical Eco mode works to limit throttle response in order to promote greater fuel economy. In other words, it restrains the engine’s ability to operate at its full potential. The ideal time to use this function is during in-town driving or stop-and-go traffic.

Updated Outside And In

To call the 2013 RX 450h an all-new design is a stretch, but it gains a notable face lift. Like all Lexuses, the RX hybrid has a version of the automaker’s new distinctive grille design. Hourglass in shape – Lexus calls it a “spindle” shape – it has horizontal rather than vertical slats with a center bar in between the upper and lower sections. Headlamps are thinner, almost blade-like highlighted by beaded LED running lights underneath. The net result is a slightly more aggressive face.

Aside from these changes and tweaked taillamps, the RX hybrid continues its sleek, aerodynamic look from front to back. Its raked windshield flows effortlessly into a gently sloping roofline. In other words, it continues to look like an RX.

The no-detail-overlooked interior of the RX 450h is sumptuous with soft leather meeting fingertips at nearly every touch point. Changes for 2013 are subtle, like a redesigned steering wheel that Lexus says has a more comfortable and relaxing grip. The glove box has new metallic accents, while a redesigned center console provides improved accessibility and more storage space.

As expected, front seating is all-day comfortable with an abundance of head, shoulder and leg room. This carries to the rear where passengers — three comfortably — will find seats that recline and move fore and aft.

There’s also generous cargo space: 40 cubic feet behind the 40/20/40 split-folding rear seats that expands to 80 cubes when they’re all lowered. If you are looking for a third row seat you’ll have to look elsewhere.

While the RX 450h does offer all the high-tech gizmos that have become synonymous with luxury class vehicles, many are an extra cost. Yes, the hybrid does include standard features such as a power tilt-and-telescoping steering wheel, ten-way power front seats, automatic dual-zone climate control, a nine-speaker sound system, satellite radio, Bluetooth connectivity and an iPod/USB audio interface.

If you want the full-meal-deal luxury experience, you’ll pay extra. Leather seating is optional as is a moonroof and roof rails that each are part of option packages.

Want a blind spot monitor, a marvelous safety feature? That’s a $500 option. It’s standard on the $23,650 Mazda3 Grand Touring.

How about a backup camera, another excellent safety device? You have to purchase the $860 Display Audio and Camera package. It’s standard on a $24,980 Honda Accord Sport sedan.

Granted, there are some very nifty options: a head-up display, adaptive cruise control, heated and cooled leather seats, dual screen rear entertainment and the superb 15 speaker Mark Levinson audio system. But it all adds up. Our all-wheel drive test vehicle was equipped with every available option with a sticker price of $63,385 plus $895 destination charges.

If you need to be connected, the $2,700 Navigation package is a must. It includes the Lexus Enform application suite. With it you can tap into Internet search engines, apps such as OpenTable, Pandora, and Yelp by pairing a smart phone via Bluetooth or a physical connection.

When you opt for the Navigation system you get the Lexus Remote Touch system, a mouse-like controller that allows moving among a variety of icons on the large dash-mounted screen. It takes a little practice to get the hang of it, but from then on it’s a breeze to operate.

Behind The Steering Wheel

We spent the long President’s Day weekend in Phoenix, where we quickly remembered why people become snowbirds – sunshine, endless blue skies and 75 degrees in February is difficult to beat.

On the top of our to-do list was to revisit Sedona and its red rocks, about 120 miles north of Phoenix. A few minutes after 8:00 a.m. as we loaded a few things in the Stargazer Black RX, the temperature was already nudging 60 degrees. We headed east on I-10 and then north on I-17 through greater Phoenix’s western sprawl, into the city itself, and then up the entire length of the ever growing northern sprawl.

Once suburbia gave way to saguaro, the speed limit increased to 75 mph, which was mainly ignored. So, when in Rome, do as the Romans do.

Tackling on-road duties is the RX hybrid’s forte. On the highway it acts much like the vaunted ES 300 sedan, just with a higher ride height. The interior remains quiet at speed and the vehicle is stable on the road, regardless of how broken the pavement.

There’s a bit of body lean in turns that lets you know this is taller than a sedan. But it grips the road like a well-designed automobile.

While the RX hybrid may mimic the ES 300, it doesn’t have the same suspension. It has longer travel that soaks up the big bumps particularly well and virtually preventing the small impacts. The ride isn’t quite firm enough to put the “sport” into sport-utility, but it’s plenty comfortable to firmly plant the RX 450h into the realm of luxury vehicles.

The famous red to orange-colored sandstone “Red Rocks of Sedona” seem to appear from nowhere as we round a curve. Choose an adjective – spectacular, astounding, wondrous, incredible, etc., etc. None seem adequate to describe their splendor. Sedona’s elevation is around 4,500 feet, with some rock formation ascending to more than a mile-high.

The red rocks aren’t the only attraction that draws more than four million visitors annually to Sedona (half of which seemed to be there on the day of our visit). The town is a major arts center with art galleries lining Sedona’s two main thoroughfares.

Slowly scouring the streets in search of a parking space, the hybrid powertrain performed its role as an electric vehicle flawlessly. Light-footed driving saw the RX deliver its power in a smooth, virtually noiseless manner and, of course, no nasty exhaust emissions.

Our previous experiences with the Lexus RX hybrid have yielded fuel economy that was at or exceeded the EPA estimates. However, keeping up with the flow of traffic in the far left lane on I-17 took its toll. A fill up after 312 miles of travel resulted in 25.3 mpg, nearly 4 mpg less than the EPA’s combined average. But, that was somewhat consoling when I thought about the fuel mileage of the full-size SUVs and pickups that whisked past us when our speedo was planted at 85 mph.

Economics

The 2013 RX 450h is pricey, $6,650 more than its non-hybrid sibling, the RX 350. The question is, is the fuel efficiency boost of 14 mpg city and only 3 mpg highway worth the additional dollars? With the current price of gas at $3.75 per gallon according to AAA, if most of your driving is city or urban, the hybrid is a pretty good choice. If you do more highway driving than city, gas-powered RX may be a better choice.

Lexus pioneered the luxury hybrid SUV segment, but there are a couple of other hybrid choices.

Audi’s 2013 Q5 Hybrid is a tad smaller inside than the RX and its 30 mpg highway fuel economy equals the Lexus. However, city driving can only muster 24 mpg in town. The starting price of $50,900 is $4,590 more than the RX but is comes standard with all-wheel drive, leather interior, navigation and a sunroof.

If performance and handling trump fuel economy, then Porsche’s Cayenne S Hybrid with a price starting at $69,850 shouldn’t be overlooked. And if you need an SUV that can seat seven or even eight passengers and can tow up to 5,800 pounds, the Cadillac Escalade Hybrid is your only choice. It starts at a hefty $73,850, bear in mind that it has a truck-based chassis platform and won’t provide the smoother ride quality as the Lexus.

Bottom line: In general, the 2013 Lexus RX 450h is the perfect all-purpose vehicle as an everyday hauler of full-size people and their stuff. It’s at its best around town, picking up people and delivering people and doing so in all kinds of weather. Plus. it delivers the best fuel economy of any sport utility.

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The IS 300h’s powertrain achieves a total system output of 220 horsepower. The homologated emissions figures for the European model confirm it will produce 99g/km of CO2 in combined cycle driving, with a 65.7mpg combined fuel consumption.

In the UK these figures will apply to the IS 300h SE model with 16-inch wheels.

The system features a 141 horsepower electric motor and a newly developed 2.5-litre four-cylinder Atkinson cycle petrol engine that produces a maximum 178 horsepower. The engine benefits from a new D-4S fuel injection system, Dual VVT-i intelligent variable valve timing and a high-efficiency exhaust gas recirculation system.

The rear wheels are driven through the hybrid powertrain’s E-CVT transmission.

The powertrain will allow zero to 62 mph acceleration in 8.3 seconds and a 125mph top speed.

The driver can modify the car’s performance by selecting between three different drive modes: EV all-electric running, with the gasoline engine switched off; Eco, for optimum fuel efficiency; Normal, and Sport, for sharper throttle response and a sportier steering setting.

The new IS hybrid lineup includes an F Sport model, which comes with sports-tuned suspension and electric power steering, as well as dedicated exterior and interior design features that distinguish it from the other models in the lineup.

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As for fuel economy, the raison d’être for hybrid vehicles, the 450h’s combined mileage rating of only 23 mpg didn’t come close to hitting the high notes associated with a gasoline engine combined with electric motors.

Straight-line performance may have been impressive, but driving enthusiasts weren’t overly enthused with the GS’s road handling characteristics, and hybrid geeks scoffed at the miles-per-gallon numbers.

For 2013, Lexus has taken a different approach for the GS 450h. This time the attention is on fuel economy, as in a 33 percent improvement in fuel mileage compared with the 2011 model. (There was no 2012 model.)

More impressively, performance wasn’t sacrificed for the newfound efficiency. Zero to 60 mph is just a couple ticks slower at 5.6 seconds—still close to V8 powered sport sedans. Complementing the engine power, steering is more responsive and handling is sharper which will appeal to those who want a car that is fun to drive.

But wait, there’s more. The 2013 GS boasts a redesigned stylish interior with more room, new features and new looks that broadcasts a new found bravado.

What hasn’t changed is the price. The new 2013 GS 450h hybrid starts at $59,450-the same price the company charged for the 2011 GS 450h. Check off all of the option packages and the price nudges $70,000.

There are two additional models in the GS lineup. The V6 powered GS 350 has a base price of $47,250 for rear-wheel drive, $49,800 for all-wheel drive. While it appears there is a $12,000-plus price premium for the GS 450h, it has a long list of standard features that are optional on the GS 350. When the 350 is comparably equipped, the price difference is closer to $5,000.

Also offered is the GS 350 F Sport that starts at $52,940 for rear drive and $55,495 for AWD. Although the powertrain is the same as the standard trim level, the F Sport adds a dose of aggressiveness with features like the Lexus Dynamic Handling system with active dampers, four-wheel steering and variable steering ration.

Of note, it’s a given that Europe takes sports sedans seriously and Lexus offers the GS 450h in F Sport trim for Euro markets. The automaker is considering the hybrid F Sport for the U.S, for which we say, what are they waiting for?

Lexus Hybrid Drive, Version Two

The 2013 GS 450h is equipped with a second generation Lexus Hybrid Drive system that combines a gasoline engine and two electric motors. It requires no plug-in charging; the nickel-metal hydride battery pack’s electricity is replenished primarily by capturing energy dissipated during braking and coasting.

Lexus names its hybrid models differently than those with conventional powertrains. It calculates the GS 450h has the comparable power of a 4.5-liter gas engine when the hybrid’s 3.5-liter V6 engine is combined with the electric motor.

The 450h continues as a series-parallel hybrid, or “full hybrid,” meaning it can travel on the electric motor alone, the gasoline engine alone, or a combination of the two determined by onboard sensors that balance power and economy.

Changes to improve fuel economy begin with the normally aspirated 286 horsepower V6 gas engine carried over from the previous model.

Part of the improved consumption is the result of increasing the engine’s compression ratio from 11.8 to 13:1. Additional fuel savings comes from Lexus’s dual-injector system that combines direct fuel injection with port fuel injection for each cylinder, which also achieves improvements in torque and emissions.

Lexus says that changing from the conventional four-stroke Otto cycle to the more fuel efficient Atkinson cycle contributes fuel savings of 12 to 14 percent. While the Atkinson cycle relinquishes some power in exchange for efficiency (in this case, six horsepower), it is made up with the electric motor, so total output remains at 338 horsepower.

That extra power to drive the rear wheels is produced by a water-cooled 200 horsepower 650-volt electric motor generator. A secondary 180 horsepower motor is the primary generator as well as fulfilling the roles of engine starter and engine speed controller.

Also aiding reduced fuel consumption is improved cooling of the hybrid’s power control unit (PCU). In the GS hybrid’s Eco mode, the PCU takes it a step further by limiting the drive motor to a maximum of 500 volts. And lastly, the system’s regenerative braking operation range has been expanded, contributing to further improvements in fuel efficiency.

The 30-kilowat battery pack is carried over from the 2011 model but the battery layout has been redesigned. A new stacked configuration increases trunk space from 9.5 cubic feet to 13.2 cubic feet.

Like many hybrid vehicles, the GS 450h employs a continuously variable transmission, or CVT. It plays the role of an automatic but uses a belt-pulley system instead of a finite set of gears. The intent is continuously adjusting gear ratios through a planetary gearset that more precisely matches engine output with acceleration and fuel economy. Steering wheel paddles allow drivers to “downshift” and “upshift” but these are programmed virtual shift points, not actual fixed gears.

As in other hybrid models, the Lexus Hybrid Drive’s electric motor, generator, power-split planetary gear mechanism and motor-speed reduction gearing are all housed in one lightweight, highly compact transmission housing.

What are the fuel economy results of this second edition hybrid system? An EPA estimated 29 city, 34 highway and 31 combined mpg, an astounding improvement compared to the previous GS hybrid’s rating of 22/25/23 combined mpg.

Of course if you drive it like it’s capable of being driven, you won’t achieve anything like those numbers.

Design Gets An Injection Of Adrenaline

With the 2013 GS-series, Lexus broke away from its reputation of styling blandness and presents a visual intensity of passion and drama. The 2013 Lexus GS introduces the new Lexus family styling, called L-finesse. The design establishes an emotional connection not unlike a BMW or Mercedes-Benz owner experiences.

It starts with an aggressive, angular front with a new “spindle” grille flanked by deep-set headlamps that will most certainly encourage other road users to move over swiftly. Distinctive air inlets on either side of the wide lower grille make the statement that this is a serious sport sedan.

In profile the GS hybrid isn’t quite as expressive and has a more formal look. But burly fender bulges and a sculpted lower skirt again confirm the car is an authentic sport sedan. At the rear, taillights establish a style that carries over to the LS and ES models.

The GS 450h can be distinguished by concealed tailpipes and Lexus’ now signature blue hybrid badging.

A Notably Richer Interior

With an all-new exterior comes a fully redesigned interior. In the Lexus tradition it is finely crafted marked by contrast-stitched leather upholstery and aluminum accents that contribute to a casual-luxury ambience. GS 450h cabins have bamboo accents to reinforce the environmental-sustainability message of the hybrid powertrain.

Crisply lit gauges continue as a Lexus trademark but the new dash features a more contemporary layout that is divided in to two distinct zones, with a horizontal plane splitting them.

The top zone, or display zone, includes the instrument cluster and LCD screen – 12.3-inches-wide when equipped with the optional navigation system. Centered below the screen is a new analog clock with LED indicators, carved from a single ingot of aluminum.

Below the screen, the lower zone is placement for the audio and climate controls. A substantial center console houses the selector for “Eco”, “Sport” and ”Sport Plus” modes and a conventional auto shifter with a leather-trimmed shift knob.

Instruments are all analog, presented using digital technology. That means that the rev counter only appears when the car is in Sport mode, otherwise it displays the battery state-of-charge.

The new GS hybrid carries over the same wheelbase and overall length, but is 1.2-inches taller and two-inches wider, gaining head, shoulder and hip room. Up front, the driver and passenger are cosseted in firm, supportive seats that can be heated or cooled. Passengers in the rear will find the seats all-day comfortable for two, not so much with three.

Today, the battle to gain a luxury car buyer’s attention goes beyond luxurious surroundings and comfort; it includes the latest high-tech infotainment gear for connectivity and entertainment. Here, Lexus can stand shoulder-to-shoulder with any competitor.

Standard electronic features include Bluetooth connectivity, text-to-speech text messaging and a surround-sound audio system with a CD changer, satellite radio, an iPod/USB interface and an auxiliary audio jack.

With the optional navigational system, the 12.3-inch screen is split in to two sections, displaying simultaneous viewing. On the driver’s side, a large panel shows a map display, audio or other similar info that needs to be large and easy to read, while a second smaller section covers less important details and some menu options.

The system is also the gateway to the Lexus Enform application suite. Pair a smart phone via Bluetooth or a physical connection, and you can tap into Internet search engines, apps such as Pandora, OpenTable and Yelp or access your Facebook.

The electronic wizardry continues with available features such as blind-spot monitoring, lane-departure prevention system, adaptive cruise control, head-up display, pre-collision warning system and an automated parallel parking system.

Driving Impressions

Unseen, but significant, body and chassis changes to the 2013 GS 450h brings precision to the driving experience that luxury buyers demand. It’s effortless, but there’s now a sense of involvement that was lacking in previous Lexus offerings.

The new platform is more rigid, and the track-the distance between opposite wheels-is wider by almost two inches. Engineers increased the use of aluminum for the front double wishbones and a revised multilink setup in back uses a new rear subframe and more aggressive geometry. With the stiffer platform and lighter components, shock absorbers use lighter-viscosity oil, so they move easily and respond to small inputs more quickly.

The most notable ride and handling enhancement is the Lexus Adaptive Variable Suspension. It’s an option on the GS 350 but is standard on the hybrid model. The system constantly adapts to driving and road conditions and is driver adjustable.

The ride’s absorbency suggests the sponges in the suspension are from Neiman Marcus. Even in the sportiest Sport Plus driving mode the ride is taut, but still comfortably compliant. Bumps and those pesky expansion joints have a negligible impact.

Weighing some 4,190 pounds, the rear-drive 450h is no lightweight, but its variable-geared electronic steering, the well-sorted chassis and suspension and adaptive suspension contribute toward making the car manageable, nimble and grippy on twisty roads, while also helping it feel very stable and planted at high speed.

There is nothing like a well-balanced rear-drive sedan on a winding road in terms of feedback combined with comfort. I particularly liked the steering, which communicates quite well with the road surface, is responsive and offers just-right levels of steering assist.

The arresting characteristic about the GS hybrid is its vivid performance when both the engine and the electric motor are at maximum output. The machine smoothness of the V6 and the sheer punch of the electric motor are distinct, delivering the sense of pure, naturally aspirated performance.

In all honesty, though, most of the time we had the GS 450h in Eco mode-where the dials go blue, as opposed to red in Sport Plus mode-with most of the 126 miles consisting of in town driving trying our best to conserve fuel and not frustrate other drivers with our moderate speeds. The results were 29.7 mpg, slightly better than the EPA’s estimate of 29. That’s compared to 24.7 mpg during our 89 miles of “let ‘er rip” backcountry road driving.

Our consensus is the GS hybrid’s best trick is being an excellent luxury sport sedan and an excellent hybrid at the same time.

The Hybrid Sport Sedan For You?

When introduced in 2007, the GS 450h was the only luxury hybrid sport sedan available. Today, however, there are other highly respected competitors who are vying for the same buyers, each offering performance and credible fuel economy numbers to go along with their presentation of luxury.

The closest GS hybrid competitor is Infiniti’s M35 Hybrid. Its hybrid system gives consumers a different flavor of hybrid technology. Unlike the Lexus, which uses a CVT, the Infiniti drives the rear wheels with a conventional seven-speed automatic transmission, the intent being more spirited performance. With a sticker price of $54,650 the M Hybrid is $4,800 less than the GS hybrid but its fuel economy of 27 City/32 Highway/29 Combined is bested by the Lexus numbers of 29 /34 /31.

If German engineering is your preference, BMW’s ActiveHybrid 5 should be on your shopping list. Starting at $61,100, the price of entry is higher than the GS 450h plus, fuel economy numbers of 23 /30 /26 are markedly less than both the Lexus and Infiniti. But laudable engineering, driving excitement, strong resale value and, yes, prestige, are part of the BMW package.

Mercedes-Benz’s entry into the luxury hybrid segment is the E400 Hybrid that offers fuel economy numbers of 24 /30 /26. Unlike the others, the E400 is more about the luxury experience that Mercedes is known for rather than performance, even though the starting price of $55,800 is the least expensive entrant.

Perhaps the pinnacle of luxury hybrid sport sedans is Porsche’s Panamera S Hybrid. It brings with it what Porsche is all about, a performance and handling distinction that takes a back seat to no one. Those credentials also brings a high price tag-$96,150-but the fuel economy stats of 22 /30 /25 take the back seat compared to the other offerings.

The 2013 Lexus GS 450h is a standout for a car of its size, performance, luxury and comfort. Yes it’s pricey, but it is evidence of how skillful engineering can make a hi-tech car that simply gets on with the job while delivering relatively good fuel economy and low emissions.

Prices are Manufacturer Suggested Retail Price (MSRP) at time of writing and do not include destination charges, taxes or licensing.

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The glasses never quivered, but they sent a shock wave through the automotive luxury market. The year was 1989 and the car was the 1990 Lexus LS, the first entrant from Toyota’s new luxury division.

A departure from the European notion of luxury sedans, the flagship LS was created for the American market and has impressed buyers from the very beginning with its remarkable quality, attention to detail and levels of comfort and convenience.

It is often said that lightning doesn’t strike twice in the same place. However, never content to rest on its market success, Lexus again created tremors throughout the luxury car arena with the introduction of the fourth generation LS in 2007. This latest flagship edition not only blended new levels of luxury refinements, sophistication, performance and contemporary styling, a long-wheel base model breached the stronghold held by its European competitors.

And if that wasn’t enough, Lexus shook things up even more with the announcement of the LS 600h L, a long-wheel base hybrid model – the first automobile to mate an electric drive system to a V8 gasoline engine.

But it’s been six years between major redesigns-a long time in the auto world-and the LS has languished as rivals introduced new stylish, technology-laden models, including hybrid offerings. The Lexus top-of-the-line sedan was no longer on the top-of-the-heap in a relatively exclusive segment.

Almost All New For 2013

After receiving minor exterior updates in 2010, the LS 600h L, along with the gasoline-powered LS models, has been significantly revised for 2013. More than a refresh, but not quite a clean-sheet redesign, the new LS struts a bold new exterior, an updated driver-focused interior, more tech gadgets and added creature comforts.

Lexus says that more than 3,000 of the 6,000-plus parts in the LS series are new or have been refreshed for the 2013 model year. For example, the only parts carried over from last year’s exterior are the doors.

In addition to the nearly $120,000 LS Hybrid, the non-hybrid model lineup includes the standard length rear-wheel drive LS 460 that has a starting price of $71,990; all-wheel drive adds $2,945. The extended length version, LS 460 L, starts at $78,290 for rear drive; $81,775 for A-WD.

New for 2013 is the performance-oriented LS 460 F Sport model. It combines a more aggressively styled exterior with an exclusive sport interior, a sport tuned air suspension that has been lowered 0.4 inches, a Torsen limited slip rear differential, Brembo six-piston caliper brakes, and 19-inch forged wheels with summer or all-season tires. The F Sport rear drive starts at $81,990, and $84,885 with A-WD.

For 2013, the LS 600h L has a sticker price of $119,910, a hefty jump of $7,160 over the outgoing model. Estimated EPA fuel economy carries over from last year at 19 city/23 highway and 20 mpg combined.

Familiar Hybrid Powertrain

The LS 600h L returns with a largely unchanged gasoline-electric powertrain, save reprogramming of the electronically controlled continuously variable transmission (eCVT) and minor changes that make the regenerative braking stronger with better brake pedal feel.

As with other Lexus hybrid models, the LS hybrid’s “600” suffix doesn’t refer to the engine’s cubic capacity as it does with gasoline-powered vehicles. Instead, the LS 600h L refers to the comparable power of a 6.0-liter engine when the hybrid’s 5.0-liter V8 gas engine is mated to the electric motor.

The normally aspirated V8 produces 389 horsepower and 385 pounds-feet of torque. It features a dual-injector system that combines direct fuel injection with port fuel injection for each cylinder, which achieves significant improvements in torque, fuel economy and emissions. It is also equipped with Lexus’’ dual VVT-i variable intake and exhaust valve timing system that incorporates an electric motor to control intake valve timing.

The engine’s low-friction and extremely precise low-tolerance design allows it to use thin, economical OW-20 engine oil.

There are two electric motor generators, each executing specific functions. One performs as the primary generator and engine starter but provides no motive force. The second drives the wheels and manages regenerative braking that converts kinetic energy to electrical energy to recharge the nickel-metal hydride battery pack. When combined with the gas engine, total system output is 438 horsepower.

The system is a “full hybrid,” meaning the car can be powered by the gas engine only, the electric motor only, or both at the same time. The big car can operate on electric power only for about one mile at speeds up 25 mph. When the car comes to stop the engines shuts off, and then starts again when the brake pedal is released.

Unlike its gasoline-only cousins, the LS 460 and LS 460 L, both of which are rear wheel-driven with optional all-wheel drive, the hybrid limousine is an all-wheel drive configuration only. A Torsen limited-slip differential splits torque 40 percent front/60 percent rear during normal driving conditions. If the road surface becomes slippery, it is capable of a near 50/50 split.

Power is directed to all four wheels through the dual stage eCVT that features sequential shift modes, allowing manual selection of eight different stages of acceleration response. The transmission also has three driver selectable modes-normal, power and snow.

Additionally, a control knob allows drivers to choose the way they want to operate the hybrid powertrain: Normal is a balance between fuel economy and performance; Eco dials back throttle response for the best fuel mileage; and the Sport S+ mode disregards fuel consumption to deliver maximum performance. There is also an EV mode for driving under full electric power at low speeds.

Finally, Styling That Grabs Attention

In the past, the LS was technologically top-notch. Comfort was first class and refinement was exceptional-but styling was boxy and shapeless. In comparison, Lexus has finally nailed it with the 2013 model and the LS 600h L looks good from any angle. Yes, it’s still big but now it’s sleek with flowing lines and has an imposing presence.

The signature styling feature is its sewing spindle-shaped trapezoidal grille that made its debut on the GS sport sedans. The upper grille and slanted lower grille have been combined and integrated into a single element that projects an aggressive frontal design. Jelly bean-shaped headlamps have been replaced with swept back lens design that flows into bulging front fenders.

In profile, a sculpted lower rocker panel carries the dramatic new look rearward to the rear, which has a tapered appearance, conforming to the front styling. A pair of large chromed exhaust tips underlines the car’s performance characteristics.

The newly shaped exterior is more than just eye pleasing. Numerous stabilizing fins and underbody air management result in a drag coefficient of just .26, making the LS Hybrid one of the most aerodynamic cars in its segment.

A Cabin That Indulges

As the standard-bearer that has to take on the elite of the world, the 2013 Lexus LS 600h L leaves no need unfulfilled or wish ungranted to driver and passengers. The cabin has always been relaxing but the 2013 model is even more sumptuous, with front and rear occupants cosseted like passengers in an executive-class jet.

Space is simply not an issue. With its long wheelbase configuration, the LS hybrid’s interior is positively cavernous providing ample room for legs, heads and arms in all directions.

Seats adjust in more ways than the average body thought possible. The four-zone climate control can sense individual body heat and adjust the temperature accordingly, and includes an overhead air diffuser.

The rear of the cabin is positively regal. An Executive Class Seating Package forgoes the standard five-seat layout for two rear seats with seat heating and cooling. It features a right rear seat with a remote control that reclines the seatback 45 degrees, raises an ottoman and then gives a relaxing shiatsu-style massage that can ease the day’s tension of any chairman of the board.

Need to make some notes? A hide-away wood table takes care of that. Want a chilled beverage? A cool box is available. How about a movie? The entertainment system features a Blu-ray DVD player, an SD card slot and a retractable, ceiling mounted, nine-inch full-color VGA screen.

And if all that doesn’t fulfill your luxury needs, this hybrid pleasure cruiser also offers the superb Mark Levinson audio system. It’s like having the best seat in the house at a concert.

Opulent? This thing’s a Ritz Carlton hotel on four wheels.

Complementing the luxury amenities, the 2013 LS 600h L adopts the two-zone dash layout of all new Lexus vehicles. The design is stylish in a business-like manner and refreshingly simple to use, despite a vast array of equipment.

Most notable is a 12.3-inch LCD screen in the center of the dashboard. It displays the navigation system, climate, phone and stereo, with redundant buttons for the climate arranged below it. Tons of tech features are easy to figure out including the navigation system and the Lexus Enform App Suite that allows connection to the Bing search engine, iHeartRadio and Pandora, ordering movie tickets and making dinner reservations. The display is maneuverable with an easy-to-use, but somewhat sensitive joystick in the center console.

The passenger-focused interior is well crafted with an abundance of rich leather and shimamoku (“striped wood”) and other real wood accents. Meticulous attention to detail ensures that all the fixtures and fittings feel solid and precise in operation.

High-Tech Safety Showcase

The 600h not only delivers the full executive-transport experience, it is dedicated to safe travel.

This is a car that can slam on the brakes if it thinks you’re going to crash, move headrests if it senses a rear-ender and constantly watches you face to make sure you’re paying attention.

Nod off or look out the side window when your eyes should be looking at the car that suddenly lurches in front of you from a side road it will ring bells, flash lights and even brake to jolt you out of your inattention.

Lane assist will help keep you in the intended lane, while a blind spot monitor keeps track and alerts you when vehicles are in rear-side blind spots. A forward-looking radar sensor and two cameras help detect obstacles in the car’s path, including pedestrians and at speeds lower than 24 miles per hour, automatically bring the LS to a full stop.

The adaptive cruise control can now operate at any speed, plus it is able to bring the vehicle to a complete stop and then accelerate once the flow of traffic has resumed.

Driving The LS Hybrid

Lexus staged the West Cost media introduction of the 2013 LS 600h L at the Lodge at Torrez Pines in La Jolla, California. Appropriate, since the lodge is rated one of the top luxury resorts in the nation and earned the highest level from the California Green Lodging Program. Its location also offers easy access to a variety of driving situations—city, freeway and challenging two-lane twisty roads in nearby foothills.

There are few cars, if any, as quiet as the LS hybrid, and not just when the car is stopped and the gas engine shuts off. It is so remarkably hushed that frequent checks of the tachometer are required to know what’’ going on.

On the streets of La Jolla, the hybrid system was a paradigm of smoothness, so much so that it was near impossible to detect the transition from electric power to engine power and vice versa. Electric-only driving was best accomplished by accelerating from stop to around 30 mph then lifting off. From there, a light foot can indeed propel the car with electrons for the Lexus claimed mile or so.

We found that Eco mode was livable for in town driving. It significantly dials back throttle response, but on crowded streets why not save a little fuel.

Street ride quality is what you would expect from a luxury sedan of this caliber-very sweet. Select the standard air suspension’s “Comfort” mode and the supple suspension easily absorbs any road imperfections. Few modes of transport can whisk you along a roadway in such a comfortable, serene manner.

The big Lexus doesn’t pretend to be a sports sedan, but switching the air suspension mode to Sport introduces a different personality. The throttle input perceptibly changes, the suspension firms up and steering becomes more resistant.

All-wheel drive provides substantial grip and the car drives considerably lighter than its 5,200-pound curb weight implies. Despite its heft and girth, it easily strings a few corners together with enviable flair. The revised electric power steering is tighter and is responsive with good road feel. Brakes are light but not touchy, reassuring but not grabby.

There’s silence when you pull away, but mash the throttle and the 5.0-litre V8 kicks in with a lovely, smooth crescendo: the LS feels every bit as quick as its claimed 5.5- second 0-60 mph time suggests.

Of course most owners will drive, or have someone drive, the 600h in a sensible manner and will be rewarded with a serene ride. However, should an owner want to sneak away from the top floor corner office and head for a backcountry road, the drive can ease the tension of a stressful day.

Lexus LS 600h L In The Marketplace

The LS 600h L caters to environmentally conscious luxury sedan buyers, a very discerning clientele. When introduced in 2007, Lexus aimed to sell 1,200 to 2,000 units a year in the U.S., but that never happened. The best sales year was 2008, with 980 cars sold and the numbers have diminished every year with 2012 tallying only 54 units.

Those disappointing numbers can be attributed to a shrinking number of buyers caused by the economic turndown and the entry of other luxury hybrid models. For 2013, Lexus says it projecting sales of four to five units per month.

While the 600h is a brilliant showcase of elegance and technological sophistication, the base price of $119,910 makes it the most expensive gasoline-electric hybrid in the world. Add option packages and the price jumps to north of $130,000.

Affluent eco-minded buyers have other choices starting with the all-new 2013 BMW ActiveHighbrid 7L. Like the Lexus, it is offered in only a long-wheel base configuration and is also available with similar creature comforts such as a massaging rear seat and a host of high-tech equipment.

What makes the BMW a formidable competitor is price and fuel economy. The 2013 edition had a dramatic price decrease from $101,000 for the outgoing model to $84,000 and has an EPA estimated 22 city/30 highway and 25 combined.

Another option is the Mercedes-Benz S400 Hybrid. While it doesn’t offer a stretched wheelbase, the V6 hybrid powertrain has a fuel economy rating of 19 city/25 highway and 21 combined. It’s priced starting at $92,000.

If performance and handling is a priority, Porsche’s Panamera S Hybrid can fulfill that need while matching the BMW’s fuel economy numbers, but at a cost-$96,150.

Lexus is marketing the LS 600h L as a responsible flagship, something best presented in hybrid form. It is surely the quietest, serene luxury-class sedan available. It offers an excellent combination of comfort, space silence and features. It’s also the most electronics-intensive car I’ve experienced.

If silent, luxurious transportation with a hybrid powertrain that offers a precious few more miles-per-gallon appeals to you, and you can afford the price, this is the car to have.

Prices are Manufacturer Suggested Retail Price (MSRP) at time of publication and do not include destination charges, taxes or licensing.

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After leaving the original RX hybrid series dormant in 2009, Toyota came back in the 2010 model year with the 450h, which offered more power and significantly improved fuel economy. The current model may only be three years old, but with competitors rolling out updated or all-new premium crossovers, it’s already high time for the RX to be refreshed. Mechanically, this is the same vehicle as its previous model.

For 2013, Lexus has given the RX 450h and its gasoline sibling a mild face-lift, revisions to the backside and a modest interior makeover. The RX 450h is available in a front-wheel drive (FWD) model with a base price of $45,910, an increase of $675 over the 2012 model, and an all-wheel drive (AWD) version starting at $47,310, up $465.

Under The Hood

The gas-electric RX 450h features a 3.5-liter V6 Atkinson-cycle engine (a more fuel-efficient version of the conventional four-stroke Otto-cycle engine) that is rated at 245 horsepower and 234 pound-feet of torque. The front-drive model’s hybrid powertrain employs two motor-generators. One is an engine-driven generator that operates as an engine starter and can charge the battery pack or power other electric motors as needed. The second is a 167-horsepower motor that works with the gas engine to deliver power to the front wheels. Total output of this pairing is 295 horsepower. And no, the combined horsepower rating of 295 is not a typo. Peak output for the RX 450h’s gas engine and electric motor occur at different rpm ranges. Therefore, combined power ratings represent peak power delivery in real-world operating conditions and take into account the unique rpm when each peak occurs.

The engine and drive motor are connected to a continuously variable transmission, which is engineered to manage the various sources of power in a way that maximizes the RX 450h’s efficiency. Beyond the engine and the motor, there’s a 288-volt nickel metal hydride battery pack tucked neatly under the second-row seats. When the vehicle brakes, some of the energy is captured and sent to the battery pack.

A third, rear-mounted motor-generator is added on the AWD model to drive the rear wheels. Though the luxury hybrid SUV is an all-wheel drive vehicle, it is not suited for off-road driving. The system does not have a mechanical driveshaft from the front to the rear, and doesn’t require power-transfer gearing. Instead, it simply demands more torque from the rear electric motor as road conditions demand.

Like all Lexus hybrids, the RX 450h can operate in electric-only or gas-engine-only modes as well as a combination of both. Under certain circumstances, a driver-selectable EV mode can allow the vehicle to be driven short distances (read: a mile or so) using only the electric motors. And, with the batteries sufficiently charged, the hybrid system can shut off the engine when the car is stopped, and then turn it on again when the brake pedal is released.

The result of this electronic wizardry when combined with the V6 is an EPA fuel mileage rating of 32/28 city/highway and 30 combined for the FWD model, while the AWD version has estimates of 30/28/29. As for emissions, the RX 400h achieves California’s Super Ultra Low Emission Vehicle (SULEV) certification.

Exterior

The 2013 Lexus RX 450h’s signature styling feature is its sewing spindle-shaped trapezoidal grille that’s already made its debut on the GS sport sedans. The upper grille and slanted lower grille have been combined and integrated into a single element that projects an aggressive frontal design. A new headlamp shape incorporates LED daytime running lights that reflect the Lexus “L” design motif, as do the redesigned combination rear lamps, an as do also the combination rear lamps.

The fastback profile hasn’t changed and the RX 450h continues with pronounced front fenders that flow into the doors, along with integrated rear fender flares that neatly sweep around to pull together the taut rear corners of the vehicle.

Interior

Changes to the interior are subtle, including a redesigned steering wheel that Lexus says has a more comfortable and relaxing grip. The glove box receives new metallic accents and designers squeezed more storage room in the center console. The cabin also gets new Ebony Bird’s-Eye Maple wood trim and available Saddle Leather interior. In addition to ECO mode, for 2013, Lexus added a Sport mode that modifies the steering effort, throttle mapping and transmission shift priorities to provide a quicker response to driver inputs.

Inside, the RX 450h is everything you’d expect from a luxury SUV, but some features you might expect to come standard will cost a little extra. The 450h comes standard with a power tilt/telescoping steering column, a nine-speaker sound system, an interactive information screen, dual-zone climate control and a power liftgate among others. But if you really want the full luxury car experience you’ll have to pay more. Leather seating is now extra; a 15-speaker sound system is available, as are video monitors for blind spots, and most importantly, Lexus’ Remote Touch control system, which is packaged with the optional navigation system.

Lexus believes Remote Touch is the technology that will replace touch-screen consoles, which require too much attention and reach from the driver. With Remote Touch, the driver can navigate the vehicle’s onboard computer using a small touch-activated joystick located at the base of the center console. Though there is a bit of a learning curve, once you get the hang of it remote touch is a revelation.

Like the luxury brand’s other hybrids, the RX 450h’s display screen can display the power flow between the drivetrain’s electric motors, engine and battery. In place of the RX 350’s tachometer is a gauge showing electric motor assist versus battery recharging.

Standard 10-way power front seats are shaped and cushioned for long-haul comfort, and abundant seat and steering wheel adjustments make it easy to tailor a comfortable driving position. Rear seats mimic the fronts’ comfort plus, they slide fore and aft, as well as recline.

Behind the rear seats, the RX 400h has an average amount of space for a five-passenger midsize SUV. It provides 40 cubic feet with the seats up and 80.3 cubic feet with the rear seats folded down.

On The Road

The hybrid powertrain is seamless in operation and the engine stop/start function is imperceptible. Overall, the RX 450h delivers a very quiet and a comfortable, car-like ride. Power delivery is immediate, but smooth, and merging, passing or moving through fast traffic is effortless.

When it comes to handling, the RX is no corner carver. It is a tall, heavy vehicle, with the suspension dialed toward comfort resulting in noticeable body roll, even on gentle curves. In other words, exciting performance is absent.

But the “fun factor” isn’t the whole story when it comes to the RX 450h. Sure it’s what gets people who test drive cars for a living out of bed every morning, but most drivers are looking for something smooth, safe and fuel efficient – qualities the RX 450h has in spades.

And about that fuel efficiency; our 127-mile test drive of an AWD model a couple years back yielded 31.6 mpg, easily beating EPA numbers.

Economics

The RX 450h is quite expensive. The starting price of $45,910 means that the added fuel economy comes at a cost of $6,600 over its non-hybrid sibling, the RX 350. For city driving, this efficiency boost is 14 mpg, on the highway the difference is a much more modest 3 mpg. Even with fuel prices where they are, it may not be possible for this hybrid to recoup its higher cost from its overall efficiency.

For about $1,500 less than the base FWD RX hybrid, a Toyota Highlander Hybrid Limited comes with a host of luxury standard features, including leather seating, which is optional on the 450h. Plus, it seats seven, all-wheel drive is standard and its 28/28/28 fuel mileage rating isn’t that far off the Lexus.

If you’re set on a luxury crossover but sporty performance is more important than fuel economy, check out BMW’s X5. It’s one of the sportiest in the luxury SUV segment, and each of its turbocharged engines packs plenty of punch. Starting at $47,500 the X5 is expensive compared with the rest of the class, but not much more expensive than the Lexus RX 450h.

Want luxury, good handling and above average fuel economy? The diesel-powered Volkswagen Touareg shouldn’t be overlooked. The interior is spacious, comfortable and the quality of the materials and fit and finish are top drawer. The VW’s twin-turbocharged diesel engine spools out 225 horsepower and a massive 406 pound-feet of torque while delivering an EPA fuel economy rating of 19/28/22. Priced starting at $46,875, it’s more fun to drive than the Lexus but not more than the BMW.

Bottom line: There are more powerful, entertaining and attractive means to transport five people and their weekend gear, but that’s not what the RX hybrid is about. It’s about the destination, not the drive. And, finances aside, this crossover appears to have more value as a green, eco-conscious alternative for people with money, who want to do their small part to mitigate climate change or reduce oil dependence.

Prices are manufacturer suggested retail price (MSRP) at time of publication and do not include destination charges, taxes or licensing.

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Lexus aimed to sell 1,200 to 2,000 units a year in the U.S., but that has not happened. The best sales year was 2008, with 980 cars sold and the numbers have diminished every year with 2011 tallying only 84 units. Just 19 buyers stepped up in the first quarter of 2012.

Those disappointing numbers can mostly be attributed to the entry of other high-end luxury hybrids. Offerings from BMW, Infiniti, Mercedes-Benz and Porsche are not only thousands less, they also offer more engaging driving performance, and with some models, better fuel economy.

The LS 600h L received minor exterior styling updates for the model year 2010 and there are no significant changes for the 2012 model year. Base price is $112,750, and the EPA estimated fuel economy is 19/23 city/highway and 20 mpg combined.

Lexus Hybrid Drive

When the LS 600h L was introduced, Lexus began referring to the hybrid system in its luxury models as Lexus Hybrid Drive, replacing Hybrid Synergy Drive, which continues to describe the Toyota version.

As with the Lexus RX and GS hybrid models, the 600h’s “600” suffix refers not to the cubic capacity of the engine but to a relative power output. In this case, comparable to that of a 6.0-liter V12 normally aspirated engine. Clearly, Lexus is targeting the Mercedes-Benz S600, Audi’s A8 L W12 and BMW’s 760Li extended wheelbase sedans, all 6.0 liters and graced with elite 12 cylinder engines. However, the LS Hybrid comes up short in the power department, with total system output of 438 horsepower. Rivals Audi and Mercedes each produce 500 horsepower while the BMW 760Li resides in an entirely different motoring world, with a turbocharger churning out 544 horsepower from its V12.

The hybrid powertrain starts with a 5.0-liter specially tuned V8 that produces 389 horsepower. There are two motor generators, each performing specific functions and can operate as either a motor or a generator, although one is used as a starter motor and provides no motive force. The second motor, when combined with the V8 put out 438 horsepower. The system is a “full hybrid,” meaning the car can be powered by the gas engine only, the electric motor only, or both at the same time.

Unlike its gasoline-only cousins, the LS 460 and LS 460 L, both of which are rear wheel-driven with optional all-wheel drive, the hybrid limousine is an all-wheel drive configuration only. During normal driving conditions, power is split 40 percent front/60 percent rear via a Torsen limited-slip differential. If the road becomes dicey, it is capable of a near 50/50 split.

A dual-stage continuously variable transmission (CVT) with a sequential shift mode allows manual selection of eight different stages of acceleration response. It also features the selectable modes of the company’s conventional models: “power” and “snow” in addition to a “hybrid” mode.

Unrivaled Elegance and Comfort

The three previous generation LS sedans were often chided for a lack of expressive styling. Those remarks can be discarded – the long wheelbase 600h is a classic work of elegance and sophistication. It may be big, but it is sleek with complex, yet smooth flowing lines. The design was penned at Toyota’s Global Design center in Tokyo and received styling cues of Lexus’ latest design direction, called L-finesse. A key detail in the car’s appearance is its projector-type LED headlamps, which designers wanted to possess crystal-like properties. Actual crystal lenses were crafted in researching what was to become the final result.

There’s little to distinguish the hybrid from its gasoline-powered counterparts. The grille is slightly – but only slightly – bolder and special touches include discrete badges along with blue accents on head- and taillamps.

As its flagship, Lexus left no need unfulfilled or wish ungranted to driver and. There seems to be acres of supple leather accented by rich wood, which is sequenced matched, by the way. Press the starter button and strikingly sharp electroluminescent instrumentation jumps to life and complements a smart arrangement of clearly marked, easily reached controls that feel good to the touch and move with precision. Exclusive to the hybrid is a power-flow diagram on the dashboard’s central LCD screen.

Seats can be heated or cooled, moved up or down and back and forth, adjusted for lumbar support and reclined. Genuine leather on the steering wheel is buffed for three hours to create a supple touch.

For the preeminence in comfort and coddling, the 600h offers a rear seating option best described as the “Ultimate Barcalounger.” With a remote control, one can stretch back, raise an ottoman to desired height and then enjoy a massage that can ease the day’s tension of any chairman of the board.

Technoluxury

The LS 600h L is one of the most technologically dense automobiles you can buy. There’s a power rear ceiling-mounted 3.0 VGA 9-inch entertainment screen. Occupants’ body heat is measured with infrared sensors to adjust the cabin temperature while ceiling climate diffusers gently distribute air movement.

The amply sized LS 600h L – provided it has the right options – parks itself. Pull up to a space, select reverse and the car steers automatically into the gap, using sensors and a rear view camera. All the driver needs to do is modulate the brakes.

And if all that isn’t enough for your luxury needs, this hybrid pleasure cruiser also includes a stunning 19-speaker Mark Levinson audio system with Bluetooth streaming audio, iPod and MP3 connectivity voice-activated hard disk drive (HDD), satellite navigation, Lexus Enform and XM real-time traffic system.

Technosafety

Lexus’ VDIM stability system is an engineering masterpiece. It integrates and manages stability control, electronic controlled anti-lock brakes, electronic brake force distribution and engine torque via an electronically controlled throttle. The system anticipates the onset of a vehicle skid or slide while cornering and helps correct the situation in a way that is transparent to the driver.

A pre-collision system provides even better performance. Using a millimeter-wave radar and two cameras, this system can detect not just large metallic objects like cars, but for the first time, human pedestrians.

Another techno marvel is the Driver Monitor System. It uses a camera mounted on the steering column to monitor the orientation of the driver’s head. If it determines the driver is looking away from the road ahead at the same time as a collision threat is detected, the system will sound a warning chime and gently apply the brakes. To assist the driver in maneuvering around the obstacle, the system reprograms the steering ratio, increasing the intensity and quickness of the steering response.

While all of this is going on, passenger restraints are automatically cinched up, and the brake system is prepared for full force response.

Torque Arrives in a Rush

Lurking under the finely chiseled hood, the jewel-smooth V8 and hybrid wizardry is totally concealed by an engine bay cover. Press hard on the accelerator pedal, however, and the presence of the combo electric motor-gasoline engine is immediately known. Torque arrives in a rush, but the application to all four wheels seems almost graceful.

Drive a little too hard into a corner and there is a nicely controlled understeer. If you are an accomplished driver, the traction management system has an off position, allowing the tail to sneak out.

No traces of mechanical nastiness can be detected through either the steering wheel or the pedals. Shifts move from gear to gear so unobtrusively that the tach needle sometimes provides the only clue anything happened.

The car is superbly bolted together and is as quiet as a pharaoh’s tomb, whether driving 35 mph on city streets, 70 mph on interstates or 130 mph on a proving ground test track, as I did. Only the harshest of railroad crossings can disturb the Zen-like calmness.

But really, most owners will drive – or have someone drive – the 600h in a sensible manner and will be rewarded with what is one of the most serene motoring rides on the planet.

As for electric-only driving, a delicate foot on the pedal can move the big car for a short distance – around a mile or so – at speeds of close to 35 mph. It’s great for silent driving in the parking garage on the way to the top floor corner office.

Economics

The Lexus LS 600h L is an amazing showcase of Lexus’s creativity and technological sophistication, but it’s quite pricey. The base price of $112,750 makes it the most expensive hybrid in the world. In exchange for the price of one LS 600h L, you could buy four Prius Liftbacks, keep one for yourself, give three away as cute gifts and have nearly 10 Gs left over. Checking all of the option boxes adds $23,995, just five bucks short of another Prius Liftback.

There are other choices to consider for affluent eco-conscious buyers. BMW’s ActiveHybrid 7L is priced starting at $101,000 and equals the LS hybrid’s EPA combined fuel economy of 20 mpg. Another option is the Mercedes-Benz S400 Hybrid. While it doesn’t offer a stretched wheelbase, the V-6 hybrid powertrain has an EPA combined fuel economy rating of 21 mpg.

If all of the LS 600h L’s luxury, sophistication and high tech features are appealing, but the price isn’t, the gas powered LS 460 L with all-wheel drive is priced starting at $75,480. That’s $37,270 less than the hybrid version and the combined fuel economy of 18 mpg is just 2 mpg less.

The 2012 Lexus LS 600h plays in the ultra-luxury segment, the last rung on an automotive ladder that’s about more than mere transportation. It’s about image and comfort, the latest safety and convenience features, and performance that, at minimum, is unstressed. With its hybrid powertrain it offers a precious few more miles-per-gallon and also meets the Super Ultra Low Emission Vehicle II (SULEV II) certification, a distinction envied by competitors.

And then there’s the Lexus dealership experience, which is renowned for giving customers the kind of coddling they probably receive in all the other areas of life.

Prices are manufacturer suggested retail price (MSRP) at time of publication and do not include destination charges, taxes or licensing.

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Lexus today announced the Manufacturer’s Suggested Retail Price (MSRP) for the all-new 2013 GS 450h hybrid luxury sport sedan as well as for the 2013 RX450h.

Arriving in dealerships in May, the 2013 GS 450h will have a base MSRP of $58,950, unchanged from the model it replaces. The 2013 GS 450h delivers 338 total horsepower, while achieving 31 combined city/highway mpg.

The updated 2013 RX450h will arrive at dealerships this month with a starting MSRP of $45,910 for the FWD version and $47,310 for the AWD version.

The RX 450h’s Lexus Hybrid Drive features a 3.5-liter V6 Atkinson-cycle engine, electric motors, a small and light power-control unit and other fuel-saving innovations. It offers 295 total system horsepower. The Front Wheel Drive (FWD) model delivers EPA-estimated 32 mpg city and 28 mpg highway (30 mpg combined) fuel economy ratings, while the All-Wheel Drive (AWD) model earned EPA ratings of 30 mpg city, 28 mpg highway, 29 mpg combined.

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Lexus’ popular ES sedan series will offer a hybrid version for 2013.

Equipped with the same 2.5-liter four-cylinder Atkinson cycle engine as found in the Camry Hybrid, the 2013 ES 300h hybrid is expected to earn an EPA fuel economy rating of approximately 40 mpg combined city/highway. Lexus did not reveal the exact power found under the hood, but this hybrid combo provides 200 horsepower on the Camry version and is expected to provide the same in the ES.

This twin cam engine utilizes a sophisticated power management system, 12.5:1 compression ratio, and Variable Valve Timing with intelligence (VVT-i). The beltless motor is designed to improve fuel economy and durability.

The ES 300h hybrid offers the driver four modes: Normal, Sport, Eco and EV. EV mode allows short distance drives, at reduced speed, using only the power from the hybrid battery pack. Normal mode provides a blend of performance and efficiency that is suited to everyday driving, while Eco mode favors fuel economy. Sport mode increases powertrain responsiveness.

The whole Lexus ES range being revised, both the exterior and interior are updated, including the now familiar “face” Lexus has been grafting on all its revised models.

Greater rear seat legroom and knee room are the hallmark of the redesigned, more spacious cabin. Knee room is increased by 2.8 inches and legroom is increased by 4.1 inches.

The new ES features the next-generation Lexus Enform system. This system provides seamless connectivity with Bing search, iHeartRadio, MovieTickets.com, OpenTable, Pandora, Yelp and Facebook Places through compatible smart phones. One-year trial subscriptions to Lexus Enform with Safety Connect and the Application Suite are included.

Good news, despite its larger size, roomier interior and additional luxury appointments, the weight of the new ES is reduced by almost 90 pounds.

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The Lexus LF-LC Hybrid Concept was one of the undisputed stars of this year’s North American International Auto Show in Detroit, and now there’s talk of actually producing it.

At the time of its introduction back in January, Lexus was adamant that the car was purely a styling exercise, conceived to showcase the brand’s future design direction.

But now that the LF-LC has toured more auto shows and has received overwhelmingly positive response, perhaps there’s a greater chance of it making it all the way home to dealer showrooms.

Speaking with UK magazine Autocar, following this year’s Geneva Motor Show a few weeks ago, Lexus’ Product Planning Supremo Karl Schlicht, said that, “although a decision has not been taken [regarding the LF-LC], every top Toyota Motor Company manager is aware of the great reception it has received and now, we’re talking about how we can fit it into the production plan.”

That said, Schlicht emphasized that no formal decision had yet been taken and rated the LF-LC’s possibility of production as “up to a 50 percent chance from a zero percent one.”

When the concept was first unveiled, little information was released on the driveline, Lexus only saying that it was a front engine, rear-drive layout, incorporating Advanced Lexus Drive Hybrid technology.

If a production version does materialize, it’ll be interesting to see exactly what kind of hybrid drive system is chosen for the car; given industry lead times and advances in technology; though at this juncture a variation on the Hybrid Synergy Drive System used in the Lexus GS 450h and LS 600h is probably the most likely.

Autocar

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Student teams across the U.S. were honored today for their innovative environmental programs and rewarded with a total of $500,000 in scholarships and grants through the Lexus Eco Challenge.

Two grand prize winners earned $30,000 each, and eight first place winning teams were awarded $15,000 each.

“The Green Musketeers” from Jericho High School in Jericho, NY, and the “One-Towel Wonders” from SCAPA Bluegrass in Lexington, Ky., were the grand prize winners. “The Green Musketeers” created their own filtration system with the goal of patenting it, selling it, and using profits toward developing systems in third-world countries. The “One-Towel Wonders” demonstrated how a simple idea – using one towel per person, per week – would benefit the environment. For their efforts, each grand prize winner will receive $30,000, of which the school will receive a grant for $7,000, the teacher adviser will get a $3,000 grant, and the students will share $20,000 in scholarships.

The eight first place teams each won $15,000 with $3,000 for the school, $2,000 for the teacher advisor and $10,000 in scholarships for the students.

Amongst the winners were the “Carbonators” from Clark Magnet High School in La Crescenta, Calif. They used ArcGIS to analyze smog levels around the world and how that impacts health. “The Trophic” from Florida’s Miami Palmetto Senior High School focused on reducing carbon dioxide emissions through programs to benefit the land, air and water in their community.

The Lexus Eco Challenge also includes educational materials designed by Scholastic to encourage teachers to integrate creative lesson plans into their classrooms to help teach students about the environment. For each challenge, the web site has lesson plans and teacher instructions including questions to help guide a discussion about the current challenge topic, facts about the topic, and guidelines for a specific classroom project.

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