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Clean Diesels Poised for Continued Growth in U.S.

Published October 26, 2011

Diesel TDI

Not so long ago the U.S. vehicle market was all but diesel-free, thanks in part to California's strict air standards that prohibit high nitrogen oxide emitters. But with the debut of the Volkswagen Jetta TDI in 2008 and subsequent releases from Mercedes, BMW and Audi, diesel's fortunes here are beginning to change. Far from the bulky, smog-billowing V6s of the 1970s and 1980s, the new generation of clean diesel vehicles are smaller, turbocharged, fuel efficient, and most importantly, their smog emissions are sharply lower—meaning that they are now legal in all 50 states.

At 42 mpg highway, the 2012 Jetta TDI is more powerful and offers a 9-mpg fuel economy improvement over the standard 4-cylinder Jetta S, making it a competing consideration for many hybrid shoppers. The success of the Jetta has helped to trigger a slow but steady increase in the number of oil-burning cars sold in the United States. So far this year, diesel sales are up more than 30 percent over 2010—when they were up 40 percent over 2009 levels. According to John Breneman, executive director of the U.S. Coalition for Advanced Diesel Cars, sales of clean diesels will only continue to grow as the Corporate Average Fuel Economy standard in the United States increases toward 54.5 mpg in 2025.

“Emission regulations are now about the same in Europe and the U.S., even California, so it makes it economically feasible for auto makers to develop one product for all those markets,” Breneman told Ward's Auto last week.

This year, Chevy announced that it will market a diesel version of its popular Cruze compact for 2013 that is expected to achieve fuel economy in the 50-mpg range. In the next two years, Audi says it will offer TDI versions of its A6, A8 and Q5 models. The carmaker already sells its A3 and Q7 here.

So far, the new diesel market seems to be constrained less by consumer demand than the willingness of carmakers to offer the technology. “When given a choice between a diesel- or gas-powered Jetta, 33% of motorists opt for the higher-mileage diesel. But when the supply of diesels is gone, it takes at least six to eight more weeks for the boat to arrive with a fresh supply,” said Breneman. “Ford, Toyota or Honda haven’t got a diesel for the U.S. yet, but get ready for 2013-2014. That’s when we’re going to see a lot more diesels.”


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Joan 123

29 weeks ago

I'm waiting for a diesel hybrid! I know this makes for a more expensive car, but I bet that they could get mileage in the 60's or higher, without sacrificing size or safety!

Bonaire

29 weeks ago

Chevy Volt + Diesel range extender, please.

Jim Burke

29 weeks ago

I think it is funny that they refer to them as "oil burners". Lets all remember that "gasoline" is deriverd from the same oil, and it is more refined. In the clean diesel they are just doing some refining in the engine.

Oh, and us Americans are getting the short end of diesel technology. That Cruze diesel has been in production for awhle in Australia, and I know there is a 60mpg Ford Focus or Festiva in GB. The automakers won't bring them here because the American car buyer won't buy them. They only understand dollars and sense, buy the enough of the foriegn cars and they will offer them.

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Senior Member

29 weeks ago

Those VW's are quietly great MPG performers with good torque (the TDI's). We definitely will see plug-in diesels, it is just a matter of time.

MrEnergyCzar

Capt. Concernicus

29 weeks ago

So the TDi gets 9mpg more than the non diesel Jetta on the highway?

That's great! Oh by the way. Don't forget to add an extra 10% (or more depending on where you live) in weekly fuel costs. Also, the base TDi is $6,000 more than the base Jetta. According to VW's website.

So for $6,000 more, plus 10% increase in fuel costs you get an extra 9 mpg highway. Sounds reasonable to me.

Dom

29 weeks ago

Capt. Concernicus - the Base TDI is any but base unfortunately. So yes, if you want the absolutely cheapest Jetta, the TDI may not make sense. But compare it to a similarly equipped gas Jetta and the TDI is usually around maybe $2,000 more... how many people (used to?) pay that much for the privilege of a V6? Go with the TDI and you get power and economy...

I'm excited that the Cruze diesel is really coming! VW's trail blazing may have finally paid off. I've been driving an 03 Golf TDI (manual) for five years now... it's a great car!

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Member

29 weeks ago

Not sure where the 9 mpg improvement over the base gasoline version comes from. In the automatic transmission versions, the highway mileage is more like 13 mpg greater (42 mpg vs 29 mpg).

Even if you take the 9 mpg improvement, 42/33 = 27.3% increase in fuel mileage, which is greater than the 10% increase in fuel cost. According to EPA 5-cycle mileage data, in a mix of highway/city driving, the difference is more like 40%, again >>10%. In the new Passat (and the Audi A3), the difference is almost 50%.

The price differential for the vehicles themselves is more like $2500 if you include all of the standard equipment that is otherwise optional on the base Jetta. Based on historical data, that difference is more or less maintained at trade in.

dave hebert

29 weeks ago

Doesn't know what he is talking about. The TDI, esp the wagon is a much more refined vehicle than the base Jetta. Its esily worth the differnce. The interiors way nicer, it has more features and the new newer non -TDI's have a lessor suspension. The TDi also offers a better power profile than the gas engine. Esily woth the $6000 difference you mention

simon@syd

29 weeks ago

Does anyone know what happens with emissions in these vehicles, over the lifespan of the car? We might be depending on motorists to keep these cars well serviced as they get old, to preserve us from death by cancer. I think a hybrid, by using electricity for some propulsion, will be better than pure petrol even when unserviced. An unserviced petrol car will be bad, and an unserviced diesel... Have you ever been stuck behind one? Can hardly see for the particulates!

There is a diesel hybrid coming, and it sounds exciting: its a diesel plugin hybrid with amazing economy from Volvo.

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Member

29 weeks ago

@ simon -

USEPA conducted a study in 2008 ("Analysis of Particulate Matter Emissions from Light-Duty Gasoline Vehicles in Kansas City") which showed that most of the older petrol cars (15+ years) had PM emissions that exceeded 50 mg/mile (0.05 g/mile). Some even exceeded 250 mg/mile (0.25 g/mile). For comparison, the CARB certified emissions (@100,000 miles) of 2002 VW Jetta TDI was 0.05 g/mile (50 mg/mile). So even if the emission control for PM (DPF) becomes non-functional, the PM emissions likely won't be any worse than older petrol cars. Granted, older hybrids probably aren't as bad as straight petrol vehicles (EPA didn't specifically identify the vehicles it tested), but any vehicle that isn't maintained will be an issue as far as emissions are concerned.

Furthermore, studies in the U.S. have shown that PM from petrol vehicles are responsible for 3 times as much of the ambient PM mass than diesel. These studies predated widespread use of DPF on diesel vehicles, so the relative contributions will likely widen even farther as all new diesel vehicles now have DPF as OEM equipment.

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29 weeks ago

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29 weeks ago

Dave B

27 weeks ago

I've had diesels since 1979. Oil companies are aware of fact that if all vehicles were diesel we would import no oil and competitive costs of fuel would be driven down, down, down!!

Arianna Yates

25 weeks ago

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Alan E

25 weeks ago

I have always owned various V8 engine BMWs, VWs and a Land Rover for the past 15 years. I recently purchased a VW Jetta Wagon TDI. I am so impressed that I keep looking for other TDI options by other car makers. My average mpg is 36. In comparison my V8 engine cars always averaged between 14-17 mpg. What I did not expect is how much fun the high torque brings to the driving experience. I only hope that more Americans begin to learn and love turbo diesel engines. Maybe then we can have true choices like Europeans have had for years. Once you own one, it has hard to go back to gas engines. My other car is a BMW 650i convertible. I have more fun driving the Jetta TDI with the Dual Clutch transmission?!

Bill Johnson

24 weeks ago

I'm really glad to see VW leading the charge bringing diesel engines to the US market. Their most recent line up is looking pretty darn good with all the diesel varieties.

It's a shame other manufacturers are so slow to follow suit. I can only hope Chevy does indeed come out with the diesel Cruze.

As a diesel mechanic, I may be a bit biased, but I really think they have a lot to offer. I do a lot of highway driving, so hybrids simply don't give me as much benefit. For about the same amount (or less in many cases), I can upgrade to a diesel option instead and enjoy much better highway mileage.

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