Lexus debuted the sixth-generation ES sedan in Beijing on Wednesday, but with the new luxury sedan comes an even more efficient hybrid model.

The 2019 Lexus ES 300h ushers in a fourth-generation hybrid system. All of the advances will return a 44 mpg combined fuel economy rating, per Lexus estimates. It’s important to note these are not federal fuel economy figures. They are, however, 10 percent higher than the previous ES Hybrid, or about 4 mpg more.

Nevertheless, the new hybrid system found in the 2019 ES 300h combines a 2.5-liter four-cylinder Atkinson Cycle engine with a lighter and more power-dense electric motor and self-charging hybrid system. Together, they make 215 horsepower, up from 200 hp previously.

Lexus was quick to highlight the engine’s fast-burn technology, which helps make the internal-combustion engine more thermally efficient. In the process, the engine also makes more power without increased emissions. Engineers were able to employ numerous tricks to achieve greater thermal efficiency. The 2.5-liter engine boasts variable capacity oil pump, multi-hole injectors, a variable cooling system, and more all strive to sip fuel.

SEE ALSO: 2018 Toyota Camry Hybrid Review

Other improvements include an upgraded hybrid system control computer to help mimic the feeling of power delivery from a standard gasoline engine, and engineers mounted the smaller battery underneath the rear seats; trunk space no longer suffers.

The car as a whole takes on Lexus’ most recent design ethos with sharp creases and a somewhat toned-down spindle grille. It’s also longer and wider than the outgoing model, 2.6 inches, 1.8 inches, to be exact. Underneath, the ES shares a platform with the current Toyota Camry and Avalon.

Inside the hybrid sedan, all ES models gain a new infotainment screen,  Lexus’ 1-to-1 trackpad controller, and Apple CarPlay along with Alexa voice recognition. No, there still isn’t Android Auto support.

Both the regular ES 350 with the standard gasoline engine and the ES 300h will reach dealerships this coming September. Pricing will be announced at a later date.