The debut of the BMW 7-series ActiveHybrid at the 2008 Paris auto show was just a preview of what the German automaker's luxury sedan hybrid will offer, but the real thing might be unveiled soon.
According to L'Automobile, the BMW 750Hi, as it will be called, will be revealed at the 2009 Frankfurt auto show this September. The 750Hi will battle it out with the newly introduced Mercedes-Benz S400 Hybrid and the Lexus LS600h, which has enjoyed a few-year head start in this arena over its German competitors.
The 750Hi will be equipped with the 4.4-liter twin-turbo V-8 from the 750i, which makes 400 horsepower in the non-hybrid. The mild hybrid will add an electric motor that will add about 20 horsepower, and improve fuel efficiency by as much as 15 percent. The ActiveHybrid concept was also equipped with other EfficientDynamics upgrades, such as regenerative braking and start/stop technology.
BMW could match that output with eight-speed automatic transmission that debuted at the Shanghai auto show in 760i. We'll have to wait until September to confirm these details - if indeed BMW brings its hybrid to the show.