The BMW 5-Series ActiveHybrid will make its debut at this December’s Tokyo Auto Show, featuring BMW’s familiar twin-turbo I6 engine and an electric motor that will produce a total output of 340 horsepower. Backed by an 8-speed automatic, the car will be able to operate in pure electric mode up to 37 mph.
The ActiveHybrid’s 55 horsepower electric motor will be powered by a trunk mounted lithium-ion battery pack, and also allow the driver to coast with the gasoline engine shut off. A boost function will also enable rapid acceleration, though BMW did not elaborate on its exact nature. An energy management system is said to work in concert with the car’s GPS unit to adjust for road conditions.
BMW also markets hybrid versions of the 7-series and X6. A 3-Series Hybrid will bow in 2012, while the i3 and i8 electric cars will debut in 2013 and 2014 respectively.