BMW is rounding out its Detroit Auto Show premier lineup with the North American debut of the 535i Gran Turismo. The 550i GT that's powered by the 4.4-liter twin turbo V8 is already on sale in the U.S., but we won't get our shot at the six cylinder model until the spring of 2010. Like the recently-announced 5 Series sedan, the Gran Turismo is getting a new version of the 3.0-liter inline six cylinder turbo.
The current 535i and 335i both use a version of the six with two turbochargers. The version in the GT produces the same 300 hp and 300 pound-feet of torque with a single twin-scroll turbocharger. The engine also incorporates BMW's Valvetronic valve control system to reduce fuel consumption by eliminating the throttle and reducing pumping losses. The six will be mated up with the same new ZF eight-speed automatic used in the 550i and the ActiveHybrid 7. Want more details? Click past the break for the press release.