Mercedes previews GL 420 Bluetec

Mercedes-Benz will use the upcoming Detroit auto show to reveal its Vision GL 420 Bluetec concept -- proof, Mercedes says, that even large, high-performance SUVs can offer economical fuel consumption and extremely low emissions. With a powerful V8 diesel engine that develops 290 hp and 515 lb ft of torque, the anticipated fuel economy is roughly 24 mpg.

Visually, the truck is distinguished by a larger grille, 21-inch wheels, winder fender flares, and custom front and rear aprons. It's not known if Mercedes plans to use the design elements in a production GL-Class Bluetec vehicle, or another GL variant. Full image after the jump...