the monster diesel will find its way into the next A8 sedan, due in 2010. Audi's gonna do it. According to a German report, they're putting a race-derived 6.0-liter V12 TDI in the Q7 SUV for 2008.

var digg_url = 'https://digg.com/autos/500hp_23_mpg_Audi_R8_V12_TDI_concept_leaked_before_Detroit'; Audi's having a spot of trouble keeping a lid on things ahead of ...

Audi has done many crazy things in the past, but putting a twin-turbocharged V12 diesel engine in the Audi R8 might take the cake.