Nobody is going to argue that the Audi R8 diesel will be saving the earth. It won't. But, like the Tesla Roadster, a diesel version of the awe-inspiring Audi supercar could go a long way towards convincing consumers that diesels don't have to be smelly, dirty, noisy and slow. Chances are that the Audi's V12 diesel won't be making it behind the passenger compartment of the R8, but rumor has it that a 4.2 liter TDI V8 might. Yes, please ... and why not fill it up with biodiesel while we're at it.
var digg_url = 'http://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 the 2008 Detroit Auto Show. First the TT-S photos were leaked to Spanish website Motorpasion, and today we see video of the R8 V12 TDI concept has been posted on a Russian site. The Detroit-bound car is said to make 500 horsepower and 737 lb-ft (1000 Nm) of torque while boasting fuel economy of over 23 US mpg (10 liters per 100 km)