Autoweek and Fourtitude were able to enjoy some seat time in the Audi R8 V12 TDI LeMans concept before its official unveiling in Geneva last week. Their drive was short (about an hour with a 50 ...

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 ...

And it used almost as much fuel, with the V12 ... of Audi's passenger car look, with the updated A4 and A6 both picking up on the horizontal bar between the rear lights and the huge grille framed by ...