However, in the late 2000s, Audi toyed with the idea of putting a twin-turbo V12 engine in the Audi R8. The proof of concept was a model called the Audi R8 TDI Le Mans, and it envisioned a crazy ...

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 ...