There's a chance that the Audi R8 ... twin-charged five-cylinder, "but it has been talked about." That means such a vehicle is likely years away, if ever. In the meantime, a diesel version of the ...

While the original show car had a twin-turbo 5.0-liter V10 engine ... more torque than the V10 thanks to forced induction. Audi R8 V12 TDI Concept Audi R8 E-Tron What's next for the R8?

The Turbo is four-wheel drive, of course, and as with the other two cars it has a twin-clutch gearbox. The Audi R8 is one of the last remaining naturally aspirated supercars, which is reason ...