Word around town is that the same engine that powers the 580-hp 5.2L twin-turbo V10 in the recently announced Audi RS6 Avant could also find its way to the back hatch of the Audi R8. We first ...

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 ...