A powerful lineup of European performance cars — the 788HP Mercedes E63 S AMG, Dukedesign C63 S, 530HP MTM Audi RS5, and 700HP Milltek RS6 — unleashes full acceleration. From roaring V8 power to tuned ...

Audi offered sedan variants of the RS6 in the first two generations (C5 and C6), but more recent models (C7 and C8) were only ...