Owners describe the D5 S8 as wildly fast — effectively the RS8 Audi never built — and lament that it flies under the radar next to the RS6/RS7. The shared EA825 V8 (also in the Cayenne Turbo, Urus, and Bentayga) underpins both the performance and the 'so much car for the money' value case.
The 'RS8 that never was' — stupid fast and underrated
Audi S8 (D5) · ownership-experience