Is RS6 or RS7 faster?
Both the RS6 and RS7 offer remarkable parity in terms of performance. Their identical powerplants and performance figures mean that you can expect exhilarating acceleration and superb handling in either model, regardless of your preference for a wagon or sedan. The RS 6 Avant performance has a potent, 4. L twin-turbo V8 engine with 621 HP propelling it from 0 to 100 km/h in 3.