A4, S4, A5, S5, RS4, RS5, Q5, SQ5, (B8)
Driving the Audi S4 around docilely throughout the day-to-day commute, it’s easy to forget that the car’s 3.0-liter V6 is supercharged. You have to listen with the audible tenacity of a recording engineer in order to say you hear any sort of whine from the Eaton supercharger unit underneath the...