The Audi S4 (B9) delivers serious performance, luxury, and everyday usability—but is it so good that you don’t even need an ...
It’s difficult to believe that the Audi S4 and Mercedes-AMG C43 can ... more specifically the exhaust. As you switch from Normal to Sport then Sport+, the engine goes from making a crisp but ...
the S4 is the mid-level performance version of the Audi A4 saloon. Swapping between twin-turbocharged, supercharged V6 and even a naturally aspirated V8 engine in times gone by, the B9 S4 returned ...