Understated almost to the point of anonymity, the S4 is the mid-level performance version of the Audi A4 saloon. Swapping between twin-turbocharged, supercharged V6 and even a naturally aspirated ...

Showing the 2018 Audi S4 3.0 TFSI Prestige quattro AWD $1,400 Starting MSRP $1,400 Starting MSRP $2,580 Starting MSRP $1,250 Starting MSRP $500 ...