This 2011 Audi S4, with 122,850 miles, features a clean, accident-free Carfax report and warm-climate Southern ownership. It boasts significant performance modifications including GIAC Stage 1 ECU and Stage 2 transmission tunes, an upgraded supercharger heat exchanger, and an aftermarket cold air intake, boosting output to 404 horsepower. Notable factory equipment includes the Prestige and Sports Rear Differential packages, sport suspension, and Recaro heated front seats, though it does have some cosmetic imperfections and minor electrical issues like an intermittently non-functional backup camera.