This iconic S4 gives sport sedan drivers plenty of everyday performance, along with the luxury and tech that Audi is known for. It's the sportiest version of Audi's best-selling sedan model ...

The S4 is a sport-tuned version of Audi's well-known A4 compact luxury sedan. Part of the portfolio of Audi's bestselling sedan model, the current B9-generation S4 made its debut in 2017.