The 2018 Audi S4 is the performance variant of the A4 sedan, and it comes standard with all-wheel drive. S4 Premium Plus: The base Premium Plus trim comes standard with 18-inch alloy wheels ...

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.