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 2012 Audi S4 exists to satisfy power-hungry customers who find the pedestrian A4 - and its 2.0-liter turbo four - inadequate. Instead, the S4 is packed with a supercharged 3.0-liter V-6-engine ...