Major changes included: The fifth generation S4 brought forced induction back into the equation, dropping the 4.2-liter V8 of the previous model in favor of a supercharged 3.0-liter V6. Now making slightly less power (329 horsepower) but more torque (325 lb-ft.), the fifth generation S4 is more efficient thanks to its supercharger system and direct injection and it dodges the gas guzzler tax that plagued the previous V8 models. Audi?s Quattro all-wheel drive comes standard along with a 6-speed manual or optional 7-speed twin-clutch automated manual transmission. A set of 18-inch alloy wheels come standard but 19-inch S-Line alloy wheels are also available. Other key features include an electronic stability program, tire pressure monitoring system and Bluetooth phone interface.
