The convertible version of the A4, absent since it was redesigned in 2005, returns to the lineup in both regular A4 and high-performance S4 versions. And if the S4's 340-hp V-8 isn't enough, Audi is re-introducing the RS 4 sedan with a 420-hp V-8 and modified, high-performance suspension.

Few cars have done more for an automaker's reputation than the A4 has for Audi. First introduced in 1995, the A4 was remarkable for its small but powerful 1.8-liter turbocharged engine, optional all-wheel drive, and affordable price. The A4 was a sales success for Audi, and it put the brand back on the shopping lists of buyers looking for a serious performance marque.