The S4 is a high-performance variant that shares the same three bodies, but is powered by a 4.2-liter V8 rated at 340 horsepower. The S4 is available as a sedan with six-speed manual ($45,650) or six-speed Tiptronic ($46,800) transmission; Avant with six-speed manual ($46,650) or six-speed Tiptronic ($47,800); or as Cabriolet with the same transmission choices.
Options include a 215-watt Bose sound system for front-drive sedans ($900), the same system with a choice of Sirius or XM satellite radio for Quattro models ($1,000), a navigation system for 3.0 and S4 ($1,350), and OnStar ($750). Next Page