The S4 is a well-balanced sports sedan, with sophisticated style and tremendous performance. Based on the fantastic Audi A4, this version satisfies enthusiasts with increased power, standard all-wheel drive, and a sport-tuned suspension. Like the standard A4 sedan, it is graced with an exquisitely crafted interior and a sleek exterior that’s more classy than flashy. The S4 is enjoyable to drive rather than overtly exciting. The S4 has a 354-hp turbocharged 3.0-liter V-6 that syncs with an eight-speed automatic transmission and all-wheel drive. The S4 is most exciting in Dynamic mode with the transmission set to S. This quickened throttle responses and sharpened the automatic’s reactions. Set to Auto or Comfort mode, the Audi was respectfully quiet and composed. The S4’s chassis is its greatest strength. Its tautly controlled body motions and compliant damping made it equal parts sport and luxury sedan. The S4 is very precise and easy to control; its accurate steering, excellent cornering stability, and tenacious grip on the tarmac boosted our confidence to torpedo on-ramps—but it also cruised calmly around town. Audi is a benchmark of interior quality, and the S4 is further evidence. The S4 cabin is stuffed with marvelous materials and standard features such as diamond-stitched sports seats with massage features. Along with impeccable fit and finish, the interior is racy and luxurious. The standard brushed-aluminum trim traces the dash, doors, and center console. Likewise, the standard leather seats have intricate stitching and suede-like inserts. This S4 is also fitted with the digital gauge cluster that Audi calls the Virtual Cockpit. Apple Car Play and Android auto available when you plug in your phone as well. EZ pass transponder #6347717