The 2006 Audi S4, part of the B7 generation, is a luxury performance sedan that offers surprising power with composed handling. It comes fitted with a 4.2-liter V8 engine that outputs a healthy 340 horsepower managed by either a 6-speed manual or a 6-speed automatic transmission. Its quattro all-wheel drive system delivers power uniformly and smoothly to all wheels. It hits the perfect balance between refined comfort and sporty aggression with a well-appointed interior featuring fine leather upholstery, automatic climate control, and heated front seats. The Audi Symphonic stereo with a 6-disc CD changer provides quality audio experience. Although lacking in some modern tech features, its performance and luxury feel speak for itself. It also comes with anti-lock brakes and front-seat side airbags adding to the safety features.