The 2018 Audi S6 is a culmination of luxury, performance, and technology. Part of the fourth generation debuted in 2012, this midsize luxury sedan boasts an incredible 450-hp 4.0L turbocharged V8 engine mated to an eight-speed automatic transmission. Quattro all-wheel drive comes standard to complete this powerhouse trio. The S6 offers two primary trims: Premium Plus and Prestige, both lavishly equipped. Standard features include a sunroof, parking sensors, a rearview camera, Audi's MMI infotainment system with an 8-inch display, Apple CarPlay, and Android Auto. On the safety front, it includes advanced tech like blind-spot monitoring and forward collision mitigation. The 2018 model year brings few changes, having newly standard features like 20-inch wheels and red brake calipers.