MPG City: 18 - 25 ; Highway: 27 - 33
The midsize Audi A6 received a full redesign in 2012 and is available with either a turbocharged four-cylinder or supercharged six-cylinder engine. Both team up with an eight-speed automatic transmission. The high-performance Audi S6 model, which makes 420 horsepower from a twin-turbocharged V-8, is also available and is covered separately on Cars.com. The A6's competitors include the BMW 5 Series, Cadillac CTS, Jaguar XF and Mercedes-Benz C-Class, among others.