The 2020 Audi A6 40 TDI S-Line is a premium executive saloon that combines refined performance with sporty styling. Powered by a 2.0-liter turbocharged diesel engine producing 204 PS, it delivers smooth acceleration and impressive fuel efficiency. The S-Line trim adds aggressive exterior enhancements, sport suspension, and a high-quality interior featuring leather/Alcantara upholstery, a virtual cockpit, and dual touchscreen MMI infotainment.