The Audi RS6 (C7) was the top of the range performance variant for the Audi A6, and was introduced in 2013. The third iteration of the RS6 was based on the C7 Audi A6 and was offered as a sedan or 'Avant' station wagon. The RS6 (C7) was powered by a 4.0L twin turbo engine sending power to all four wheels. Production of the RS6 (C7) lasted until 2018. This generation of the Audi RS6 was not sold in the North American market.