The 2020 Audi A6 allroad is available as a 4-door, 5-seat wagon. Starting at $65,900, the 2020 Audi A6 allroad 3.0T Premium Plus is powered by a 3.0L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 20-mpg in the city and 26-mpg on the highway.