The 2021 Audi A5 is available as a 4-door, 5-seat hatchback. Starting at $50,400, the 2021 Audi A5 quattro Cabriolet is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 23-mpg in the city and 31-mpg on the highway. The top of the line 2021 Audi A5 quattro Coupe, priced at $44,000, is powered by a 2.0L, 4-cylinder engine mated to an automatic transmission that returns an EPA estimated 24-mpg in the city and 31-mpg on the highway.