The 2020 Audi Q3 is available as a 4-door, 5-seat sport utility. Starting at $34,700, the 2020 Audi Q3 45 Premium is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway. The top of the line 2020AudiQ3S line , priced at $ 36,000 , is powered by a 2.0L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 19-mpg in the city and 27-mpg on the highway.