The 2017 Audi A4 is available as a 4-door, 5-seat sedan. Starting at $37,300, the 2017 Audi A4 FWD Sedan w/o Sunroof is powered by a 2.0L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 25-mpg in the city and 33-mpg on the highway. The top of the line 2017AudiA4Season of Audi (S tronic) quattro Sedan , priced at $ 42,350 , 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.