The 2003 Audi A4 is available as a 4-door, 5-seat sedan. Starting at $25,100, the 2003 Audi A4 T (M5) FrontTrak FrontTrak Sedan is powered by a 1.8L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 31-mpg on the highway. The top of the line 2003AudiA4T FrontTrak FrontTrak Cabriolet , priced at $ 34,950 , is powered by a 1.8L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated