The 2005 Audi A4 is available as a 4-door, 5-seat sedan. Starting at $27,350, the 2005 Audi A4 2.0T (New) (M6) FrontTrak FrontTrak Sedan is powered by a 2.0L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 23-mpg in the city and 34-mpg on the highway. The top of the line 2005AudiA43.0 (A5) quattro Sedan , priced at $ 34,790 , is powered by a 3.0L , 6 - cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 26-mpg on the highway.