The 2004 Saab 9-5 is available as a 4-door, 5-seat wagon. Starting at $34,775, the 2004 Saab 9-5 Arc Sedan is powered by a 2.3L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 30-mpg on the highway. The top of the line 2004Saab9-5Aero Sport Wagon , priced at $ 40,570 , is powered by a 2.3L , 4 - cylinder engine mated to a manual transmission that returns an EPA estimated 20-mpg in the city and 29-mpg on the highway.