The 2008 Saab 9-5 is available as a 4-door, 5-seat sedan. Starting at $37,685, the 2008 Saab 9-5 2.3T Sedan is powered by a 2.3L , 4 -cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 26-mpg on the highway. The top of the line 2008Saab9-5Aero SportCombi , priced at $ 40,070 , is powered by a 2.3L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 26-mpg on the highway.