The 2004 Saturn Ion is available as a 4-door, 5-seat sedan. Starting at $10,430, the 2004 Saturn Ion 1 (M5) Sedan is powered by a 2.2L , 4 -cylinder engine mated to a manual transmission that returns an EPA estimated 26-mpg in the city and 35-mpg on the highway. The top of the line 2004SaturnIon3 (VTi) Coupe , priced at $ 17,250 , is powered by a 2.2L , 4 - cylinder engine mated to an automatic transmission that returns an EPA estimated 25-mpg in the city and 32-mpg on the highway.