The 2006 Saturn Ion is available as a 4-door, 5-seat sedan. Starting at $11,925, the 2006 Saturn Ion 2 (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 2006 Saturn Ion Red Line (M5) Coupe, priced at $19,425, is powered by a 2.0L, 4-cylinder engine mated to a manual transmission that returns an EPA estimated 22-mpg in the city and 30-mpg on the highway.