The 2007 Saturn Relay is available as a 4-door, 7-seat passenger van. Starting at $21,570, the 2007 Saturn Relay 1 is powered by a 3.9L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway. The top of the line 2007 Saturn Relay 3, priced at $27,860, is powered by a 3.9L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 18-mpg in the city and 25-mpg on the highway.