The 2007 Cadillac SRX is available as a 4-door, 5-seat sport utility. Starting at $37,225, the 2007 Cadillac SRX V6 4x2 is powered by a 3.6L, 6-cylinder engine mated to an automatic transmission that returns an EPA estimated 16-mpg in the city and 24-mpg on the highway. The top of the line 2007 Cadillac SRX V8 AWD, priced at $45,330, is powered by a 4.6L, 8-cylinder engine mated to an automatic transmission that returns an EPA estimated 15-mpg in the city and 22-mpg on the highway.