The 2012 Cadillac SRX is available as a 4-door, 5-seat sport utility. Starting at $35,985, the 2012 Cadillac SRX Base FWD is powered by a 3.6L , 6 -cylinder engine mated to an automatic transmission that returns an EPA estimated 17-mpg in the city and 24-mpg on the highway. The top of the line 2012CadillacSRXPremium AWD , priced at $ 49,585 , 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 23-mpg on the highway.