2011 Cadillac STS

The 2011 Cadillac STS is a 4-door, 5-seat Sedan, available in 5 trims, ranging from the Luxury Sport RWD to the Performance AWD. Upon introduction, the $47,280 Luxury Sport RWD is equipped with a standard 3.6L, 6-cylinder, engine that achieves 18-mpg in the city and 27-mpg on the highway. an Automatic transmission is standard. The $52,720 Performance AWD is equipped with a standard 3.6L, 6-cylinder, engine that achieves 18-mpg in the city and 27-mpg on the highway. an Automatic transmission is standard.