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The 2011 STS is a 4-door, 5-passenger luxury sedan, available in 3 trims, ranging from the V6 Luxury Sport to the V6 Premium Package.
Upon introduction, both trims are equipped with a standard 3.6-liter, V6, 302-horsepower engine that achieves 18-mpg in the city and 27-mpg on the highway. A 6-speed automatic transmission with overdrive is standard.
The 2011 STS is a carryover from 2010.