the 2008 CTS comes standard with 17-inch seven-spoke alloy wheels, with 18-inch wheels available as an option. Feature highlights include a standard Bose audio system with eight speakers and both USB and auxiliary MP3-player jacks.
The 2008 STS is a 4-door, 5-passenger luxury sedan, or luxury sports sedan, available in 6 trims, ranging from the V6 to the V8 Premium Luxury Performance.