Available in two trims the 2010 CTS comes standard with either 17- or 18-inch alloy wheels. 19-inch polished alloy wheels are optional. The standard engine is a four-cam, 3.0-liter V6 with direct injection and variable valve-timing generating 270 horsepower. A direct injected 3.6-liter V6, with 304 horsepower is also available. Transmission choices include a six-speed automatic or six-speed manual, and a variable-torque full-time all-wheel-drive system can be added to either engine. Feature highlights include a standard Bose audio system with XM Satellite radio, eight speakers and auxiliary input jack. A power UltraView double-sized sunroof and an upgraded radio with DVD-Audio, Bose 5.1 Cabin Surround Sound, 40 gB Hard Drive, and a USB port are available. For 2010, the CTS Sport Wagon is new, the CTS sedan carries over from 2009.