The Cadillac STS comes with a 302-hp 3.6-liter V6 engine or a 320-hp 4.6-liter V8. Available with rear- or all-wheel drive it is controlled by a six-speed automatic transmission. Standard equipment includes dual-zone automatic climate control, OnStar telematics, Stabilitrak electronic stability control, and rear park assist. Optional features include automatic headlamp high-beam control, lane departure warning, high-intensity headlights, and adaptive cruise control. For 2009, the Cadillac STS is a carryover from 2008.