For 2011, the STS is no longer available with the Northstar V8 engine, leaving the 3.6-liter V6 as the sole power plant. All 2011 STS models are now covered by Cadillac's Premium Care Maintenance program.
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2008 Cadillac STS V6 receives a new 302-horsepower, 3.6-liter engine. New options for the STS V6 include a performance package, HID headlights and the Head-Up Display (HUD). Refreshed exterior styling is enhanced by some new technological features such as Lane Departure Warning and Side Blind Zone Alert.