Overall Initial Quality:

Overall Performance and Design:

Vehicle Dependability:

Like its smaller sibling the CTS, the STS sedan receives only one upgrade for 2007 since it will be redesigned for the 2008 model year. The change is a switch to the fully electronic 6-speed automatic transmission on the Northstar V-8-powered model. The 2008 model will receive a refreshening, including a bigger standard engine and a host of other design and performance upgrades.








