Model Year Comparison
- Worst Model Year
- Worst Category
- electrical Problems
We don't have a lot of complaints on file for the Cadillac STS — feel free to add yours here. Probably because it's so old, no one bothers to post complaints anymore.
Although the 2006 Cadillac STS has the most overall complaints, we rate the 2005 model year as worse because of other possible factors such as higher repair cost or more problems at lower mileage. The most-reported problem is also with the 2006 Cadillac STS for battery drains after car is shut off.