Most common 2004 Cadillac STS problems
Share of the 7 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Cadillac STS complaints by model year
Best STS years: 2002, 1999, 2003. Years to avoid: 2006, 2005, 2008, 2007. Compare all years →
Frequently asked questions
Is the 2004 Cadillac STS a good car?
Based on 7 owner complaints filed with NHTSA, the 2004 STS rates average: 27% fewer complaints than a typical year of the STS at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2004 Cadillac STS?
The fuel & propulsion system — 2 complaints, 29% of all complaints for this model year, most often about delivery › fuel pump. Next are the lights (1) and air bags (1).
How many recalls does the 2004 Cadillac STS have?
NHTSA lists no recalls for the 2004 Cadillac STS. You can still confirm with your VIN using our VIN recall check.
What are the best and worst years of the Cadillac STS?
The best years by complaints, compared at the same age, are 2002, 1999 and 2003. Years to avoid or approach with caution: 2006, 2005, 2008 and 2007. See the full Cadillac STS years comparison.
At what mileage do 2004 Cadillac STS problems happen?
The median mileage reported in complaints is about 10,000 miles; 75% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.