DecodedCars2010 Cadillac STS
Trims, performance, features, fuel economy, safety and known problems — with the pros and cons against similar 2010 models.
- Class
- Midsize Cars
- Engines
- 3.6L 6-cyl, 4.6L 8-cyl
- Drivetrain
- Rear-Wheel Drive, All-Wheel Drive
- Fuel
- Regular Gasoline
- MPG (best)
- 21 combined · 18 city / 27 hwy
- Length
- –
- Curb weight
- –
- NHTSA rating
- Not rated
- Recalls
- 0 campaigns
Pros & cons
What's good
- AWD / 4WD available
- No recalls so far
Watch out for
No weak spots against similar models in the data.
Calculated from EPA, NHTSA and vPIC data against 13 similar 2010 models — not a review. How we calculate this →
Overview
The 2010 Cadillac STS is a midsize car offered with 2 engines (3.6L 6-cyl and 4.6L 8-cyl) and rear-wheel drive and all-wheel drive.
EPA rates its most efficient version at 21 MPG combined (18 city / 27 highway), 5% worse than the 2010 midsize car average of 22.2 MPG, for an estimated $3,200 a year in fuel.
It has 0 recall campaigns on file and owners have filed 2 complaints with NHTSA since 2015, most often about the structure.
What changed for 2010
No changes to engines, powertrains, drivetrains, size, EPA ratings or NHTSA crash rating compared with the 2009 STS — a carry-over year in the data.
Compared with 2009; trim, feature and price changes aren't covered. See the 2009 STS →
Engines, MPG & running costs
| Version | Engine | Transmission | Drive | City / Hwy / Comb | vs. class | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|---|---|
| STS | 3.6L 6-cyl | Automatic (S6) | Rear-Wheel Drive | 18 / 27 / 21 | -5% | $3,200 | 423 |
| STS AWD | 3.6L 6-cyl | Automatic (S6) | All-Wheel Drive | 18 / 27 / 21 | -5% | $3,200 | 423 |
| STS | 4.6L 8-cyl | Automatic (S6) | Rear-Wheel Drive | 15 / 24 / 18 | -19% | $3,700 | 494 |
| STS AWD | 4.6L 8-cyl | Automatic (S6) | All-Wheel Drive | 15 / 22 / 17 | -23% | $3,950 | 523 |
EPA estimates; "vs. class" is combined MPG against the 2010 EPA class average. How we calculate this →
Safety ratings & technology
NHTSA has not published 5-Star ratings for the 2010 Cadillac STS under the current (2011+) test program.
Similar 2010 midsize cars
| Model | Best MPG / range | NHTSA overall | Recalls |
|---|---|---|---|
| 2010 Cadillac STS (this car) | 21 MPG | Not rated | 0 |
| 2010 BMW 5 Series | 22 MPG | Not rated | 7 |
| 2010 Mercedes-Benz E-Class | 21 MPG | Not rated | 0 |
| 2010 Audi A6 | 22 MPG | Not rated | 3 |
| 2010 Lexus LS | 21 MPG | Not rated | 2 |
| 2010 Lexus ES | 22 MPG | Not rated | 4 |
| 2010 Audi A8 | 18 MPG | Not rated | 1 |
Recalls (0)
No vehicle recalls on file with NHTSA for the 2010 Cadillac STS.
Check your VIN for open recalls at NHTSA ↗Not every 2010 Cadillac STS is affected — only a VIN check confirms your car.
Owner-reported problems
Unverified owner reports; best-sellers collect more.
Used 2010 Cadillac STS buyer's checklist
- Run the VIN at nhtsa.gov/recalls. No recalls on file, but check anyway.
- Structure › Body — 1 owner reports. Open and close every door, the hood and tailgate; look for rust or misaligned panels.
- Electrical System — 1 owner reports. Test every window, lock, light, screen and USB port; check the battery age.
- Fuel/Propulsion System — 1 owner reports. Smell for fuel around the car and in the cabin, check that it starts easily when warm, and look at the oil dipstick for a fuel smell or rising level.
- Mileage to watch. Owners typically reported problems around 53,007 miles; ask what was repaired near that point.
- Before you pay: service records, a history report and an independent inspection.
Generated by DecodedCars from NHTSA recalls and owner complaints for the 2010 Cadillac STS. Not a substitute for a professional inspection.
Other STS years
Compare all years →Sources: EPA, NHTSA, Transport Canada, Wikimedia Commons. Not affiliated with NHTSA, the EPA or Cadillac. How we calculate this →