2010 Mercury Mariner problems and complaints
Owners have filed 279 complaints with NHTSA about the 2010 Mercury Mariner. The most-reported areas: Vehicle Speed Control (69), Steering (63), Engine (63).
Key takeaways
- 279 owner complaints on file with NHTSA.
- 3 involve a crash, 2 a fire, 6 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Vehicle Speed Control | 69 | 25% |
| Steering | 63 | 23% |
| Engine | 63 | 23% |
| Power Train | 62 | 22% |
| Fuel/Propulsion System | 57 | 20% |
| Electrical System | 30 | 11% |
| Unknown Or Other | 12 | 4% |
| Fuel System | 8 | 3% |
| Gasoline | 8 | 3% |
| Structure | 7 | 3% |
| Electronic Stability Control (esc) | 7 | 3% |
| Service Brakes | 6 | 2% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2010 Mercury Mariner 4-DR. w/SAB | Not rated | Not rated | Not rated | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Steering - filed 2026-08-11
The contact owns a 2010 Mercury Mariner. The contact stated that while driving approximately 20 MPH, an alarm sounded, and the steering wheel locked up. The message "Power Steering Assist Fault" was displayed. The contact was able to drive to the residence nearby. The vehicle was not diagnosed or repaired. The manufact...
Steering - filed 2025-12-23
The contact owns a 2010 Mercury Mariner. The contact stated that after starting the vehicle, the message "Power Steering Assist Failure" was displayed, and the steering wheel became extremely difficult to turn in either direction. The local dealer and manufacturer were notified of the failure, but no assistance was pr...
Electrical System,unknown Or Other,engine - filed 2025-09-08
Me and my wife purchased a vehicle from a private seller to use for personal commute. A month later we started to notice more issue were occurring with the car then stated from the seller. I took it to an auto body shop to get it inspected and possibly serviced and upon that inspection the clerk stated that there was a...
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More for the 2010 Mercury Mariner
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.