AI DamageMercury Mariner Hybrid: problems, complaints, bulletins
Summary for the Mercury Mariner Hybrid across 6 model years: 212 owner complaints and 0 NHTSA service bulletins, plus repair videos. Pick a year for details.
Model years
What fails most often
- 1 Service brakes 29% of all complaints
- 2 Engine 23% of all complaints
- 3 Steering 19% of all complaints
- 4 Electrical system 18% of all complaints
- 5 Powertrain 13% of all complaints
- 6 Fuel/propulsion system 12% of all complaints
- 7 Engine and cooling 9% of all complaints
- 8 Vehicle speed control 9% of all complaints
- Service brakes: 61 complaints (29% of all), 4 of them with a crash reported by the owner.
- Engine: 49 complaints (23% of all).
- Steering: 41 complaints (19% of all), 1 of them with a crash reported by the owner.
- Electrical system: 38 complaints (18% of all).
- Powertrain: 27 complaints (13% of all).
Symptoms owners describe
How many of the 212 NHTSA complaints mention each symptom (automatic count from complaint text; one complaint can mention several).
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Service brakes | 61 | 4 | 0 |
| Engine | 49 | 0 | 0 |
| Steering | 41 | 1 | 0 |
| Electrical system | 38 | 0 | 0 |
| Powertrain | 27 | 0 | 0 |
| Fuel/propulsion system | 25 | 0 | 0 |
| Engine and cooling | 20 | 0 | 0 |
| Vehicle speed control | 20 | 1 | 0 |
| Hybrid propulsion system | 8 | 0 | 0 |
| Electronic stability control | 5 | 0 | 0 |
| Structure | 3 | 0 | 0 |
| Fuel system | 2 | 0 | 0 |
| Air bags | 1 | 1 | 0 |
| Equipment | 1 | 0 | 0 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
My abs sensor went on then off eventually an abs regen light came on and I had no brakes so I drove ,very carefully, 83 miles to my ford dealer ( with no brakes) to find out that I needed a complete replacement of my abs hybrid braking module. $3900!
Power steering went out, couldn't turn vehicle fast enough to avoid crash. Recall 14s05.
On friday, dec 13th, I was driving home in cruise control at 60 mph. My blood pressure dropped suddenly and I passed out at the wheel. I woke up just in time to crash, no time to react. I impacted, head on, a creek bank after jumping over the creek.
The contact stated that while driving 40 mph, the braking system failed with the illumination of the abs and brake warning lights. As a result, the contact crashed into a stop sign. The were no injuries. A police report was not filed. The vehicle was not repaired and the manufacturer was not notified.
Tl contact owns a 2009 mercury mariner hybrid. The contact stated that after applying the brakes in the parking lot the vehicle accelerated. The vehicle did not respond to the brakes and did not stop until the vehicle crashed into a parked vehicle.
In a hard-braking situation, brakes failed - no discernible deceleration at all, pushing harder than I've ever had to before. This made for rear-ending the guy ahead of me. Forensics investigator w/ mech found odb dtcs showed only p0a8d and b1318 - one of which shows a low voltage to abs system.
When owners complained
NHTSA complaints by filing year. The peak shows at what age the problems show up most.
What to check before buying
- Service brakes. Pedal feel, ABS operation, leaks, discs and hoses.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
Other models of this make
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-05.