2009 Mercury Mariner vs 2011 Mercury Mariner
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2009 Mercury Mariner | 2011 Mercury Mariner |
|---|---|---|
| NHTSA complaints | 315 | 87 |
| Recall campaigns | 1 | 2 |
| Service bulletins (TSBs) | 31 | 27 |
| Investigations | 2 | 3 |
| Crash reports | 9 | 2 |
| Fire reports | 0 | 0 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 20–32 | 20–32 |
| Median reported incident mileage | 97,050 mi | 53,000 mi |
Reported problems side by side
| Component | Mercury Mariner | Mercury Mariner |
|---|---|---|
| Steering | 167 | 20 |
| Power Train | 44 | 24 |
| Engine | 53 | 11 |
| Vehicle Speed Control | 41 | 15 |
| Fuel/propulsion System | 15 | 22 |
| Electrical System | 22 | 6 |
| Fuel System, Gasoline | 15 | 7 |
| Service Brakes | 11 | 0 |
Symptoms owners describe
| Loss of power | 46 | 6 |
| Steering problems | 38 | 0 |
| Stalling | 35 | 15 |
| Check engine light | 17 | 7 |
| Vibration / shaking | 14 | 0 |
| Hesitation / surging | 11 | 6 |
2009 Mercury Mariner
2011 Mercury Mariner
Compare all Mercury Mariner vs Mercury Mariner years →
Method. Complaints are unique NHTSA reports. A vehicle that sold more units will naturally accumulate more complaints — use shares and read the underlying reports before drawing conclusions.