2009 Chevrolet HHR vs 2009 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 Chevrolet HHR | 2009 Mercury Mariner |
|---|---|---|
| NHTSA complaints | 508 | 315 |
| Recall campaigns | 4 | 1 |
| Service bulletins (TSBs) | 1,002 | 31 |
| Investigations | 1 | 2 |
| Crash reports | 20 | 9 |
| Fire reports | 7 | 0 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 23–26 | 20–32 |
| Median reported incident mileage | 60,000 mi | 97,050 mi |
Reported problems side by side
| Component | Chevrolet HHR | Mercury Mariner |
|---|---|---|
| Steering | 127 | 167 |
| Electrical System | 151 | 22 |
| Air Bags | 104 | 4 |
| Fuel/propulsion System | 69 | 15 |
| Engine | 18 | 53 |
| Power Train | 16 | 44 |
| Vehicle Speed Control | 10 | 41 |
| Service Brakes | 20 | 11 |
Symptoms owners describe
| Rust / corrosion | 45 | 0 |
| Airbag warning light | 42 | 0 |
| Steering problems | 22 | 38 |
| Stalling | 20 | 35 |
| Vibration / shaking | 15 | 14 |
| Check engine light | 13 | 17 |
| Loss of power | 12 | 46 |
| Won’t start | 6 | 0 |
2009 Chevrolet HHR
2009 Mercury Mariner
Compare all Chevrolet HHR 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.