2010 Hyundai Sonata vs 2010 Mercury Grand Marquis
Complaints, recalls, TSBs, investigations and safety ratings side by side, from official federal data. Last verified Aug 8, 2026. Raw complaint counts are not adjusted for sales volume.
| Metric | 2010 Hyundai Sonata | 2010 Mercury Grand Marquis |
|---|---|---|
| NHTSA complaints | 345 | 24 |
| Recall campaigns | 2 | 2 |
| Service bulletins (TSBs) | 50 | 17 |
| Investigations | 3 | 0 |
| Crash reports | 19 | 6 |
| Fire reports | 3 | 0 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 22–25 | 19 |
| Median reported incident mileage | 66,000 mi | — |
Reported problems side by side
| Component | Hyundai Sonata | Mercury Grand Marquis |
|---|---|---|
| Structure | 164 | 5 |
| Engine | 29 | 1 |
| Service Brakes | 28 | 2 |
| Power Train | 21 | 2 |
| Air Bags | 20 | 2 |
| Steering | 15 | 5 |
| Electrical System | 16 | 3 |
| Vehicle Speed Control | 11 | 3 |
Symptoms owners describe
| Stalling | 17 | 0 |
| Check engine light | 13 | 0 |
2010 Hyundai Sonata
2010 Mercury Grand Marquis
Compare all Hyundai Sonata vs Mercury Grand Marquis 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.