2006 Hummer H3 vs 2006 Mercedes-Benz R350
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 | 2006 Hummer H3 | 2006 Mercedes-Benz R350 |
|---|---|---|
| NHTSA complaints | 361 | 99 |
| Recall campaigns | 4 | 2 |
| Service bulletins (TSBs) | 737 | 72 |
| Investigations | 0 | 0 |
| Crash reports | 10 | 2 |
| Fire reports | 27 | 10 |
| NCAP overall rating | — | — |
| EPA MPG (combined) | 16 | 16 |
| Median reported incident mileage | 77,147 mi | 80,000 mi |
Reported problems side by side
| Component | Hummer H3 | Mercedes-Benz R350 |
|---|---|---|
| Electrical System | 96 | 14 |
| Engine | 52 | 17 |
| Suspension | 29 | 26 |
| Engine and Engine Cooling | 35 | 16 |
| Structure | 36 | 3 |
| Power Train | 20 | 13 |
| Visibility | 31 | 0 |
| Visibility/wiper | 29 | 0 |
Symptoms owners describe
| Check engine light | 25 | 19 |
| Won’t start | 23 | 0 |
| Misfire / rough idle | 23 | 0 |
| Electrical failures | 18 | 0 |
| Stalling | 15 | 6 |
| Loss of power | 9 | 5 |
| Rust / corrosion | 8 | 0 |
| Vibration / shaking | 5 | 0 |
2006 Hummer H3
2006 Mercedes-Benz R350
Compare all Hummer H3 vs Mercedes-Benz R350 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.