2007 Hummer H3 problems and complaints
Owners have filed 237 complaints with NHTSA about the 2007 Hummer H3. The most-reported areas: Electrical System (76), Engine (44), Unknown Or Other (25).
Key takeaways
- 237 owner complaints on file with NHTSA.
- 12 involve a crash, 18 a fire, 19 reported injuries.
- Complaints are unverified owner reports; recalls are confirmed defects.
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 76 | 32% |
| Engine | 44 | 19% |
| Unknown Or Other | 25 | 11% |
| Visibility/Wiper | 24 | 10% |
| Structure | 21 | 9% |
| Visibility | 20 | 8% |
| Power Train | 19 | 8% |
| Air Bags | 19 | 8% |
| Engine And Engine Cooling | 13 | 5% |
| Electronic Stability Control (esc) | 12 | 5% |
| Fuel/Propulsion System | 11 | 5% |
| Service Brakes | 10 | 4% |
One complaint can name several components, so shares add up to more than 100%.
| Version | Overall | Front | Side | Rollover |
|---|---|---|---|---|
| 2007 Hummer H3 4-DR w/SAB | Not rated | Not rated | Not rated | 3/5 |
| 2007 Hummer H3 4-DR | Not rated | Not rated | Not rated | 3/5 |
Latest complaints, as filed
Owner-written and unverified by NHTSA.
Electrical System - filed 2026-07-02
The contact owned a 2007 Hummer H3. The contact stated that while the vehicle was parked, the AC was turned on, and the contact became aware of smoke entering the cabin of the vehicle. The smoke was coming from the front passenger's side underneath the dashboard. The AC was turned off, and the smoke ceased. The contact...
Electrical System - filed 2025-06-04
Odometer Fraud. The contact purchased a 2007 Hummer H3. The contact discovered that there was a mileage discrepancy. The vehicle was an independent dealer sale. At the time of purchase, the vehicle mileage was 122,791 and at the time of registration, it was discovered that the mileage was 122,799 but additional documen...
Suspension - filed 2024-01-31
The problem was unknown to me and probably would be to any vehicle owner that is not a mechanic. I was driving a death trap and didn't know how easily it could have been a serious problem. The driver side leaf spring bracket had completely broke apart from the frame on the upper drive side corner in an area that withou...
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More for the 2007 Hummer H3
Complaints are reports filed by owners with the National Highway Traffic Safety Administration. NHTSA publishes them without verifying them, and counts rise with how many cars were sold, so compare years of the same model rather than different models. Crash ratings are NHTSA's own 5-Star Safety Ratings results.