Hummer H3 vs Mercury Mountaineer
Both cars' complete complaint records, side by side.
Read the totals carefully. NHTSA publishes no sales figures, so the car that sold more collects more complaints regardless of quality. The rows worth weighing are the proportions — the share of complaints that involved harm, and which part dominates.
| Measure | Hummer H3 | Mercury Mountaineer |
|---|---|---|
| Complaints on file | 1,064 | 2,646 |
| Model years covered | 2003–2010 | 1996–2010 |
| Worst model year | 2006 | 1997 |
| Best model year | 2008 | 2010 |
| Crashes reported | 38 | 191 |
| Fires reported | 73 | 91 |
| Injuries reported | 34 | 148 |
| Deaths reported | 1 | 5 |
| Most complained-about part | Electrical System | Transmission & Drivetrain |
| Share of complaints involving harm | 13.7% | 16.4% |
Hummer H3 by year
What breaks
Electrical System
247
23.2%
Engine & Cooling
177
16.6%
Windows, Mirrors & Wipers
147
13.8%
Body & Structure
77
7.2%
Other & Unspecified
68
6.4%
Airbags
64
6.0%
Transmission & Drivetrain
43
4.0%
Suspension
42
3.9%
Mercury Mountaineer by year
What breaks
Transmission & Drivetrain
399
15.1%
Tires
364
13.8%
Body & Structure
298
11.3%
Acceleration & Cruise Control
221
8.4%
Engine & Cooling
217
8.2%
Electrical System
190
7.2%
Brakes
142
5.4%
Seats
127
4.8%