Jeep Commander 4X4 vs Mercury Mariner
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 | Jeep Commander 4X4 | Mercury Mariner |
|---|---|---|
| Complaints on file | 696 | 1,722 |
| Model years covered | 2007–2009 | 2005–2011 |
| Worst model year | 2007 | 2008 |
| Best model year | 2009 | 2007 |
| Crashes reported | 16 | 48 |
| Fires reported | 0 | 4 |
| Injuries reported | 11 | 32 |
| Deaths reported | 3 | 0 |
| Most complained-about part | Electrical System | Steering |
| Share of complaints involving harm | 4.3% | 4.9% |
Jeep Commander 4X4 by year
What breaks
Electrical System
222
31.9%
Engine & Cooling
155
22.3%
Transmission & Drivetrain
105
15.1%
Acceleration & Cruise Control
34
4.9%
Windows, Mirrors & Wipers
28
4.0%
Other & Unspecified
21
3.0%
Steering
18
2.6%
Airbags
16
2.3%
Mercury Mariner by year
What breaks
Steering
560
32.5%
Transmission & Drivetrain
235
13.6%
Engine & Cooling
193
11.2%
Acceleration & Cruise Control
180
10.5%
Fuel & Propulsion
147
8.5%
Electrical System
105
6.1%
Brakes
67
3.9%
Other & Unspecified
57
3.3%