Mercury Mariner Hybrid vs GMC Sierra 3500
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 | Mercury Mariner Hybrid | GMC Sierra 3500 |
|---|---|---|
| Complaints on file | 314 | 774 |
| Model years covered | 2006–2012 | 1996–2026 |
| Worst model year | 2008 | 2020 |
| Best model year | 2010 | 2025 |
| Crashes reported | 8 | 47 |
| Fires reported | 0 | 26 |
| Injuries reported | 1 | 25 |
| Deaths reported | 0 | 1 |
| Most complained-about part | Engine & Cooling | Brakes |
| Share of complaints involving harm | 2.9% | 12.8% |
Mercury Mariner Hybrid by year
What breaks
Engine & Cooling
69
22.0%
Brakes
62
19.7%
Steering
41
13.1%
Electrical System
38
12.1%
Fuel & Propulsion
35
11.1%
Transmission & Drivetrain
27
8.6%
Acceleration & Cruise Control
20
6.4%
Other & Unspecified
9
2.9%
GMC Sierra 3500 by year
What breaks
Brakes
150
19.4%
Transmission & Drivetrain
95
12.3%
Electrical System
84
10.9%
Engine & Cooling
79
10.2%
Fuel & Propulsion
63
8.1%
Airbags
56
7.2%
Steering
41
5.3%
Other & Unspecified
40
5.2%