Mercedes Benz SL500 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 | Mercedes Benz SL500 | GMC Sierra 3500 |
|---|---|---|
| Complaints on file | 308 | 769 |
| Model years covered | 1992–2009 | 1996–2026 |
| Worst model year | 2004 | 2020 |
| Best model year | 2006 | 2025 |
| Crashes reported | 12 | 47 |
| Fires reported | 30 | 26 |
| Injuries reported | 14 | 25 |
| Deaths reported | 2 | 1 |
| Most complained-about part | Suspension | Brakes |
| Share of complaints involving harm | 18.8% | 12.9% |
Mercedes Benz SL500 by year
What breaks
Suspension
64
20.8%
Electrical System
60
19.5%
Brakes
43
14.0%
Fuel & Propulsion
36
11.7%
Engine & Cooling
16
5.2%
Transmission & Drivetrain
14
4.5%
Airbags
14
4.5%
Steering
10
3.2%
GMC Sierra 3500 by year
What breaks
Brakes
149
19.4%
Transmission & Drivetrain
95
12.4%
Electrical System
84
10.9%
Engine & Cooling
79
10.3%
Fuel & Propulsion
63
8.2%
Airbags
56
7.3%
Steering
41
5.3%
Other & Unspecified
40
5.2%