Mercedes Benz SL550 vs Kenworth T680
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 SL550 | Kenworth T680 |
|---|---|---|
| Complaints on file | 46 | 115 |
| Model years covered | 2003–2009 | 2014–2027 |
| Worst model year | — | 2019 |
| Best model year | — | 2020 |
| Crashes reported | 0 | 6 |
| Fires reported | 5 | 15 |
| Injuries reported | 0 | 5 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Brakes | Brakes |
| Share of complaints involving harm | 10.9% | 22.6% |
Mercedes Benz SL550 by year
What breaks
Brakes
17
37.0%
Electrical System
6
13.0%
Tires
5
10.9%
Wheels
4
8.7%
Body & Structure
3
6.5%
Engine & Cooling
2
4.3%
Transmission & Drivetrain
2
4.3%
Steering
2
4.3%
Kenworth T680 by year
What breaks
Brakes
23
20.0%
Transmission & Drivetrain
17
14.8%
Windows, Mirrors & Wipers
12
10.4%
Engine & Cooling
10
8.7%
Electrical System
8
7.0%
Fuel & Propulsion
7
6.1%
Driver Assist & Collision Avoidance
7
6.1%
Acceleration & Cruise Control
5
4.3%