Mercedes Benz S Class vs KIA EV6
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 S Class | KIA EV6 |
|---|---|---|
| Complaints on file | 338 | 845 |
| Model years covered | 1994–2012 | 2022–2025 |
| Worst model year | 2000 | 2022 |
| Best model year | 1994 | 2025 |
| Crashes reported | 9 | 40 |
| Fires reported | 9 | 2 |
| Injuries reported | 10 | 15 |
| Deaths reported | 0 | 3 |
| Most complained-about part | Electrical System | Electrical System |
| Share of complaints involving harm | 8.3% | 7.1% |
Mercedes Benz S Class by year
What breaks
Electrical System
118
34.9%
Suspension
67
19.8%
Lights
33
9.8%
Airbags
19
5.6%
Engine & Cooling
15
4.4%
Transmission & Drivetrain
12
3.6%
Tires
11
3.3%
Equipment & Accessories
11
3.3%
KIA EV6 by year
What breaks
Electrical System
402
47.6%
Transmission & Drivetrain
96
11.4%
Fuel & Propulsion
96
11.4%
Other & Unspecified
68
8.0%
Engine & Cooling
38
4.5%
Brakes
25
3.0%
Acceleration & Cruise Control
23
2.7%