Mercedes Benz SL Class vs KIA Niro EV
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 SL Class | KIA Niro EV |
|---|---|---|
| Complaints on file | 58 | 143 |
| Model years covered | 1996–2005 | 2019–2025 |
| Worst model year | — | 2022 |
| Best model year | — | 2020 |
| Crashes reported | 4 | 14 |
| Fires reported | 1 | 0 |
| Injuries reported | 3 | 6 |
| Deaths reported | 0 | 0 |
| Most complained-about part | Brakes | Electrical System |
| Share of complaints involving harm | 13.8% | 14% |
Mercedes Benz SL Class by year
What breaks
Brakes
9
15.5%
Suspension
6
10.3%
Body & Structure
5
8.6%
Windows, Mirrors & Wipers
5
8.6%
Equipment & Accessories
5
8.6%
Engine & Cooling
4
6.9%
Airbags
4
6.9%
Lights
4
6.9%
KIA Niro EV by year
What breaks
Electrical System
35
24.5%
Other & Unspecified
29
20.3%
Transmission & Drivetrain
19
13.3%
Brakes
11
7.7%
Driver Assist & Collision Avoidance
11
7.7%
Acceleration & Cruise Control
8
5.6%
Fuel & Propulsion
8
5.6%
Engine & Cooling
7
4.9%