Complaints by model year
Each bar is one model year. The most recent years are still collecting complaints.
NHTSA ODI complaints (public domain) · updated 23 Oct 2026
Year by year
| Model year | Complaints | Recalls |
|---|---|---|
| 2020 | 1 | 2 |
| 2019 | 1 | 2 |
| 2018 SLC 300 | 1 | 1 |
A model year gets its own page when it has enough data for at least three sections
Most common problems
- Unknown or other1
- Fuel/propulsion system1
- Engine1
- Electrical system1
NHTSA ODI complaints, all model years
Fuel consumption by year
Official Canadian test results for 4 model years, best variant per year. Combined consumption ranges from 8.5–8.8 L/100 km.
| Year | Variant | City | Highway | Combined |
|---|---|---|---|---|
| 2020 | SLC 300 · Two-seater · Premium gasoline | 10.1 | 7.3 | 8.8 |
| 2019 | SLC 300 · Two-seater · Premium gasoline | 10.0 | 7.3 | 8.8 |
| 2018 | SLC 300 · Two-seater · Premium gasoline | 9.6 | 7.4 | 8.6 |
| 2017 | SLC 300 · Two-seater · Premium gasoline | 9.5 | 7.2 | 8.5 |
Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada
Recalls
2 campaigns cover the SLC 300.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2022 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, AMG GT-Class, C-Class, E-Class, S-Class, SL-Class, GLC-Class, CLS-Class, GLB-Class, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. An error in the communication module's SIM card software can cause a mobile network connection failure, disabling the emergency call (eCall) system.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct vehicle location for the emergency call system (eCall) in the event of a crash.
NHTSA recalls