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 |
|---|---|---|
| 2026 | 1 | 1 |
| 2025 | 0 | 1 |
| 2024 | 3 | 0 |
| 2023 | 1 | 1 |
| 2022 | 0 | 1 |
| 2021 | 1 | 0 |
| 2018 C 300 4MATIC | 12 | 3 |
A model year gets its own page when it has enough data for at least three sections
Most common problems
- Structure4
- Unknown or other3
- Suspension3
- Engine3
- Electrical system3
- Exterior lighting2
- Air bags2
- Visibility/wiper1
NHTSA ODI complaints, all model years
Fuel consumption by year
Official Canadian test results for 19 model years, best variant per year. Combined consumption ranges from 8.6–11.7 L/100 km.
| Year | Variant | City | Highway | Combined |
|---|---|---|---|---|
| 2026 | C 300 4MATIC Sedan · Compact · Premium gasoline | 10.0 | 7.1 | 8.7 |
| 2025 | C 300 4MATIC Sedan · Compact · Premium gasoline | 10.0 | 7.1 | 8.7 |
| 2024 | C 300 4MATIC Sedan · Compact · Premium gasoline | 10.1 | 7.1 | 8.8 |
| 2023 | C 300 4MATIC Sedan · Compact · Premium gasoline | 9.8 | 7.1 | 8.6 |
| 2022 | C 300 4MATIC Sedan · Compact · Premium gasoline | 9.9 | 7.1 | 8.6 |
| 2021 | C 300 4MATIC Sedan · Compact · Premium gasoline | 10.1 | 7.1 | 8.7 |
| 2020 | C 300 4MATIC · Compact · Premium gasoline | 11.0 | 7.3 | 9.4 |
| 2019 | C 300 4MATIC · Compact · Premium gasoline | 11.0 | 7.3 | 9.4 |
| 2018 | C 300 4MATIC · Compact · Premium gasoline | 10.5 | 7.5 | 9.1 |
| 2017 | C 300 4MATIC · Compact · Premium gasoline | 10.1 | 7.8 | 9.0 |
| 2016 | C 300 4MATIC · Compact · Premium gasoline | 10.1 | 7.8 | 9.0 |
| 2015 | C 300 4MATIC · Compact · Premium gasoline | 10.1 | 7.8 | 9.0 |
| 2014 | C 300 4MATIC FFV · Compact · Premium gasoline | 12.2 | 8.5 | 10.5 |
| 2013 | C 300 4MATIC FFV · Compact · Premium gasoline | 11.9 | 8.7 | 10.5 |
| 2012 | C 300 4MATIC · Compact · Premium gasoline | 13.3 | 9.4 | 11.5 |
| 2011 | C 300 4MATIC · Compact · Premium gasoline | 13.3 | 9.4 | 11.5 |
| 2010 | C 300 4MATIC · Compact · Premium gasoline | 13.3 | 9.4 | 11.5 |
| 2009 | C 300 4MATIC · Compact · Premium gasoline | 13.5 | 9.5 | 11.7 |
| 2008 | C 300 4MATIC · Compact · Premium gasoline | 13.5 | 9.5 | 11.7 |
Litres per 100 km. Natural Resources Canada, Fuel consumption ratings (open.canada.ca) · Open Government Licence – Canada
New registrations in Europe
47 new Mercedes-Benz C 300 4MATIC cars registered in the EU, Norway and Iceland between 2011 and 2011, from the European Environment Agency's CO₂ monitoring of every new car. In 2011 the largest markets were Germany (47).
| Year | New cars | CO₂ g/km |
|---|---|---|
| 2011 | 47 | — |
Averages are weighted by registrations; CO₂ is the type-approval value (NEDC until the WLTP switch). European Environment Agency, CO₂ emissions from new passenger cars · re-use permitted with acknowledgement
Recalls
5 campaigns cover the C 300 4MATIC.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2020-2021 CLA, 2019-2022 A-Class, 2022-2023 C-Class, 2024 CLE, 2020-2026 GLA/GLB, and 2023-2024 GLC vehicles. Please refer to MBUSA's recall report for specific model information. The micro-switch in the driver's door lock may corrode and fail to detect an open door, preventing the electronic parking brake or "Auto-Park" feature from engaging automatically. This may result in a vehicle rollaway.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2024-2026 AMG GT, C-Class, E-Class, SL, CLE, and GLC vehicles. The infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blank.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz C300 and C300 4MATIC vehicles. The headlights on these vehicles may not be properly adjusted. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 108, "Lamps, Reflective Devices, and Associated Equipment."
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 C300 Cabriolet, C300 Coupe, C300 4Matic Cabriolet, C300, C300 4Matic Coupe, C300 4Matic, C43 AMG Cabriolet, C43 AMG Coupe, C63 S AMG Cabriolet, C350e Plug-In Hybrid, C63 AMG Cabriolet, C63 AMG Coupe, C63 S AMG Coupe, C63 AMG, C63 S AMG, 2018-2019 GLC300 4Matic Coupe, GLC300, GLC63 AMG Coupe, GLC300 4Matic, GLC350e Plug-In Hybrid, GLC43 AMG Coupe, GLC43 AMG, GLC63 S AMG Coupe, and GLC63 AMG vehicles equipped with Audio 20 head units and automatic child seat recognition. The status of the passenger side air bag may not display correctly.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018 Mercedes-Benz C300, C300 4MATIC, C63 AMG, and C63S AMG vehicles. Incorrect bonding of the rear window may cause the window to loosen and detach from the vehicle.
NHTSA recalls