Worst 2021 Mercedes-Benz C 300 Problems
Top 3 most-reported issues with average mileage at failure.
Engine Problems
Fuel System
Airbags
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All Problems by Category
Every NHTSA complaint category for the 2021 Mercedes-Benz C 300.
| Component | Complaints | Crashes | Fires | Avg Mileage | Volume |
|---|---|---|---|---|---|
| Engine Problems | 7 | — | — | 86,078 mi | |
| Fuel System | 2 | — | — | — | |
| Airbags | 1 | — | — | — | |
| Back Over Prevention: Sensing System: Camera | 1 | — | — | — | |
| Electrical Faults | 1 | — | — | — | |
| Transmission / Drivetrain | 1 | — | — | — | |
| Sunroof/Moonroof | 1 | — | — | — |
Search Owner Complaints
Read what owners actually reported to NHTSA for the 2021 Mercedes-Benz C 300. Type a keyword (e.g. “transmission”, “stalling”, “brakes”) to filter.
Recalls for 2021 Mercedes-Benz C 300
2 NHTSA recall campaigns affecting ~386,273 vehicles.
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2023 C-Class, E-Class, S-Class, CLS, SL, GT, GLC, GLE, GLS, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, which can result in a loss of drive power.
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.
Other Mercedes-Benz C 300 Years
2021 Mercedes-Benz C 300 — FAQ
Answers based on real NHTSA complaint and recall data for this specific model year.
Is the 2021 Mercedes-Benz C 300 reliable?
What are common problems with the 2021 Mercedes-Benz C 300?
At what mileage do problems start on the 2021 Mercedes-Benz C 300?
Does the 2021 Mercedes-Benz C 300 have any recalls?
Should I buy a 2021 Mercedes-Benz C 300?
Source: NHTSA (National Highway Traffic Safety Administration) complaint and recall databases, aggregated by VinItel.
Wider context: See the full Mercedes-Benz C 300 reliability report with year-by-year comparison and generation analysis.
Check Your Specific 2021 Mercedes-Benz C 300
Real owner complaints tell you about the model. The VIN tells you about your specific car — accidents, title issues, odometer fraud.
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