Mercedes-Benz C 300 problems by model year
Updated from NHTSA data · How we count
NHTSA has 431 owner complaints and 46 recalls on file for the Mercedes-Benz C 300 (2017–2026). The 2017 C 300 has the most serious complaints, most often about engine.
- Complaints
- 431
- Recalls
- 46
- Model years
- 10
- Worst year
- 2017
Complaints by model year
Newer model years have had less time on the road, so they naturally have fewer complaints. Compare a year against its neighbors rather than against brand-new models.
Worst Mercedes-Benz C 300 years to buy
Ranked by our severity-weighted complaint score (crashes, fires and injuries count extra — how it works).
- 2017 Mercedes-Benz C 300 — 178 complaints, 6 crashes, 3 fires; top problem: Engine
- 2018 Mercedes-Benz C 300 — 79 complaints, 3 crashes; top problem: Engine
- 2020 Mercedes-Benz C 300 — 33 complaints, 5 crashes; top problem: Engine
- 2019 Mercedes-Benz C 300 — 63 complaints, 3 crashes; top problem: Engine
- 2023 Mercedes-Benz C 300 — 22 complaints, 2 crashes; top problem: Driver Assistance & Safety Tech
Fewest serious complaints among years at least 3 years old: 2021 (14 complaints).
Every Mercedes-Benz C 300 model year
| Year | Complaints | Crashes | Fires | Injuries | Recalls | Top problem |
|---|---|---|---|---|---|---|
| 2026 C 300 | 2 | 0 | 0 | 0 | 1 | Airbags |
| 2025 C 300 | 4 | 0 | 0 | 0 | 2 | Driver Assistance & Safety Tech |
| 2024 C 300 | 11 | 2 | 0 | 0 | 3 | Electrical System |
| 2023 C 300 | 22 | 2 | 0 | 1 | 9 | Driver Assistance & Safety Tech |
| 2022 C 300 | 25 | 1 | 0 | 1 | 9 | Driver Assistance & Safety Tech |
| 2021 C 300 | 14 | 0 | 0 | 0 | 7 | Engine |
| 2020 C 300 | 33 | 5 | 0 | 5 | 9 | Engine |
| 2019 C 300 | 63 | 3 | 0 | 1 | 17 | Engine |
| 2018 C 300 | 79 | 3 | 0 | 1 | 18 | Engine |
| 2017 C 300 | 178 | 6 | 3 | 10 | 15 | Engine |
Most common Mercedes-Benz C 300 problem areas (all years)
- Engine141 complaints
- Fuel, Hybrid & EV Propulsion68 complaints
- Electrical System58 complaints
- Body & Structure50 complaints
- Driver Assistance & Safety Tech41 complaints
- Seats & Seat Belts27 complaints
- Transmission & Drivetrain24 complaints
- Brakes18 complaints
- Steering18 complaints
- Visibility & Wipers15 complaints
Complaint trend
Mercedes-Benz C 300 recalls
Risk: A vehicle rollaway increases the risk of a crash or injury.
Risk: An instrument panel display that fails to show critical safety information, such as the speedometer and warning lights, increases the risk of a crash.
Risk: An incorrect fuse box can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
Risk: A loose seat belt may not properly restrain an occupant during a crash, increasing the risk of injury.
Risk: An overheated wire can cause a fire and a sudden loss of drive power, increasing the risk of a crash.
Risk: An 80-Amp fuse that fails can result in a sudden loss of drive power or a loss of critical safety functions such as the restraint systems or instrument cluster, increasing the risk of a crash or injury. Additionally, there could be an increased risk of a fire.
Risk: A loss of drive power can increase the risk of a crash.
Risk: A detached roof panel can become a road hazard, increasing the risk of a crash.
Risk: An overheated wiring harness can increase the risk of a fire.
Risk: A loss of drive power can increase the risk of a crash.
Risk: A loss of drive power can increase the risk of a crash.
Risk: An electrical short circuit in the SAM could lead to various malfunctions, such as rear exterior lighting failure, unintentional rear seat folding, and rearview camera failure, increasing the risk of a crash or injury. In addition, an electrical short circuit might increase the risk of a fire.
Risk: A disabled eCall system would prevent a vehicle occupant from contacting the emergency services call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Risk: An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash.
Risk: Deactivated hands-off detection will prevent DISTRONIC system features from functioning, including warnings to grab the steering wheel and calling first responders as part of the Active Emergency Stop Assist, which can increase the risk of a crash or injury.
Risk: A fuel leak in the presence of an ignition source, such as hot engine or exhaust components, can increase the risk of a fire.
Risk: Incorrectly adjusted headlights may reduce visibility, increasing the risk of a crash.
Risk: Incorrectly mounted headrests could move or detach from the seat during a crash, increasing the risk of injury.
Risk: Air bags and seat belts that do not perform properly in a crash can increase the risk of injury.
Risk: The adhesive bonding of the front panel might deteriorate, possibly causing the front panel to detach from the vehicle and become a road hazard, increasing the risk of a crash.
Risk: A disabled eCall system would prevent a vehicle occupant from contacting emergency services through the call center in an emergency, potentially delaying emergency responders and increasing the risk of injury.
Risk: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash.
Risk: If the seat belt does not fully retract, the occupant may find the operation of the seat belt inconvenient and not wear it, increasing the risk of injury in the event of a crash.
Risk: In the event of a rear-end crash, the center console lid may open, increasing the risk of injury to occupants.
Risk: Without the audible tone and blinking warning light to remind the front seat occupants that their seat belts are not buckled, they may forget to buckle their seat belt, increasing their risk of injury in the event of a crash.
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Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. Methodology