2024 Mercedes-Benz C300 Problems, Recalls & Reliability
Verdict
BestComplaint Index
13/100
#14 most-complained of 16 C300 years
Based on NHTSA complaints per model-year, not a reliability rating. Methodology
The 2024 Mercedes-Benz C300 has a Complaint Index of 13, the second-best year of the 16 model years tracked, ranking 14th worst out of 16. NHTSA lists 11 complaints, 3 recalls, and 2 crashes, with no fires, injuries, or deaths reported, earning it a "Best" verdict relative to other C300 years.
- Complaints
- 11
- Recalls
- 3
- Crashes / fires
- 2 / 0
- Injuries / deaths
- 0 / 0
- NHTSA overall rating
- Not rated
- EPA combined MPG
- 28.5
- 24.5 city / 34.5 hwy
Top 2024 Mercedes-Benz C300 problems
NHTSA owner complaints by component group. Groups with 15+ complaints have their own page.
- Electrical System4 (36%)
- Brakes3 (27%)
- Other3 (27%)
- Airbags2 (18%)
- Engine2 (18%)
- Collision Avoidance & Cameras2 (18%)
- Structure & Body1 (9%)
- Transmission & Powertrain1 (9%)
What owners report
- Owners report the Powertrain Control Module can lock after an airbag deployment, preventing the engine from restarting even when it may be needed to move the car out of danger.
- Parking and front collision sensors have triggered false alerts with loud alarms near intersections even when nothing was in front of or behind the car.
- Some drivers heard a loud noise coming from the brakes that felt like the brakes were about to fail.
- The driver's seat has been reported to slide backward on its own while driving, including on the highway and while pulling out of a parking spot.
- Owners describe a loud crackling sound followed by the screens going black and warning sounds sounding off, along with separate complaints about the AC turning off on its own.
- One owner reported the engine suddenly lost power while driving 70 mph in heavy traffic before the vehicle came to a stop.
2024 Mercedes-Benz C300 recalls
3 NHTSA recall campaigns list this model year.
- NHTSA 25V253000May 2, 2025Seat Belts46 vehicles
Seat belts:front
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2022-2025 C 300, and 2023-2024 AMG C 43 vehicles. The driver-side seat belt cover may not be properly installed on the seat belt tensioner, which can cause the seat belt anchor to come loose.
Risk: A loose seat belt may not properly restrain an occupant during a crash, increasing the risk of injury.
Remedy: Dealers will inspect and repair the seat belt covers, as necessary, free of charge. Owner notification letters were mailed May 16, 2025. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2025040012.
- NHTSA 24V115000Feb 16, 2024Electrical System31,848 vehicles
Electrical system:wiring:fuses and circuit breakers
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2023-2024 C300, AMG C43, S580e, S580, Maybach S580, Maybach S680, AMG SL43, AMGSL63, GLC300, EQE350, EQE500, EQS450, EQS580, AMG EQS, 2023 S500, AMG SL55, AMG EQE, 2024 E350, E450, AMG C63e S, CLE300 Coupe, CLE450 Coupe, and GLC300 Coupe vehicles. The 80-Amp fuses may have been manufactured incorrectly, which can cause the fuses to fail.
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.
Remedy: Dealers will replace the main fuse boxes, free of charge. Owner notification letters were mailed April 5, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2024030008.
- NHTSA 23V880000Dec 21, 2023Fuel System79,676 vehicles
Fuel system, gasoline:delivery:fuel pump
Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021-2024 GLE, GLS, C-Class, E-Class, S-Class, SL, GLC, CLS, AMG GT, and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle details. The fuel pump may shutdown, causing a loss of drive power.
Risk: A loss of drive power can increase the risk of a crash.
Remedy: Dealers will replace the fuel pump, free of charge. Owner notification letters were mailed on June 28, 2024. Owner notification letters will be mailed in phases, on February 23, 2024, April 19, 2024, June 28, 2024, August 9, 2024, October 1, 2024, and December 2, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. This recall is an expansion of NHTSA recall number 23V-445.
2024 Mercedes-Benz C300 fuel economy and fuel cost
- City
- 24.5 MPG
- Highway
- 34.5 MPG
- Combined
- 28.5 MPG
- Annual fuel cost (EPA)
- $2,800
- 15,000 mi/yr
- Fuel
- Premium
- Current regular gas
- $4.32/gal
- national avg.
EPA figures; median across configurations of this model year. Estimate your own cost with the fuel cost calculator.
2024 compared with other C300 years
Frequently asked questions
- Is the 2024 Mercedes-Benz C300 reliable?
- Based on NHTSA complaints and recalls, the 2024 C300 has a Complaint Index of 13 and a "Best" verdict, ranking 14th worst out of 16 model years, meaning it has fewer reported problems than most other C300 years.
- What are the most common problems with the 2024 Mercedes-Benz C300?
- The top problem area is the Electrical System, with 4 complaints making up 36% of all reports, followed by Brakes at 3 complaints (27%) and Airbags and Engine tied at 2 complaints each (18%).
- Does the 2024 Mercedes-Benz C300 have any recalls?
- NHTSA lists 3 recalls for the 2024 C300, covering seat belt covers, a main fuse box replacement for the electrical system, and a fuel pump replacement, none of which are do-not-drive recalls.
- How does the 2024 C300 compare to other model years?
- With a Complaint Index of 13, the 2024 C300 ranks better than most other years; only the 2021 model (index 7) and 2022 model (index 20) are close, while years like 2010 and 2011 had indexes of 93 and 100.
- What is the fuel economy of the 2024 Mercedes-Benz C300?
- The EPA rates the 2024 C300 at 28.5 mpg combined (24.5 city / 34.5 highway), with an estimated annual fuel cost of $2,800.