2024 Mercedes-Benz C 300 problems, complaints & recalls
Most-reported problem areas: Service Brakes (2) · Electrical System (2) · Vehicle Speed Control (1)
🧭 Reliability snapshot
Compared against other Mercedes-Benz C 300 model years — complaint volume vs the model's median year, recalls and severity. How we score →
Safety recalls (3)
Seat Belts:front 2025-05-02 · campaign 25V253000 · 46 vehicles
Defect: 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.
Fix: 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.
Electrical System:wiring:fuses And Circuit Breakers 2024-02-16 · campaign 24V115000 · 31,848 vehicles
Defect: 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.
Fix: 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.
Fuel System, Gasoline:delivery:fuel Pump 2023-12-21 · campaign 23V880000 · 79,676 vehicles
Defect: 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.
Fix: 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.
Service bulletins (314)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Steering 2026-09-26 · LI46.10-P-080896 · Service Bulletin/Repair Instructions
complaint slight creaking noises when steering. cause noises may come from one or more sleeves of the horn contact plate. remedy remove the horn contact plate and check the sleeves for noise; see attached video. if necessary, apply lubricant to the sleeves.
Power Train 2026-09-26 · LI27.00-P-073124 · Service Bulletin/Repair Instructions
complaint customer complaints relating to automatic transmission 725.0 (nag3 classic /9g‑tronic automatic transmission) and 725.1 (nag3 facelift/9g‑tronic automatic transmission facelift) for faster, more effective and more targeted diagnosis, intelligent predictive repair (ipr) has been developed a
Electrical System 2026-09-25 · OTA-Comm. Mod. SW. Update · Over The Air
a software update will be performed that provides enhancements to the robustness and system stability of the communication module. the update is free of charge and runs in the background, which takes about 8 minutes to install. during this time, the vehicle can be driven without any restrictions, an
Visibility/Wiper 2026-09-25 · LI83.90-P-080935 · Service Bulletin/Repair Instructions
complaint cel illuminates and/or ac does not blow cold. cause potentially relevance to hardware and/or software remedy scenario 1: 1. if the ac does not blow cold air, replace compressor (if compressor's index and part number figure 1 match against table 1). a. if the compressor does not fall within
Service Brakes 2026-09-22 · LI42.10-P-078779 · Service Bulletin/Repair Instructions
complaint repeat workshop visit for vehicle vibration while braking from 60mph. note: although the symptom is similar to a tire or wheel vibration, it is usually readily noticeable that it is distinctly different if it happens at all times or only while braking. cause although the cause of the vibra
Visibility/Wiper 2026-09-18 · PSL-NCU Return Parts 9/18 · Other
dear dealer partners, the part numbers listed in the chart below should no longer be installed and any existing stock must be returned to your facing pdc. the deadline for all dealer returns is thursday, october 8th, 2026. after october 8th, we will no longer accept returns of these parts. these par
Showing the 6 most recent of 314 bulletins. Search all of them free at nhtsa.gov.
What owners report
2026-07-19 · Engine“driving a 2024 mercedes c300 on the florida turnpike in the left lane at 70 mph the engine suddenly slowed down. while the vehicle slowed in heavy traffic i was able to merge to the outside lane where it stopped. i called mercedes emergency who suggested waiting a while and try starting the vehicle . after a few minutes i was able to start the veh…”
2026-07-09 · Electrical System“while i am driving my car it will make a loud crackling sound then my screens go black and warning sounds go off! this is not normal and i read there are recalls but when i entered my vin# nothing came up. not to mention since i bought the car last february, i have had nothing but issues with my ac turning off which that i have taken to the dealers…”
2026-01-08 · Unknown Or Other“the car jerks so hard at times randomly that it feels like i got rear ended and it is completely unsafe. it also does small jerks at times. it's happened driving 70 mph down a highway, making a right turn accelerating slowly. going slow down the street at 35, at a red light completely stopped or stop sign. there's no rhyme or reason to it. i've tak…”
2025-10-11 · Vehicle Speed Control“on friday [xxx] at approximately [xxx]. my wife and i were driving our 2024 c-class 300 (~8,000 miles on this vehicle) on [xxx] and entering the intersection of [xxx]. riverside, ca 92506 when all of sudden the car just died (the engine stopped running, pushing the gas pedal with no power) and all the dashboard lights came on flashing like crazy. …”
2025-07-30 · Seats“the driver’s seat in my car moves backward on its own while i’m driving. i’ve taken the car to the dealership several times, but the issue still hasn’t been resolved. this is extremely dangerous and frightening. it has happened twice on the highway, several times in the dealership’s garage, and most recently, while i was pulling out of a parking s…”
2025-07-30 · Service Brakes · 💥 crash“ the vehicle appears to have experienced a braking system malfunction, possibly involving the brake-by-wire system, electronic stability control (esc), or unintended acceleration event. when the brake pedal was fully depressed, the car suddenly and uncontrollably accelerated forward into a cinder block wall. after the incident, it was observed that…”
2025-05-07 · Service Brakes“see attached document for complaint. …”
2024-08-23 · Power Train · 💥 crash“issue: post-airbag deployment pcm lockout description: i am reporting a critical safety concern regarding the 2024 mercedes-benz c300. after an airbag deployment, the vehicle's powertrain control module (pcm) is designed to automatically lock, preventing the engine from being restarted. while this feature is intended to enhance safety, it poses si…”
2024-06-18 · Unknown Or Other“i was driving and all of a sudden a loud sound started occurring and the sound appeared to come from my breaks as if they were about to give out. the car is currently at mercedes getting looked at. i’m concerned for my safety as i have taken this car in for two other issues in the last couple of months. …”
2024-05-11 · Unknown Or Other“the vehicle was in drive, as i was turning right, the vehicle shifted from p(park) to n(netural) on the roadway. the car would not allow me to shift back to drive. i had to literally turn the car off and then back on in the middle of the road in order to put it back in drive thankfully, there was not a vehicle nearby at the time, which could hav…”
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.