NHTSA lists 14 complaints for the 2021 Mercedes-Benz C 300, 0 of them mention a crash and 0 mention a fire. 0 complaints mention an injury, with 0 injuries and 0 deaths reported.
Data build 2026-10-10.
NHTSA lists this vehicle as MERCEDES-BENZ C 300.
Recalls
See new recalls and investigations this week.
7 recalls.
Date: 2023-06-26. Systems: FUEL SYSTEM, GASOLINE.
Defect: 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.
Consequence: 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 14, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2023070012.
Do not drive: No. Park outside: No.
Date: 2022-05-20. Systems: COMMUNICATION, ELECTRICAL SYSTEM.
Defect: 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 connecti (excerpt)
Consequence: 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. (excerpt)
Remedy: The communication module software will be updated through an Over-the-Air (OTA) update or by a dealer, free of charge. Owner notification letters were mailed July 8, 2022. Owner notification letters will be mailed in phases, on July 8, 2022, May 17, 2024, July 29, 2024, and September 27, 2024. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's numbers are for this recall is 2 (excerpt)
Do not drive: No. Park outside: No.
Date: 2022-04-08. Systems: BACK OVER PREVENTION.
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2018-2021 CLA-Class, GLE/GLS-Class, A-Class, C-Class, E-Class, E-Class Coupe/Convertible, GLA/GLB-Class, GLC-Class, and CLS-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. The rearview camera may not display the rearview image due to a software error. As such, these vehicles fail to comply with the req (excerpt)
Consequence: An inoperable rearview camera display reduces the driver's rear view, increasing the risk of a crash. (excerpt)
Remedy: Dealers will update the rearview camera software, free of charge. Owner notification letters were mailed July 15, 2022. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2022060007. (excerpt)
Do not drive: No. Park outside: No.
Date: 2021-05-28. Systems: SEATS.
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C300 Cabriolet, C43 AMG Cabriolet, C63 AMG Cabriolet, C63 AMG S Cabriolet, E450 Cabriolet, and E53 AMG Cabriolet vehicles. The rear headrests may be incorrectly mounted to the seatbacks.
Consequence: Incorrectly mounted headrests could move or detach from the seat during a crash, increasing the risk of injury.
Remedy: Dealers will inspect the rear seatback guide bushings and replace them if necessary, free of charge. Owner notification letters were mailed July 16, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021060010.
Do not drive: No. Park outside: No.
Date: 2021-04-01. Systems: AIR BAGS, SEAT BELTS, SEATS.
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2021 C-Class, E-Class, E-Class Coupe and Convertible, GLC, CLS, AMG GT 4-door Coupe and G-Class vehicles. Please refer to MBUSA's recall report for specific vehicle model details. A faulty electrical contact within the seat position switch may prevent the driver and passenger air bags and seat belt force limiters from properly activating during (excerpt)
Consequence: Air bags and seat belts that do not perform properly in a crash can increase the risk of injury. (excerpt)
Remedy: MBUSA will notify owners, and dealers will replace the seat position switches, free of charge. Owner letters were mailed May 21, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021040016. (excerpt)
Do not drive: No. Park outside: No.
Date: 2021-02-05. Systems: COMMUNICATION, ELECTRICAL SYSTEM.
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2016 - 2021 CLA-Class, GLA-Class, GLE-Class, GLS-Class, SLC-Class, A-Class, GT-Class, C-Class, E-Class, S-Class, CLS-Class, SL-Class, B-Class, GLB-Class, GLC-Class, and G-Class vehicles. Please refer to the Part 573 report for specific vehicle model details. The software design of the communication module may fail to communicate the correct veh (excerpt)
Consequence: Failure of the eCall system may result in emergency responders being dispatched to the wrong location, increasing the risk of injury following a crash. (excerpt)
Remedy: MBUSA will notify owners, and the communication module software will be updated by a dealer, or through an over-the-air (OTA) update, free of charge. The recall began March 12, 2021. Owners may contact MBUSA customer service at 1-877-762-8267. MBUSA's number for this recall is 2021020025. (excerpt)
Do not drive: No. Park outside: No.
Date: 2021-01-29. Systems: SEAT BELTS.
Defect: Mercedes-Benz USA, LLC (MBUSA) is recalling certain 2017-2021 C300, 2017-2020 AMG C43, and AMG C63 vehicles. The front seat belts might not fully retract to their stowed position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 208, "Occupant Crash Protection."
Consequence: 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.
Remedy: MBUSA will notify owners, and dealers will check the retraction function of the front seat belts and adjust the damping foam within the B-pillars, as necessary, free of charge. The recall began February 26, 2021. Owners may contact MBUSA customer service at 1-800-367-6372. MBUSA's number for this recall is 2021020010.
Do not drive: No. Park outside: No.
Manufacturer communications
177 manufacturer communications.
Communications by system| System | Count |
|---|
| ELECTRICAL SYSTEM | 79 |
|---|
| POWER TRAIN | 29 |
|---|
| EQUIPMENT | 20 |
|---|
| EXTERIOR LIGHTING | 12 |
|---|
| ENGINE | 11 |
|---|
| STEERING | 11 |
|---|
| STRUCTURE | 10 |
|---|
| ENGINE AND ENGINE COOLING | 7 |
|---|
11038187
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic /9Ga TRONIC automatic transmission) and 725.1 (NAG3 facelift/9Ga TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been develop
11038188
Date: 2026-09-26. Type: Service Bulletin/Repair Instructions. Systems: STEERING.
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.
11038186
Date: 2026-09-22. Type: Service Bulletin/Repair Instructions. Systems: SERVICE BRAKES.
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
11037987
Date: 2026-09-14. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Complaint Only vehicles with a variable transfer case are affected. This can be identified through control unit N45 or N15/7 in the quick test. When accelerating with light load, vibrations or jolting sensation may come from the drivetrain. It may be mistaken for a harsh shift. Cause Modified oil qu
11037616
Date: 2026-09-04. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Complaint Customer complaints relating to automatic transmission 725.0 (NAG3 Classic / 9Ga TRONIC automatic transmission) and 725.1 (NAG3 facelift/9Ga TRONIC automatic transmission facelift) For faster, more effective and more targeted diagnosis, Intelligent Predictive Repair (IPR) has been develo
11037228
Date: 2026-08-28. Type: Service Bulletin/Repair Instructions. Systems: STEERING.
Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR i??Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not impact the ability to safely steer or contro
11036516
Date: 2026-08-26. Type: Service Bulletin/Repair Instructions. Systems: POWER TRAIN.
Complaint a ? Harsh 1a 2, 2a 3, and/or 3a 4 shift a ? Jerky shifting a ? Jolting when accelerating from stop Cause Insufficient software application causing elevated K81/K27/B05 fill time adaptations and elevated torque adaptations for concerning shift. Note: Shift quality in E Performance models
11036511
Date: 2026-08-24. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM, STRUCTURE.
Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so that the tailgate no longer opens as a res
11036999
Date: 2026-08-15. Type: Warranty Program/Extension. Systems: FUEL/PROPULSION SYSTEM.
Dear Mercedes-Benz Owner: In our continuing efforts to ensure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA is extending the warranty coverage for the Diagnostic Module for Tank Leakage Detection ("DMTL") on your vehicle from the
11036142
Date: 2026-08-12. Type: Service Bulletin/Repair Instructions. Systems: ELECTRICAL SYSTEM.
Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached diagnostic guide.