2022 Mercedes-Benz C 300 problems & reliability
25 owner complaints filed with NHTSA for the 2022 Mercedes-Benz C 300, alongside 9 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
1 complaint report injuries (1 injured).
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Electrical System | 7 | 28% |
| Forward Collision Avoidance | 5 | 20% |
| Fuel/propulsion System | 4 | 16% |
| Back Over Prevention | 3 | 12% |
| Fuel System, Gasoline | 3 | 12% |
| Lane Departure | 3 | 12% |
| Engine | 2 | 8% |
| Service Brakes | 2 | 8% |
| Unknown OR Other | 2 | 8% |
| Exterior Lighting | 1 | 4% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
Complaints by incident year
What owners report
“Car fails to accelerate past 25 mph when entering roadway. Roadway area is 45mph and vehicle would not accelerate to reach safe levels. This out myself and occupants of my vehicle in danger as traffic is already at the 45+ mph limit. Vehicle has 30,000 miles. Engine light came on after incident.”
Engine · filed Jun 18, 2026
“Refer to Mercedes Complaint letter dated August 21, 2025. Refer to EDR report of the crash Mercedes Benz is claiming no responsibility for the failure of Active Brake Assist (ABA) during a frontal impact collision that resulted in the car total loss. The sensors also didn't work resulting in no alert to the driver and…”
Forward Collision Avoidance · filed Jan 12, 2026
“1. The vehicle experienced a fuel injector failure, which is part of the engine fuel delivery system. This failure appears connected to an open Fuel System Control Unit Software Update Recall (Campaign 2024080006) that has been open since May 2024 but was not performed on my vehicle, despite the vehicle being serviced…”
Fuel/propulsion System · filed Nov 19, 2025
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Technical service bulletins
364 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2022 Mercedes-Benz C 300. The 10 most recent:
This NCU replaces the prior NCU issued on May 15, 2025, and contains additional MY 2023 and MY 2024 vehicles which are highlighted below. In our continuing efforts to ensure the proper performance of Mercedes-Benz…
EW - DMTL · Warranty Program/Extension · issued Jul 31, 2026
Complaint Audible "slurping" operating noise from the fuel tank Cause Conditions: • The fuel tank is around half full • The secondary chamber is almost empty. The suction jet pump suctions up small quantities of fuel…
LI47.10-P-079604 · Service Bulletin/Repair Instructions · issued Jul 27, 2026
Complaint After an "Over the Air" update (OTA), FM or SDARS radio reception is limited; only a few stations are found. Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia…
LI82.60-P-080806 · Service Bulletin/Repair Instructions · issued Jul 17, 2026
Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause…
LI35.30-P-058566 · Service Bulletin/Repair Instructions · issued Jul 14, 2026
Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when…
LI54.71-P-079104 · Service Bulletin/Repair Instructions · issued Jul 9, 2026
Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/…
LI33.20-P-078406 · Service Bulletin/Repair Instructions · issued Jul 8, 2026
Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a…
LI82.60-P-080383 · Service Bulletin/Repair Instructions · issued Jul 8, 2026
Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/…
LI33.20-P-078406 · Service Bulletin/Repair Instructions · issued Jul 7, 2026
Dear Mercedes-Benz USA Dealers, 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 no later than…
PSL-NCU Return Parts 7/3 · Other · issued Jul 3, 2026
We are experiencing intermittent issues when flashing A26/17 - MBUX multimedia system + Instrument cluster (Head unit) when using flashing method ethernet to USB-C. Until further notice, please flash via VCI only.
ANN Interm. Issues Flash · Other · issued Jul 2, 2026
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2022 Mercedes-Benz C 300 has 9 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2022 Mercedes-Benz C 300?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.