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ProblemsByVin Index / 2012-MERCEDES-BENZ-C-CLASS / COMPLAINTS
Full complaint record · NHTSA

2012 Mercedes-Benz C-Class owner complaints

584 complaints filed with NHTSA on this vehicle . Showing the 300 most recent — grouped by category for scanning.

airbags 8 complaints shown

307 total in this category · critical · avg repair $1,100 · see airbags cluster analysis →
12/27/2017 ODI #11056780.0

Tl* the contact owns a 2012 Mercedes benz c300. The contact received notification of NHTSA campaign number: 17v017000 (air bags) however, the part to do the repair was unavailable. The contact stated that the manufacturer exceeded a reasonable amount of time for the recall repair. Mercedes-benz of buckhead of buckhead, georgia dealer was made aware of the recall and stated that the parts were unavailable. The manufacturer was not made aware of the issue. The contact had not experienced a failure. VIN tool confirms parts not available.

12/27/2017 ODI #11056881.0

No resolution since january 2017, I am an active duty soldier often afraid to continue driving for fear of faulty airbag and the aftermath of bodily injury that could potentially occur to me and others.

12/26/2018 ODI #11163557.0

Tl* takata recall. The contact owns a 2012 Mercedes-benz c250. The contact received notification of NHTSA campaign number: 17v017000 (air bags). The dealer was not contacted. The manufacturer was contacted and confirmed that parts were not available. The contact had not experienced a failure. VIN tool confirms parts not available.

12/24/2017 ODI #11056293.0

I have contacted the Mercedes benz dealership twice since the airbag recall. I was told both times that they do not have the parts to replace my recalled airbags. My safety is in danger until the parts are made available. That is my complaint.

12/22/2018 ODI #11163079.0

Takata recall. Dealership has no remedy to repair defective airbag for my vehicle.

12/20/2019 ODI #11290364.0

Tl* takata recall. The contact owns a 2012 Mercedes-benz c250c. The contact received notification of NHTSA campaign number: 17v017000 (air bags). The contact called Mercedes-benz of san antonio at 210-920-3237 (located at 9600 san pedro ave, san antonio, tx 78216) and was informed that the parts were not available. The manufacturer was made aware of the issue and was not able to confirm when the parts were to become available. The contact had not experienced a failure. Parts distribution disconnect.

12/20/2019 ODI #11290430.0

Cannot get local dealer to replace defective passenger side airbag. Keep getting a run around on part availability .

12/20/2018 ODI #11162779.0

Takata recall: Mercedes has had this open recall on my vehicle for a long time, I am loosing income not being able to rent out my vehicle. I have asked Mercedes for compensation or help with no avail.

suspension 2 complaints shown

67 total in this category · moderate · avg repair $900 · see suspension cluster analysis →
12/30/2021 ODI #11445555.0

The rear subframe rusted through causing mounting point of the torque link to fail. As a result, the car looses control when braking going sideways. Luckily, I discovered it when testing brakes after pad replacement in a safe setting. To my understanding, there are many other W204/W212 cars affected in the US with that issue. Mercedes so far does not want to take responsibility and recall cars for this issue which is a huge concern.

12/28/2022 ODI #11499206.0

Sub Frame broke from rust. Mercedes Benz has acknowledged the issue in Europe and repaired/replaced the part at no charge. Numerous problems and complaints can be found on line indicating that we, the car owner must and can complain to Mercedes for partial or complete support on the repair. But they do not acknowledge the problem in the US.

body 2 complaints shown

38 total in this category · moderate · avg repair $1,500 · see body cluster analysis →
12/23/2022 120,000 mi ODI #11498631.0

The contact owns a 2012 Mercedes-Benz C300. The contact stated while driving 30 MPH, she started hearing an abnormal sound. The contact stated no warning light was illuminated. The contact took the vehicle to the local dealer, where it was diagnosed with needing the rear subframe to be replaced due to severe corrosion. The vehicle was not repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 120,000.

12/21/2023 95,000 mi ODI #11561346.0

The contact owns a 2012 Mercedes-Benz C300. The contact stated that the front driver's side interior door handle was fractured. The contact was unable to open the door from inside the vehicle. An independent mechanic inspected the vehicle and referred the contact to the manufacturer for assistance. The dealer was not notified of the failure. The vehicle was not repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline for assistance. The failure mileage was approximately 95,000.

visibility 1 complaint shown

4 total in this category · moderate · avg repair $350 · see visibility cluster analysis →
12/31/2018 35,000 mi ODI #11164207.0

Tl* the contact owns a 2012 Mercedes-benz c250. While driving approximately 65 MPH, a sudden loud, booming sound was heard as the sun roof exploded. There were no injuries. The vehicle was taken to Mercedes-benz of waco (1625 n valley mills dr, waco, tx), but the cause of the failure could not be determined. The manufacturer was not notified of the failure. The VIN was unknown. The failure mileage was 35,000.

electrical 1 complaint shown

22 total in this category · severe · avg repair $850 · see electrical cluster analysis →
12/30/2024 143,000 mi ODI #11633107.0

The contact owns a 2012 Mercedes-Benz C250. The contact stated while the vehicle was parked, the anti-lock theft prevention feature failed to function as intended. The contact stated that the steering wheel was seized, and the vehicle failed to start. The vehicle was towed to the residence. The contact was informed by the tow truck driver that the failure was due to the electronic lockout system. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 143,000.

powertrain 1 complaint shown

5 total in this category · moderate · avg repair $2,500 · see powertrain cluster analysis →
12/30/2020 117,000 mi ODI #11385548.0

I have been having issues with my vehicle since I purchased it. Starting with me not having enough power from a start, in an attempt to gain enough power to drive at a safe speed from the start, as if the vehicle lags & no matter the gasoline or service, the problem never corrects. When I'm trying to gain speed to maintain with the flow of traffic safely the vehicle lags notably before gaining speed. I'm now having to replace the engine bc the oil coolant hose burst while I was driving on the highway with my child in the car. My check engine light activated but the only notice displayed on the dash was the engine coolant when it was low. When the hose burst while I was driving about 60mph I heard a pop sound under the hood, saw smoke coming from the exhaust, then a clanking noise under the

engine 1 complaint shown

58 total in this category · severe · avg repair $3,100 · see engine cluster analysis →
12/27/2017 48,304 mi ODI #11056762.0

When starting up the vehicle make a terrible noise that last for 3-4 seconds before it goes away. The vehicle was verified by a Mercedes technician and the diagnostics came back stating an issue with the "camshaft adjusters (internal fault)". I was told this condition will get worse and finally engine will stall and major damages will happen. Worst scenario could produce bent valves and will require a major engine overhaul with just 48,304 miles on it. Apparently, c250s are having this issue and customer are paying the consequences for a defective product. By the way, engine has been perfectly maintained with mobil 1 (ow-40) and original filter every 5,000 miles instead of the 10,000 miles interval recommended by the manufacturer. This condition could lead to a major failure while driv

brakes 1 complaint shown

13 total in this category · severe · avg repair $450 · see brakes cluster analysis →
12/21/2020 90,000 mi ODI #11384474.0

At about 40,000 miles the parking brake began sticking and was difficult to release. This was replaced under warranty. It began happening again . I spoke to the Mercedes usa and they said I would have o pay to replace it. I believe this part is defective.

Showing 300 of 584 total complaints. The full federal record is available at nhtsa.gov/vehicle/2012/Mercedes-Benz/C-Class#complaints.
Source: National Highway Traffic Safety Administration (NHTSA) owner complaint database. Last synced 2026-06-14. Complaints are owner-submitted and unverified — the existence of a complaint is not proof of a defect, but a pattern of complaints around the same component is a signal worth weighing. Verify any specific filing at nhtsa.gov.
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