Rear subframe , so I went in for an alignment and was quickly notified and denied service due to my rear sub frame being broken. Car is reported to be unsafe by the tire company.no lights etc. My family and I could of seriously been hurt. I can retrieve a statement from dun tire in auburn and from mercedes. They are charging me 641.00 and I'm without a vehicle for 2wks
2011 Mercedes-Benz C300 body problems
49 complaints (10% of all complaints for this car). Typical mileage when it fails: 105,000. 1 crash reported.
- owner complaints
- 49
- of this car's complaints
- 10%
- typical mileage
- 105,000
- crashes
- 1
- recalls
- 0
Which part fails
- Body34
- Frame and members9
- Frame and members: underbody shields2
- Body: door: handle: interior1
At what mileage
Complaints by mileage at the time of the problem.
Mercedes-Benz C300 body problems in other years
Related recalls
No recalls on record for this model year.
What 2011 Mercedes-Benz C300 owners say
Most recent owner complaints, unedited.
Interior door handle becomes inoperative due to breaking of some internal element. This prevents leaving the vehicle. Of concern is that in case of emergency, the occupant cannot exit the vehicle. If power is affected, the windows cannot be lowered which is the only way to exit using the exterior door handle. This is a well known defect of this series of Mercedes Benz to which the manufacturer has not accepted responsibility.
So i was using my car daily for go to work and I was on the highway and they happened a accident in front of me so I have to slow down due to the accident i was going 70 miles per hour and when made a hard break my car turn sideways due to the rear subframe was broke and I dint even notice that the part was rotten they i start looking online and I noticed that the majority of those car come with that factory issue.
Non operating. No tags . No plates.
The subframe has rusted/fallen off. This is incredibly risky as the car cannot be driven safely and it happened without warning. My mechanic said it is not due to any driving incidents but through rust occurring on Mercedes' subframes, which are flimsy. It has been inspected professionally by a mechanic. There are NO warning lamps. This could kill someone on the highway as while braking the car veered left and right. I had small children in the car we all neck pain from the car veering while stopping on the highway. I have taken good care of my vehicle and have all maintenance current. This is a fault with the material on the subframe. For MB: All the subframes are on backorder and are incredibly expensive to fix. I have a video of the damage from the mechanic if needed.
2011 C300 4matic Sport I'm very concerned about the front subframe after going over the invoice and everything that was replaced on the rear subframe due to a recall Mercedes issued. But wait doesn't the whole subframe have severe rust corrosion all throughout yes it does per mechanic/technician. I'm having steering issues while driving the vehicle when applying the breaks the vehicle pulls very hard to the left the whole car swerves to the left very dangerously. After getting it checked out the mechanic/ technician pointed out that the control arm snapped from the Front subframe due to severe corrosion. I'm not understanding how the recall was only for the rear subframe only. The whole entire subframe is severely rusted. Front subframe which may experience premature wear of the front axel carrier and a fracture risk, potentially resulting in sudden loss of steering control. After internal endurance testing determined the front axle carrier supplied for certain Mercedes SUV’s and cars may weaken prematurely. An investigation revealed the root cause of the problem was due to a manufacturing defect in which the parts did not receive proper corrosion protection. My front subframe did not receive the proper corrosion protection. It's available for inspection. It's currently still at the dealership due to being unsafe to drive. I'm having steering issues while driving the vehicle when applying the breaks the vehicle pulls very hard to the left the whole car swerves to the left very dangerously. The problem has been reproduced or confirmed by a dealer or independent service center. The vehicle or component has Not been inspected by the manufacturer, police, insurance representatives. Only Dealer and independent service center did the inspection. No warning indicators no other symptoms, this issue took place around February - March of 2023. When I received the letter about the subframe recall I was excited thinking the issue would be fixed. But No it's unsafe
Like apparently the majority of this model year C300, the rear subframe is completely disintegrated. This is a known issue but Mercedes has not communicated it nor fixed it. I was told, and as the photos clearly indicate, this very likely could have resulted in a catastrophic or fatal accident as the entire rear is corroded. I have photo and video support as well as the inspection from a mechanic.
Good morning. I previously reported incident [XXX] about a subframe issue w/ my 2011 Mercedes Benz C-300. This morning I received a warranty extension from the originally expired 4 years/50,000 mile to 20 years/unlimited miles. The notice says that repairs must be performed by an authorized Mercedes Benz dealership. I had the auto fixed privately and filed the federal safety agency request. I called their CS and was told that I would need to visit a dealership, but to be honest I think that would be fruitless. Can MB be compelled to reimburse me for the cost incurred? Regards, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
The contact owned a 2011 Mercedes-Benz C300. The contact stated that upon entering the vehicle, he noticed that the inside of the vehicle was flooded with water. The contact then stated that he noticed that water had leaked from the sunroof and entered the cabin of the vehicle. The contact stated that several unknown warning lights were intermittently illuminated. The vehicle was taken to an independent mechanic where it was diagnosed that the wiring harness was severely damaged and could not be repaired. The dealer was not notified of the failure. The vehicle was not repaired. The vehicle was deemed a total loss by the insurance company. The manufacturer was notified of the failure and the contact was provided a case number. The failure mileage was 82,242.
My vehicle has been making very odd noises, the steering wheel keeps looking off center and the car is kicking/fishtailing at times without warning. Our mechanic has looked at the car SEVERAL times and finally discovered that the sub frame is completely rusted out and broken. We were told not to drive the vehicle anymore as it is extremely dangerous. After researching about this issue, we found that a class action lawsuit was filed in February 2023 for corrosion/rusting out of frames in 2010-2022 Mercedes Benz models. According to the information, Mercedes is refusing to cover the cost of the repairs and is not returning calls from customers effected by this issue. This information has been reported and added to the class action lawsuit. It was recommended that we report it here as well.
Questions about the 2011 Mercedes-Benz C300 body
Does the 2011 Mercedes-Benz C300 have body problems?
Owners have filed 49 complaints about the body of the 2011 Mercedes-Benz C300, 10% of all its complaints.
At what mileage do 2011 Mercedes-Benz C300 body problems start?
The typical (median) mileage in owner complaints is 105,000 miles.
Was there a recall on the 2011 Mercedes-Benz C300 body?
There is no recall for this problem on this model year.
What year does the Mercedes-Benz C300 have the most body problems?
The Mercedes-Benz C300 model years with the most body complaints are 2015 (61 complaints), 2013 (58 complaints) and 2012 (55 complaints).
Other 2011 Mercedes-Benz C300 problems
Airbags 250Suspension 60Fuel system 44Electrical 43Steering 34Lights 20Brakes 13Engine 11Transmission 10Seats 4Acceleration 3Driver assistance 2Seat belts 2Wheels 2Tires 1Visibility 1
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