Rear subframe broke off.
2011 Mercedes-Benz C300 body complaints
Page 3 of 3: complaints 41 to 49 of 49, newest first, as owners wrote them.
2011 mercedes benz c300. Constituent writes regarding subframe corrosion safety recall on vehicle. The consumer stated the manufacturer was notified, but would not take resposibility for the failure. The manufacturer offered a good will incentive of $500.00 towards a used vehicle or 1000.00 towards the purchase of a new vehicle.
The contact owns a 2011 Mercedes-Benz C300. The contact stated while driving 25 MPH, the contact was going around a corner when he noticed a vehicle in front. The contact depressed on the brake pedal and the vehicle violently jerked and stop. The contact stated that the steering wheel was leaning towards the left. The contact was able to drive the vehicle to his residence. The following day the contact took the vehicle to an independent mechanic who inspected the vehicle and diagnosed the failure as a fractured and detached rear control arm due to corrosion of the undercarriage and subframe. The vehicle was towed to a local dealer to be repaired however, the contact declined the repair due to cost. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 82,000.
On July 1, my daugther who is driving the car since about 8 months noticed a strange noise coming from the rear of the car. Since I was in Europe at that time I could not give her any assistance. On July 16 we both took a drive to Rhode Island to visit a college. I was the one driving, and I could also hear the noise coming from the rear. On the highway there was a back-up developing and I had to hit the brakes a littler harder. In doing so. the car was very unstable and it look like if the rear was going to overtake the front of the car. I was very scary even for myself who is a long time experience driver. After returning home I took the car to a mechanic and have him look at it. The resulting diagnosis revealed that the subframe was completely rusted out and was about to get disconnected from the under carriage of the car at any moment. The mechanic had a hard time to find a replacement part, and was finally able to locate an OEM subframe in California, the only one in the US. The price for the part alone was $1,500. I had no choice other than to have the car repaired at the mechanic since it was at that time undrivable. The total repair was almost $3,200. I took 2 pictures of the replaced subframe (see attached). The car is a 2011 MB C300-4-matic with just 100,800 miles on it. The was purchased used, with about 12,000 miles, in Febr. 2012 from Mercedes Benz of Westford, MA, which had used the car as a loaner/company car. The car was well maintained, used up until 2020 by my daughter's mother. She then bought herself another, newer C300 (2017 model) and decided to gift her older car to the daughter instead of trading it in. We thought, we knew a lot about the car and considered it a low risk transfer for a new, still learning driver. I will also file a formal complaint with Mercedes Benz if I have figured out the correct contact point. The internet shows, other people have experienced similar situations. And eventually, see also your ID-# 10504684 and 11023618.
The contact owns a 2011 mercedes benz c300. The contact stated while driving, there was a clunking sound coming from the rear of the vehicle. The vehicle was examined by an independent mechanic who discovered that the passenger's side rear sub-frame had cracked and separated. The cause of the failure was not determined. The vehicle was not yet repaired. The local dealer was notified of the failure. The manufacturer was not yet contacted. The failure mileage was 138,000
Rear suspension control arm rusts off of the subframe. No other rust on the car. During braking the car steers hard to the right almost causing an accident
Tl* the contact owns a 2011 mercedes-benz c300. While driving 35 MPH, the rear driver's side of the vehicle veered to the left. The contact immediately applied the brakes. The contact drove to an independent mechanic who diagnosed that the rear driver's side subframe and driver's side control arm needed to be replaced. The vehicle was repaired. The dealer was not contacted. The manufacturer was made aware of the failure and did not assist. The failure mileage was approximately 60,000. *as
This is a well documented accident as it involved a police chase of a felon who ran a red light at approximately 50 MPH. My car was hit on the left front side and is deemed totaled. No air bags deployed in my vehicle and I required emergency transport to the local hospital emergency room. This also involved a police shooting incident with the death of the other driver. The vehicle is pending towing to a salvage yard.the primary concern is a question of defective air bag deployment and future potential injury to others.
The passenger side of the car got flooded with water. The dealership found that the leak was from the right side sunroof drain and that they would have to remove the headliner and passenger side interior carpeting to access the affected areas. The $795 estimate ballooned to $1600 when they said that the seating would have to be removed to remove the entire carpet because there was more water that had gotten into the car than they originally thought! This sounds like a design defect in this vehicle! This could be dangerous with the electric power and heated seats!
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