2010 Mercedes-Benz C300 suspension problems

Filed Sep 10, 2025 · Airbags, Suspension · MA

Due to the corrosion in the rear subframe both side of lower control arms snapped the tires to the car are wearing out due to the corrosion in rear subframe and it’s was also hitting my gas tank if I was to go over any holes which can cause a bigger issue

Filed Sep 10, 2025 · Airbags, Electrical · MA

Got a car from the dealer soon weeks after the rear subframe was so corroded alignment was able to get done and was snapped on both sides airbag light came on doesn’t go away and the rear right brake like started using the fog light as a turn signal

Filed Jan 31, 2025 · Body, Suspension · 63,000 miles · NY

The contact owns a 2010 Mercedes-Benz C300W. The vehicle was taken to the dealer for an alignment. The contact was later informed that the wheel alignment was not fully completed due to extensive corrosion on the subframe. The contact picked up the vehicle and upon investigation discovered that there was a warranty on the vehicle for the corrosion of the subframe. An appointment was scheduled, and the vehicle was taken to the dealer where it remained for two weeks. The contact was later informed that the condition of the vehicle did not reach the warranty standards for repair. The vehicle remained in the possession of the dealer unrepaired. The manufacturer was notified of the failure and the contact was informed that dealers were independently owned and made their own decisions on warranty repairs. The failure mileage was approximately 63,000.

Filed Jun 29, 2023 · Suspension · MA

Rear Sub-Frame Failure almost caused a head on collision at slow speed. Hit brakes and my car fishtailed completely sideways.. - Many many complaints similar to mine on same issue, all on Mercedes C300. Some have reported to this website in hopes for recall and correction by Mercedes. It is extremely dangerous, and expensive to fix. You also do not know there's an issue until too late. Subframe rusting almost from inside out. My control arm fell right out and was hitting the gas tank! I'm thankful to be alive, This needs to be resolved. There are pictures on this forum that look exactly like mine. How sad. https://mbworld.org/forums/c-class-w204/661024-2009-c350-crack-rear-subframe-2.html Thank you for your time. I'm sure you will have many more complaints like this one as chat group considering filing class action if Mercedes does not recall and correct issue. Sincerely, [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Mar 31, 2023 · Suspension · VA

the rear subframe is rusted out and this is a big saftey concern by mercedes benz for 2008-20014 and they know the problem as there are alot of complaints. there were recalls in europe for this and not in USA. This needs to be taken care of by Mercede-Benz.

Filed Mar 17, 2023 · Electrical, Suspension · MD

Rusted rear sub frame that needs to be replaced. Premature rusting that Mercedes needs to repair at no cost. Also, premature battery drain on new battery. Needs to be fixed by Mercedes at no cost.

Filed Jan 29, 2023 · Lights, Suspension · VA

car not able to be driven rear subframe had completely rusted out and rear light housing is burn

Filed Jan 4, 2023 · Suspension · IL

The Rear Subframe of the car rotted out, making the car dangerous to drive. This problem has been identified by Mercedes and IS considered a safety hazard in Canada and Europe. This problem should also be covered here in the USA. Unfortunately Mercedes Benz USA will not offer any help here, instead trying to charge customers more than $7,000.00 for the repair. A frame should last the lifetime of a car, especially when the rest of the car has no to little rust on it. The Subframe is available for inspection, broken suspension puts everyone in and around the car at risk while it is on the road. This issue was inspected and confirmed by a local Mercedes dealer and a local mechanic. There were absolutely no warnings of the issue before it happened.

Filed Oct 27, 2022 · Suspension · MS

The rear subframe of this vehicle is made of faulty materials and has completely rusted out leaving the suspension components which connect to it in danger of failing. The left rear wheel connecting trailing arm has already detached from the subframe. There have been numerous complaints about the 2010-2013 Mercedes C300 W204 rear subframe, many of which share exactly the same failure as my own. It is a known problem with this generation of Mercedes.

Filed Oct 11, 2022 · Suspension · 90,000 miles · NJ

The contact owns a 2010 Mercedes-Benz C300. The contact stated that their wife was driving approximately 60 mph when there was a strange noise coming from the vehicle as well as a shaking sensation. The driver pulled over to the side of the road where the vehicle was towed to their place of work. The vehicle was inspected by the tow truck mechanic who stated that the rear-sub frame had severe rust and was the cause of the failure. The contact had not been taken to the dealer. The vehicle had not been diagnosed or repaired. The manufacturer was made aware of the failure. The approximate failure mileage was 90,000.