2010 Mercedes-Benz C300: ball joint or control arm failure

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 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 Jun 21, 2022 · Body · OH

Rear subframe corrosion hast rusted through and the subframe is no longer attached to the lower control arm car has only 56k miles this has been recalled in Canada and the issue needs to be addressed in the us it is a safety issue

Filed Nov 23, 2021 · Suspension · IL

The rear subframe rusted so bad that one of the control arms detached from frame i think this is a risky and i seen lots of those complaints in YouTube I think there should be a recall from mercedes benz of usa .

Filed Aug 14, 2020 · Suspension · 165,000 miles · MD

Rear subframe rusted from inside out causing driver side lower control arm mount to break free from subframe. Traveling approximately 40mph but proper evasive maneuvering allowed for safe stopping without incident.

Filed Jul 8, 2020 · Suspension · 158,000 miles · PA

I was told today that my car is unsafe to drive because the subframe has rusted so severely that the control arms for both rear wheels have detached from the subframe. A web search (https://www.carproblemzoo.com/mercedesbenz/c300/suspension-problems.php) indicates that my problem is not unique. During a drive yesterday evening, the top dead center (tdc) of the steering wheel started out as it should at the 12:00 position. During the drive, the tdc shifted to the 10:30 position. This morning, as my wife and I drove the car to be inspected, the tdc was at 11:30. I always brought my car to the mercedes dealership, where I purchased the car, for its scheduled a- and b-services. We have never been in an accident in this car. During winter, I frequently took the car to touchless car washes and paid extra for the under-body wash to remove road salts. I am flabbergasted that a 10-year old mercedes should develop such a serious rust problem on a critical structural part that it fails completely. My 15-year old range rover has LED a much more demanding life, and it's doing just fine. As of this morning, my c300 has 158,000 miles.