2013 Mercedes-Benz C300 suspension problems

Filed Apr 1, 2025 · Suspension · IA

Recently my Mercedes has been pulling and swaying to the side while breaking even at low speeds.Yesterday I got my 2 front tires replaced and asked them to take a look at what could be causing my rear end to pull.When I returned to pick up my car they informed me my rear subframe was completely decayed/rusted through and not safe to continue driving.

Filed Sep 16, 2024 · Body, Brakes · IN

On several instances of breaking, my 2013 Mercedes Benz C300 pulls hard to the right and becomes very unstable. I assumed it was a brake problem by the way the car drove. I took it to my mechanic, who immediately identified the rear subframe had rusted so much that a control arm had broken loose from the subframe. The rear subframe acts as a foundation for the rear suspension and holds the backend together. Fortunately I was able to get this diagnosed prior to a serious accident. The car gets very unstable, especially at higher speeds, when braking. There are no warning lights that will catch this. This problem absolutely places both passengers and other cars on the road at risk of a collision when braking, especially on the highway at higher speeds. I am going to contact a local Mercedes Benz dealer to evaluate replacement of the damaged parts to ensure the car is safe to drive following repair. Based on the links below, it sounds like a known issue at Mercedes Benz. I was never notified of any issues or from prior service visits, or via mail notice from the manufacturer. My mechanic was shocked, to say the least. Hoping MB will take care of this dangerous problem without hassle. See: [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Feb 27, 2024 · Body, Suspension · NY

Broke rear subframe while driving. Made it home discovered the left rear suspension is almost completely detached from the vehicle. Researched the problem and discovered it’s a known issue and a warranty extension has been provided for some vehicles including some models of my particular year and model but after contacting Mercedes is seems mine is not.

Filed Jan 16, 2024 · Suspension · WI

Drivers side lower control arm was rusted off rear subframe causing vehicle to be inoperable.

Filed Nov 28, 2023 · Suspension · VA

The rear subframe is cracked. This puts myself at risk and others if vehicle is involved in an accident. The problem has been confirmed by two independent service dealers. The vehicle has only been inspected by independent dealers. No warning lights.

Filed Sep 3, 2023 · Suspension · MA

Excessive rust has caused a separation of the lower control arm from the rear sub frame. From Google searches this appears to be a common safety defect in the manufacturing of these vehicles. Control arm separation causes drive ability and stability issues that can lead to loss of control of said vehicle leading to accidents that can cause serious bodily injuries including death. Why hasn't Mercedes been forced to recall the affected vehicles in the United States as they have been in several other countries?

Filed Aug 1, 2023 · Suspension · NY

Rear subframe rust through, affecting the function of control arm. When braking mildly caused the forward motion of vehicle to swerve into oncoming traffic. It has been reported and is in their possession. There was a small clicking noise like a possible loose shock absorber, a few times in the past month. Then two days ago, the sound became stronger including a clicking noise like two pieces of sheet metal torn passing each other. Upon personal inspection I found severe rust through on the subframe on the left side in front of the left drivers side rear tire. Corporate has sent a letter extending the warranty for that part. Photos can be provided.

Filed Jun 22, 2023 · Body, Suspension · NJ

Rear Control Arm Broke off of the rusted Rear Sub Frame assembly which was confirmed and inspected by my mechanic.

Filed May 1, 2023 · Suspension · PA

Purchased said vehicle from Rahal Mercedes Benz (Wexford PA 15090) in 9/2021. Used. Took in for PA inspection in 10/2022 (to Rahal service dept). Mechanic noticed rear subframe was rusting (I was not aware of this until this point; was never disclosed to me by Rahal in their printed pre inspection vehicle repost; I have this document). Told me would need re-placed sometime in 2023. Never mentioned a recall. I have not received any recall. Prove from MB. Conversation with said mechanics e railed I would have to pay for this repair out of pocket. This is a major safety issue. MN should 100% cover the cost/all costs of the subframe and any issues caused by said subframe.

Filed Mar 21, 2023 · Suspension · NH

Car wouldn't pass inspection because of a rotted subframe. I had to pay $3k to have it replaced.