2014 Mercedes-Benz E350 suspension problems

Filed Jul 24, 2026 · Brakes, Driver assistance · OH

The failure was when I hit the brakes hard in an emergency braking situation and the car very eratically and violently veered to the left. There was no warning and thank God there was no car coming in the left lane otherwise it would have been a broad side hit. I was doing 55 mph. We had the car inspected at a local shop and the left rear tie rod link was completely severed from the suspension sub-frame because of rust. The brake lines above the sub frame were also severely rusted and leaking. I called my closest dealer and they said the rusted frame replacement is covered under extended warrenty but not the brake lines which had the same issue, severe corrosion and a potential catostrophic failure! Mercedes Road Side Assistance was called to tow the car 70 miles to the closest shop.

Filed Jul 21, 2026 · Body, Steering · NJ

While braking from highway speeds or any other speed, the vehicle becomes unstable and pulls to the left, making it difficult to maintain control. During hard braking, the vehicle does not track straight and requires steering correction to remain in its lane, creating a significant safety hazard. To diagnose the problem, the vehicle was inspected by an independent mechanic. An alignment was performed, and the suspension and braking systems were inspected. The mechanic determined that the rear subframe has severe rust and corrosion. The rusted rear subframe is available for inspection upon request. Despite the alignment and inspection of the suspension and brakes, the unsafe braking behavior remains. There were no warning lights or messages indicating this condition before it was discovered. The problem has been reproduced multiple times under similar braking conditions. This condition puts the driver, passengers, and other motorists at risk because the vehicle can become difficult to control during braking, particularly at highway speeds or during an emergency stop. Based on the mechanic's inspection, the severely corroded rear subframe is the source of concern and should be investigated as a safety-related defect. I have also contacted Mercedes-Benz USA regarding this safety issue and requested assistance, but I have not yet received a response.

Filed Jul 8, 2026 · Brakes, Fuel system · OH · fire

Vehicle subframe corrosion (manufacturer extended warranty offered). Rear brake lines corroded/leaking. Vehicle leaks fuel; steel fuel line corroded. Vehicle has about 105k miles. Minor fire started when yard maintenance came in contact with fuel saturated ground where vehicle had been parked/moved out of the way just prior. With rear suspension subframe springs corroded, vehicle bottom can contact road surface while driving, scraping steel exhaust with fuel present. EXTREMELY dangerous. Local Sunbury Ohio Mercedes dealership inspected then offered subframe replacement. Stated it was leaking fuel and not hydraulic fluid we originally thought. Brake, suspension and fuel line corrosion repairs were quoted in excess of $4,000, which was a "great deal" according to them "because the subframe would already be removed and would make it much easier."

Filed Jan 19, 2025 · Steering, Suspension · CA

Car unexpectedly swerves while driving!!

Filed Nov 21, 2024 · Suspension · RI

As I went to have my vehicle inspected, the mechanic advised me that it could not be inspected, that the car is totaled because the rear subframe is all rotted and the brackets holding the trailing arms were broke off and said that this was a common problem with these vehicles.

Filed May 26, 2024 · Brakes, Electrical · NY

Suspension Rear Sub-frame rusted through, rear Lower control arm disconnected from rear sub-frame due to rust/corrosion. It is available for inspection. While braking at highway speeds the car fishtailed and I almost lost control of the vehicle. This has not been confirmed or inspected by any service, Insurance or Police entity. No warning lights, messages etc. Brakes: Rear brake lines are severely corroded in the same area as the rear sub-frame. Electrical System: Battery continuously discharges and is dead after 5 hours.

Filed May 2, 2024 · Body, Suspension · 110,000 miles · RI

The contact owns a 2014 Mercedes-Benz E350. The contact stated that while the vehicle was at an independent mechanic for an oil change, the contact was informed that the rear driver's side control arm was severely corroded and had detached from the subframe. The contact was also informed that the failure caused premature tire wear on both rear tires. The vehicle was then towed to the dealer, where it was determined that the subframe and rear driver's side control arm needed to be replaced. The vehicle was not yet repaired and remained at the dealer. The manufacturer was made aware of the failure. The failure mileage was approximately 110,000.

Filed Jan 11, 2024 · Body, Steering · MD · crash · 1 injury

On 11/24/23 Mercedes Benz had replaced my subframe which was part of a safety recall. When I arrived home after picking up my vehicle, there was a loud bang from under the vehicle. I immediately called the service department and told them about what happened and also complained that the steering wheel was cocked to the left and pulling in that direction. My service advisor John advised me to bring it back the next day which I did. They never told me what caused the loud bang, but they did say another front end alignment was done. The vehicle still continued to pull and the steering wheel was still off center. On [XXX] I took my car to Mr. Tire for a tire rotation because the car continued to sway and jolt when going over bumps. It also made a popping noise when making a sharp turn. Then on [XXX] as I was driving, the car pulled or slid to the left. In order to keep from crashing into another vehicle, I pulled the wheel right causing me to run over the medium and almost crashing into a building. I was extremely shook up and in disbelief. Has this type of thing ever happened to anyone else before after the subframe was replaced? INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Apr 10, 2023 · Suspension, Wheels · RI

The rear subframe of my vehicle failed at the lower trailing arm mounting point (passenger side). This resulted in the car swerving to the right when I applied pressure to the brake pedal, which was worse at higher speeds. This had been getting progressively worse for a few weeks until I almost spun out on the highway while braking. The next day, I randomly got a flat tire on the rear right side while driving at 30MPH near Valley Street in Providence. There were no warning lamps or messages prior to the failure. I immediately replaced the tire and brought it to Midas on Mineral Spring Ave in North Providence, RI, so that they could inspect the vehicle. They discovered that the rear subframe was almost completely disconnected at the lower trailing arm mounting point due to excessive rust that had wore a hole in the part from the inside-out, which was not visible at the time of the last inspection. Midas immediately informed me that the car was unsafe to drive more than the distance back to my house. They also informed me that 3 tires needed to be replaced, including the flat, as a result of excessive wear on the inner wall and the inner edge of the tread. None of these three tires had reached the wear bars yet, and Midas confirmed they would not have had to be replaced if not for the subframe defect. I had the car towed to Mercedes-Benz of Warwick after Midas replaced the 3 tires (RL, RR, FR) because I heard that Mercedes had recently extended the warranty period for rear subframes (only months after a class action lawsuit was filed about the issue). Mercedes inspected the vehicle and confirmed the issue, and is currently replacing the rear subframe under the new extended warranty program for rear subframes. However, they refuse to reimburse me for the other issues directly caused by the corroded rear subframe (which they admit liability for when they replace the part free of charge), stating they have been instructed by corporate that related issues are not covered.

Filed Feb 15, 2023 · Suspension · MD

The vehicle was inspected during an alignment at a dealership. The sub-frame has rotted out. The car was swaying to the side. I believe this car is dangerous to drive. The repairs are around $5000.00 dollars. There should be a recall on this Mercedes Benz E-Class 350 SUB-FRAMES. It is not safe to be on the road. The dealer is no longer around. The manufacture of this car and so many other Mercedes Benz with the ROTTEN RUSTED SUB-FRAMES should be held responsible to pay for the damages and or replacements. Before someone DIES on the road. A recall for this vehicle needs to be done ASAP! Please HELP! I have a picture of the rotted sub-frame and paperwork .Not sure how to upload Why are other countries recall for free and not the USA?