i was driving in the highway 50 mph and i was braking and my car slipped in the other line of the highway and almost had and accident !!!! and cars switched off when driving almost had incident!!!! i saw that many people have the say problem like me about rusted component please do something because people are losing their lifes.

- Pelham, NY, USA

The stability control is off in the rear. No warning lights or noise. Other models of this same year make and model have been recalled for something having to do with this. Please help me our family can-€™t afford this rn. We have a beautiful 1 year old that needs rides to dr apt

- West Carrollton , OH, USA

I bought this car for my 18 year old son based on Mercedes reputation for safety and longevity, only to discover that Mercedes has a widely acknowledged issue with rotted sub-frames -- it's a serious safety issue and recalled in other countries. My son was was driving on the highway and the tire exploded. He was so close to being killed because the car went out of control. After getting it towed to my mechanic, he advised me that alignment adjusters were stuck, the subframe was rotted, the lower control arm subframe mounts were broken from the subframe and they were hitting the gas tank. Luckily, the tire only exploded as oppose to the entire vehicle bursting in flames. There were no warning lights or messages, only the feeling that the tires needed to be aligned. We bought new tires and were told an alignment was done from Town Fair Tires, which was untrue. My son's life was in immediate danger. Shame on Mercedes for not recalling this subframe. This is the first of many avenues I am taking to have this rectified and hopefully prevent a tragedy

- Manchester, CT, USA

rear subframe rotted away and car wouldnt move

- Charolette, NC, USA

Rear subframe corrosion discovered by Mercedes Benz Service.105,000 miles on the vehicle. Presents a safety hazard, possible loss of control the vehicle. Frames rots from the inside out, which leads to discovery after vehicle performance and safety is compromised.

- Clinton, MD, USA

Suspension Cross-Member - Mercedes-Benz (204-350-01-41) Driving regularly suddenly fill like the rear passenger side tire moved unevenly, then went to the tire shop, and when they take out the tire see how the rear frame was rusted and broken in a straight line exactly in the middle of the tire hole area. Then start to check used cars to donate that part and All of them have the same trouble in that piece, so I decided to review the frame and discover that the rust begins to damage the opposite side too, so I'm pretty sure is a component failure in metal and materials more than simple rust.

- Des Moines, IA, USA

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving 70 MPH, he heard an abnormal clunking sound coming from the rear of the vehicle. The contact veered to the side of the road. After looking under the vehicle, the contact noticed that the subframe located next to the gas tank was fractured. The vehicle was taken to an independent mechanic where it was diagnosed that the rear subframe had fractured from the weld point. However, the parts to do the repair were not available. The vehicle was not repaired. The dealer was not notified of the failure. The manufacturer was notified of the failure and referred the contact to the dealer. The failure mileage was approximately 190,000.

- Chelsea, ME, USA

Take my car to the dealer and told me my rear subframe is rusted out and is dangerous to drive. Total cost replace they said around $5800. Why there isn-€™t recall for the problem in the USA " I find out there is one in Canada and Germany for this car. What I-€™m supposed to do with the car" Take it to a junkyard because Mercedes-€™

- Anderson , IN, USA

Rear subframe rusted through near connection with control arm. This left the rear wheel connected to the rest of the car only through an axle and sway bar. This is a very common issue on these vehicles, and was remedied through the replacement of the subframe.

- Chicago, IL, USA

The contact's son owns a 2009 Mercedes-Benz C300. The contact stated upon taking the vehicle to the dealer for servicing, he was informed that the subframe was severely rusted. The contact stated that his son then informed him that while he was driving approximately 50 MPH and depressing the brake pedal to come to a complete stop, the vehicle started wobbling significantly. The dealer replaced the subframe, the rear tires, and completed an alignment on the vehicle. The vehicle was repaired. The manufacturer was notified of the failure and referred the contact to the NHTSA. The failure mileage was approximately 87,000. Vehicle has been repaired.

- Saint Charles, IL, USA

My 2009 Mercedes Benz C300 4 Matic sedan fishtails at the rear end when I apply the brakes. I-€™ve owned the car for 8 years. Prior to this happening, I took it to the Mercedes Benz Dealership Repair shop, it was fully inspected on a hoist and fully gone through from bumper to bumper. May 6, 2021, I have a report and a video of the inspection but nothing was revealed related to the undercarriage suspension subframe rusting. Just a few days ago, I had rear brake work done thinking this was the problem and would solve the fishtailing when brakes were applied, maybe one of the calipers was sticking. I also had a 4 wheel alignment, however to my surprise the problem worsened. I called a Local mechanic, who offered to look under my car. After inspection of my vehicle it revealed that the rear undercarriage subframe is completely rotted out. I was advised that it is completely unsafe to drive and to immediately get rid out it to a local salvage yard. My Dream Mercedes still looks new on the outside as I have taken miraculous care of it over the years. Be aware everything that looks good on the outside can be rotted out on the inside. I live in a city that requires highway driving at 70 mph plus, this problem could have ended in a disastrous deadly way. Thank goodness my guardian angel was looking out for me. I checked into repairing the vehicle, the rear subframe is available and with labor the total cost of repair is well over $5000 with labor costing $1632 before tax alone. Mercedes knows this is a common problem and should recall these issues before someone gets seriously injured or killed.

- Concord, NC, USA

the rear subframe @lower control arms right side rust on bracket when put break on the car go to right and make noise!!! the car just have 83.000 miles!! this have re call or not?we d'ont know untill seaching on web side findown couple owner C300 have problem said some

- Liberty Twp, OH, USA

I am 80 years old, and disabled. Gave this car to my son, (age 53). Within a month, he experienced a potential LIFE THREATENING incident with the car. While driving, the car became very unstable and steering was almost impossible. The car was towed to A-1 Auto Repair in Pitman, New Jersey for analysis. This establishment has an excellent reputation for Mercedes-Benz repairs. Upon extensive review the shop advised "customer vehicle is very unsafe to operate and should not be driven"The Invoice states "...During road test vehicle is unstable and steering and braking are out of specification and feels very unstable to operate. Checked vehicle suspension and undercarriage to diagnose rear subframe rusted off body mounts. and is hanging off left rear of body and subframe. Needs extensive repairs to undercarriage and subframe needs replacing with new body mounts.Advised customer vehicle is very unsafe to operate and should not be driven!... There was no warning of this problem. The car has been garaged since purchased. Car regularly maintained by dealership. No mention ever made of RUSTING ! Mercedes states not there problem since warranty has expired.

- West Deptford, NJ, USA

Brought in vehicle for problem when braking, car would pull to one side. Repair shop said rear sub assembly was rusted and they were aware of others like my vehicle with the same problem. Looked up some Mercedes Benz forums online and discovered many of the same problems with the C300 model (2008 and newer) my vehicle is a 2009 Mercedes C300 4Matic. I do live in Minnesota

- Minneapolis, MN, USA

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving at various speeds, the driver-€™s side rear tire inverted into the wheel well due to excessive corrosion. The contact had taken the vehicle to an independent mechanic where he confirmed the failure and informed him that the subframe needed to be replaced. The manufacturer had yet to be notified of the failure. The vehicle had yet to be repaired. The failure mileage was 130,000.

- Cincinnati, OH, USA

The contact owns a 2009 Mercedes-Benz C300. The contact stated while driving approximately 60-70 mph, the vehicle started shuddering and lost stability. There were no warning lights illuminated. The contact stated that as she disengaged the accelerator pedal, the vehicle stopped shuddering. The vehicle was taken to an independent mechanic who diagnosed that the rear subframe was rusted and had fractured into two pieces on both sides of the vehicle, and the lower control arms were hitting the gas tank. The check engine warning light and TPMS warning light were illuminated at the time of the diagnosis. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 120,000.

- Dexter, MO, USA

Driving at highway speeds car felt un-stable/un-safe. When applying brakes at those speeds car felt even more un-stable/un-safe. Took the car to the local tire shop and found the driver side rear control arm broken off. 2 weeks later the passenger side control arm is also broken off. It appears the only fix is to replace the whole rear subframe. Researching this on www.mbworld.org this appears to be a very common problem.

- Battle Creek, MI, USA

passenger right rear subframe broke and full of rust

- Fresh Meadows, NY, USA

Rear subframe assembly rusting, creating safety issue. Discovered 04-22=2021

- Cincinnati, OH, USA

Im the owner of a 2009 Mercedes-Benz C300 4matic sport, which was purchased in 2019. The vehicle currently has about 128,000 miles. It was taken to a local mechanic for inspection and after hearing some clunking noises, especially when braking or turning, they discovered rust, corrosion, and cracking to the rear subframe. Upon further research, it has been discovered that this is a known problem, especially for this year and model of Mercedes. There are many other owners who have complaints online about the same problem. The rear subframe corrosion is estimated to cost about $2500 to repair at local mb dealership. This is a known and comon problem. The car has become a huge safety issue. With so many known cases and obvious safety concerns, mb should resolve this defect and place it under recall. Many owners may not even know they have this problem. Driving a vehicle in this condition could potentially cause injury or fatality to the driver, passengers, and others on the road. I’ve been advised to request a goodwill repair, since there is no recall. Mb should be found responsible for this repair. I’M contacting NHTSA to file an official vehicle safety complaint in hopes that the recall process is started and an order is placed to the manufacturer to issue a recall.

- Coeburn, VA, USA