The item that has failed is the rear subframe of the vehicle. It is available to be viewed. It is still on my car, as it has not yet been replaced due to the cost. When braking, the front of the car will pull left and back feels like it is pulling to the right, as if you are spinning out. The problem is that the subframe is rusted out at under 100,000 miles. I just hit 100,000 and it has already broke completely. I was told by the dealership that this is a safety concern where the back of the vehicle could fall off, there words, not mine. I have been in contact with Mercedes Benz corporate and they said since I am past 50,000 miles, there is nothing they can do. There were no safety warnings, recalls or lights in the car that has given me any indication there was a problem until it broke and I felt it during breaking. This issue seems to have happened to many individuals driving the Mercedes C300, as it is not just a small number. Currently, MB has this backordered due to the number of cases. They should be responsible for a recall for the price paid for their vehicles.

- Hebron, KY, USA

Vehicle is 9 years old with 69825 miles and the Rear drivers side Subframe rusted out and broke off the vehicle. This is a common problem and is a recall in both Europe and Canada and needs to be recalled in America, this is very dangerous and life threatening as I googled and there are hundred similar stories.

- Toms River, NJ, USA

My Mercedes C300, 2013, 46,123 miles has 2 holes in rear sun frame, rendering it unsafe to drive. Dealership and MB will not acknowledge this is a common problem with this make/model. Recall for very same problem in Canada & other nations has been issued but not in USA. Dangerous situation!!! $5,200 to repair! On a premium brand auto with less than 50,000 miles. Please help!

- Washington, PA, USA

Vehicle inspection during oil change has revealed that the vehicle has a broken rear subframe. Apparently this is a common problem in Mercedes C300 vehicles, which are subject to recall for this issue in Germany and Canada. Vehicle report here (with video of broken subframe): https://xoxocar.com/inspection.aspx?inspectionid=9e225031-77b5-4304-8ec1-a10c859b90f0&print=true

- Vienna, VA, USA

Car with just 130,000 miles needs significant subframe and related parts replaced. There are countless discussion boards of similar failures across Mercedes Benz car lines. The estimated cost of repairs at the dealership exceeds $5000 just for subframe work. When braking the car veers to the left and the right end tries to swing around. Again, this is noted on multiple discussion board. MB has consistently demonstrated negligence in addressing this as service advisers state this is not uncommon and is seen often. A recall/replacement is warranted.

- Charlottesville, VA, USA

My rear sub frame is rusted and unsafe to drive.. There seems to be a recall in Canada (I think) but not in the US. this is an unsafe issue that needs to be fixed. All local repair shops are aware of these and have several that need repaired as well.

- Independence, KY, USA

2013 Mercedes Benz C300 4dr AWD. Corrosion of Rear Sub-Frame (aka "Rear Axle Carrier" or "Suspension Cross Member") (New Part #: 207-350-97-02. Old Part #: 204-350-01-41 + other numbers). Car experienced erratic behavior under all braking scenarios. Extremely dangerous behavior under heavy breaking (65 mph to 25 mph). Life threatening severity of issue. 2 personal experiences. 1: Stopping at a yellow light in a quick fashion (55-0 mph, no abs required), car pulled hard to left and almost pulled me into curbing on left hand side. It felt like the rear end was on ice and was going to do a 180 partial spin. 2: Pulling off a highway into a turning lane and braked hard to slow down for right hand turn (65-15 mph). Car pulled about 8 feet left and almost put me back into full speed traffic. Same uncontrollable "on ice" feeling. I was on a road trip and had car towed to independent mechanic in the town I was visiting. He found holes throughout rear sub-frame member on drivers side and passenger side. Mounting points for suspension components were not structurally sound. He said I was lucky the control arm didn't break loose and puncture the gas tank. Corrosion was limited to sub-frame. The rest of car was "Nearly Perfect" in the words of the mechanic. Called Mercedes Corporate and they advised towing car to local MB dealer for inspection. MB Lancaster determined car was unsafe to drive. I am currently pursuing a good will repair case that has been initially denied. Parts are back ordered for 10+ weeks. I've called several dealers to source the part and nearly dealers have orders placed to Germany for these sub frames. Repair + alignment is approximately 4k USD. In 2018, Mercedes has issued Official Service Information Supplemental Notes (SI35.00-P0009A) to technicians to look for premature corrosion issues. This is free of charge replacement in UK and Germany already and a recall in Canada. US needs to catch up quick before death occurs.

- Sterling, VA, USA

I have a 2013 Mercedes Benz C 300 sport, and I felt my car shaking if I drive above speed of 35-40. Took it to Mercedes Benz dealership is Rockville center NY, they told me it is my subframe, which cost parts $2496 and labor $3704, Total $6196. Sad part is that my car is in excellent condition and Mercedes refuse from even helping to reduce cost.

- Valley Stream, NY, USA

While driving normal highway speed and braking suddenly the car violently pulls to left. Same occurs when driving normal city traffic. Good afternoon I am following up on a major safety issue #11453988 concerning a 2013 C300 Mercedes. I reported this a few weeks ago as this safety defect can cause personnel injury when the defective part fails. As noted earlier during normal braking the car pulls hard to left or right. With normal highway speed driving and emergency braking the car will violently pull left or right possibility into oncoming traffic and or fixed objects. Please reply with update into this major safety defect concern. PS the part number in question has been changed from number 2043500141 with new number 2073509702. This part is not available in the US currently and has a lead time of 30 days from Germany. With the long lead time and the need to travel to work it is a major safety issue that can be avoided. Thanks George

- Mahwah, NJ, USA

The contact owns a 2013 Mercedes-Benz C300. The contact stated that the air bag warning light was illuminated on the instrument panel. Upon taking the vehicle to the dealer, they discovered corrosion underneath the rear subframe. The corrosion caused 2-inch sized holes to be formed on the passenger-??s side of the rear subframe. The dealer also discovered corrosion on the wire of one of the seats which resulted in the air bag warning light being illuminated. The manufacturer had been notified of the failure and agreed to cover 50% of the cost for repair of the vehicle. The vehicle had yet to be repaired and remained in the possession of the dealer. The failure mileage was approximately 119,000.

- Mc Lean, VA, USA

The Rear subframe rusted and broke off, car was not stopping safely.

- Hastings-On-Hudson, NY, USA

I bought my c300 Mercedes-Benz in 2013 from the Euro Motorcars dealership in Germantown, MD. On about February 15, I heard some clanking/banging in the rear of my car. I thought it was the rear driver side break. I took the car to my local mechanic and he indicated the rear sub-frame had rusted though and it was banging on the gas tank (see attachments). Very dangerous, I should not drive.

- Rockville, MD, USA

Sudden steering pull when braking. Mechanic found rotten left rear suspension cross member.part number 2043500141 Mechanic reports very Common issue with this model. Mercedes Benz is aware but will not repair or supply replacement parts. Note the replacement part is not available in US currently. Stuck with unsafe auto lacking support from Mercedes Benz. Some one is going to be injured / killed as the manufacturing defect shows rust failure from inside out and not detectable during routine maintenance. Hard braking pull is first indication that the defective part failed. Should this occur at highway speed the auto can flip resulting in major injury or death.

- Mahwah, NJ, USA

2013 MB C300 4matic with 63K miles. It was taken to an MB dealership for yearly maintenance (Service A). A certified maint. tech provided me with an inspection video of the underneath of the car outlining an issue with the rear subframe. The right side has a hole rusted through it and the left side is rusted, but not rusted through...yet. Replacement is recommended, as it will not pass state inspection in it's current condition because it's a safety issue. They also advised that they have seen a few instances of this problem and have contacted Corporate. This is a 8-9 yr. old vehicle with low mileage and has had consistent maintenance at an MB dealership. The car was inspected in May 2021. There was no indication given at that time, that the subframe was rusting, could be a safety issue, and result in a replacement totaling over $5K. Once the information was provided during the recent service, I did research and found that this is an issue going back a few years. Some owner's have had this part break while driving causing a dangerous and potential life threatening situation. I then contacted MB customer advocacy to go over the issue and cost involved. I was advised that MB does not assist in repairing the vehicle. However, they would investigate and get back to me. I supplied information to them on 2/9/22 and am waiting for a response. I purchased this vehicle because of the quality of the brand, MB's reputation and longevity. I will not drive the car due to its diagnosis and other owner evidence that the subframe could potentially break while I am driving. It is unacceptable that a major structural component could fail on a vehicle of this age. This requires a recall of the subframe and MB's responsibility for the cost of the repairs.

- Bethlehem, PA, USA

This is a 2013 Mercedes-Benz C300 4matic Luxury model, with about 110K miles. It started making beating noise and pulling to the right when brakes were applied. Driving became quite dangerous especially at a higher speed, and the driver had to steer the car very carefully to compensate the fish-tailing. It also affected braking as well. There was no warnings from the car, but the noise, the fish-tailing and uneven braking were really bad. A M-B certified mechanic inspected the car, and identified the problem as the rear sub-frame that has rusted out, and lost 1 of the 4 anchors. The whole sub-frame will have to be replaced. Estimated costs will be USD4k-5k, and may take a month due to shortage of parts. For a major structural part on a premium-brand car to rust, within 10 years, to the extent that driving is rendered dangerous, it is not acceptable. A safety recall should be issued on this, and M-B should bear the costs.

- Columbus, OH, USA

While driving at low speed, there was a sudden imbalance in the steering wheel and the car started to pull to the right. The problem was more exaggerated while breaking with significant fishtailing. I immediately took the vehicle to Mercedes-Benz dealership who diagnosed the problem as severely rusted subframe with corrosion and structural instability especially near the rear passenger side wheel. The car is Mercedes C300 4Matic 2013. The incident happened on November 24, 2021. Mileage is 77,000 miles. Should I have waited longer, there was a very high probability of complete breakdown of the subframe which would result in rollover posing high risk of injury and death to the driver and other people on the road.

- Jacksonville , FL, USA

Vehicle subframe has rusted through and parts of left rear suspension components are free, and one is about to poke a hole in the fuel tank. The right side is about to do the same. Everyone-??s safety is at high risk with this problem. The car abruptly pulls to the left when applying the brakes as well as causing the car to shimmy on the interstate. I took it to my mechanic who to.d me what has happened, and I had it towed to the Mercedes dealership who confirmed the problem. When you search the internet you find a highly alarming number of people who have this same problem on 2009-2014 C300 models please do something before someone gets killed.

- Franklin, OH, USA

Mercedes C300 2013, bought used in 2014 at approximately 7300 miles on the odometer, have always done the repairs and maintenances at Mercedes dealerships. In either late 2019 or early 2020 at around $50,000 miles on the odometer, the dealer informed me that the "rear sub frame is rusted and has hole in it" and recommend for the replacement of the rear sub frame, they even refused to pass my state safety inspection because of it. In October 2021 at approximately 67,000 miles on the odometer, it was determined that it was the time for the sub frame to get replaced at a price tag of more than $8000. Upon calling Mercedes corporate customer service and complaining to the dealership, Mercedes is willing to offer so called "Good Will Assistance" but I am still responsible for more than 50% of the cost. Mercedes dealership advised me this is a common issue for this type of vehicle and my case is not a single case. This is a great safety concern and driving this vehicle has been a uncomfortable experience. I strongly believe the sub frame issue is a manufacturer defect and there should be recall issued on it. Thanks.

- Mclean, VA, USA

The contact owns a 2013 Mercedes-Benz C300. The contact stated while driving 75 MPH, she started to hear an abnormal sound. The contact stated no warning light was illuminated. The contact continued driving to her residence however while depressing the brake pedal the vehicle was pulling to the left. The contact continued driving to her residence. The contact towed the vehicle to the local dealer to be diagnosed. The contact was informed that the driver-??s side rear axle and brake line was corroded and needed to be replaced. The vehicle was not yet repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 99,800.

- Cincinnati, KY, USA

The contact's daughter owns a 2013 Mercedes-Benz C300. The contact stated that while driving at various speeds, his daughter lost control of the vehicle upon the depression of the brake pedal. The contact stated that the vehicle would veer off the road without warning. His daughter had taken the vehicle to an independent mechanic who informed her that the subframe had severe corrosion. The manufacturer was notified of the failure and informed his daughter that they could not offer any assistance. The vehicle had yet to be repaired. The failure mileage was approximately 150,000.

- Pompton Lakes, NJ, USA