I just had my vehicle in the shop for starting problem and oil leak. The former mercedes mechanic told me about my subframe having holes in it and the rear wheel moving forward and back during braking. I'm taking it to the dealership for replacement, but I'm upset knowing that I just took a 1400 mile trip with this problem on my vehicle with family in the vehicle and it could have been catastrophic for us all. I've received no notice of the 20 year extended warranty on this vehicle, but a notice of the Takata airbag issue was received recently by me. Not notifying me is irresponsible. I hope everyone gets this repaired before a life is lost.

- Youngstown, OH, USA

Corrosión en toda la parte trasera (subframe) que sujeta la suspensión haciendo el carro inestable a la hora de detener el automóvil, y apaga los sistemas ABS, ESP. lo cual lo hace mas peligrosa la conducción. Si Toyota hizo el cambio en sus vehículos con por que mercedes benz deberia comprometerse a repara esta parte. Ya que es un riesgo a la seguridad.

- Framingham, MA, USA

corrosion on entire frame crossmember part

- Framingham, MA, USA

Subframe is completely rotted. Taken to several mechanics who were unable to diagnose handling problems and severe tire wear. After research this is a common problem, we were never notified this could be an extremely dangerous and hidden issue. Car is unsafe to operate without expensive repairs. Unacceptable.

- Athol, MA, USA

While driving I was unable to come to a complete stop-??.while breaking the vehicle would pull to the side and keep moving into traffic ?

- Randolph, MA, USA

Rusted rear subframe

- Manchester, CT, USA

Subframe of the car rusted and rotted from inside out. to the point of rear suspension completely detached from subframe. it caused my car to fish tail and lose control under even slow breaking conditions. once we discovered the problem we were told the car was a death trap and was absolutely unsafe to operate. we found out this is a common problem for this MB model type. the problem was already under recall in Europe. there are thousands of existing owner complains about the exact same issue. MB USA initially refused to acknowledge the problem, but on 2/14/2023 they sent a memo to all US dealers to repair rotted subframe for free under "extended warrantee". however, they refused to pay for the full repair even after dealership specifically informed them that it was not possible to complete the repair without replacing thrust arm and rod, which were damaged due to the Subframe failure. this incident endangered me and my family, cost $2000+ out of pocket for repairs in addition to the loss of access to my vehicle for at least 3 weeks.

- Rockville, MD, USA

After breaking hard the vehicle started to pull left and the rear felt like it had locked up. I took it immediately to my local mechanic who diagnosed a prematurely rotted out subframe. I am in the process of having MB review and quote for the repair.

- West Acton, MA, USA

I am the owner of a 2010 Mercedes GLK 350 with 102,531 miles. The problem I have is the rear subframe rusted with a crack on the rear subframe making it very dangerous if the rear subframe fails while driving. This issue has become very popular with the c class Mercedes Benz.

- Manchester , CT, USA

On 10/5/22, my wife was driving her 2010 GLK 350 to work, suddenly she felt the break pedal was going deep inside easily and noticed break fluid light warning sign in dashboard. She was scared to drive and slowly drove car to Mercedes authorized technician. After diagnosis, MB technician said the issue in not just on break fluid leaks but the entire breaking system is failing due to rear subframe rust which holds the entire suspension and body. He said car is not safe to drive will cost $4K to $10k to repair. Called another dealer near by said the same as this is common issue with Mercedes due to snow the subframe rust during winter. It is ironic that even with frequent servicing with dealer they never found these rust issue early because rusting process started early on any metals. Went online to dig deeper on this issue and surprised this issue is widespread check https://mbworld.org/forums/c-class-w204/805501-rotted-rear-subframe-2.html#post8650716 Apparently Mercedes recalled all C class cars to replace subframe as they realized it is their design issue in Europe, UK and Canada. Here in USA dealers give excuses saying it due to winter snow it rust even though they did not catch such dangerous safety issue in the car. Imagine if how severe this break safety issue. Please take action on Mercedes Benz to address this safety issue US, specially it has been addressed in UK, EU, and Canada.

- Eagleville , PA, USA

The cross beam-in the rear are completely rusted out as are the brake lines. I had this vehicle from brand new and there isn-??t any rust except for there.This problem has happened in Canada and other countries. Mercedes-?? Benz has recalled it there and not in the United States. I stope to a representative at Mercedes Benz and she said they were aware of the problem and said it would be the next recall. I-??m afraid to drive this vehicle it-??s unsafe

- Groveland , MA, USA

My mechanic reported that the subframe is corroded and that the vehicle is unsafe to drive. He told me that I cannot drive it at all. Apparently this is a very common problem in C class and Glk class Mercedes vehicles. I read that this problem is considered a recall issue in Germany and Canada, but not here in the US. My suv has 102,000 miles and is in good shape otherwise-??. This is a very dangerous issue that Mercedes in not acknowledging as a recall.

- Boonton Township, NJ, USA

The rear sub frame corrosion which caused the back tire of the driver side to fail off and lose control of the vehicle, which put myself and other drivers in harm because of lost of vehicle. The rear sub frame has corroded sooner than it's lifecycle. The dealership has confirmed the issue, inspected the part and has replaced. There were no warning lights that have gone off on the vehicle to notify of the issues. Driver hit a pot hole and the frame cracked due to premature corrosion.

- Cincinnati, OH, USA

Takata recall. The contact owns a 2010 Mercedes Benz Glk350. The contact stated that there was an abnormal noise progressing in the rear of the vehicle while driving at any rate of speed. The dealer was notified of the failure more than once, indicated that there was no safety concern and the vehicle was not diagnosed to determine the failure. The contact later received notification of NHTSA campaign number: 15V711000 (air bags). The manufacturer was notified of the failure. The failure mileage was not available.

- Milton Village, MA, USA