SUSPENSION10/05/2025
Mercedes-Benz offers an extended warranty, effectively a 20-year/unlimited mileage coverage, for the rear subframe due to corrosion with perforation, covering specific model years my vehicles make and model are included. I’m having the issues they claim free repair for.
FUEL/PROPULSION SYSTEM10/03/2025
For several months I been smelling different odors from my 2012 CLS550, getting stronger as the weeks go by now smelling like gas, would noticed puddles whenever I parked from rear driver side area towards middle, just got the news from the mechanic that the driver side fuel gas pump is cracked and leaking gas and passenger side is also cracked. Labor + parts $1,660.00..
FUEL/PROPULSION SYSTEM09/12/2025
I have a 2012 Mercedes-Benz CLS63 that is leaking fuel from the rear driver side by the tire. You can smell fuel inside the cabin of the vehicle very strong. On the vin plate on my door it says in my vehicle is built on April 2011 which would qualify it for the recall from Mercedes. Per NHTSA.
FUEL/PROPULSION SYSTEM07/27/2025
There is a strong odor of gasoline coming from the drivers side rear. I conducted a Google search on the issue and there are a lot of instances of the same thing. It appears to be the Gas Tank Sending Unit, they have a tendency to crack and leak.
FUEL/PROPULSION SYSTEM03/19/2025
I have Mercedes Benz CLS 550. Whenever I fill up a tank full, I smell gas in the CAR and in my garage. After researching the cause of this issue , I found its a common issue with Mercedes Benz older vehicles where the fuel sender unit cracks and start leaking Gas which is located under the rear seat driver side. Mercedes Benz sent a recall notice for same problem for older vehicles from 2006-2008 to fix this issue. Below are the steps to reproduce the issue 1. Fill the car up. 2. Drive straight home. 3. Park in the driveway. 4. Take rear seat out(pull up on the leading edge of the lower cushion...there are 2 tabs to depress then the seat comes up) 5. 8mm socket and take the drivers side inspection cover off. 6. There will be a fuel lake around that sender.
UNKNOWN OR OTHER01/27/2025
The vehicle sunroof exploded while traveling on the interstate. Stopped and inspected the vehicle to find no impact objects inside the vehicle. Later reviewed online that this was a common problem with this modern Mercedes and the item is already under recall but not my year. I have a 2012 and the recall stops at 2011 although 2012 sunroofs are exploding too
SUSPENSION,SERVICE BRAKES,FUEL/PROPULSION SYSTEM08/30/2024
Premature rusting on brake and fuel lines which lead to further issues with driveability and saftey. This us caused by the same defects leading to the Premature rust on the subframe that can cause a serious wreck on the interstate.
VISIBILITY09/12/2023
The contact owns a 2012 Mercedes-Benz CLS550. The contact stated that while driving at an undisclosed speed, upon adjusting the sun visor, the sun visor detached, compromising driving visibility. The vehicle was taken to the dealer and the contact was informed that the sun visor needed to be replaced. The vehicle was repaired, but the failure reoccurred. The manufacturer was notified of the failure but referred the contact to the NHTSA Hotline for assistance. The failure mileage was 25,000.
VISIBILITY09/08/2023
The contact owns a 2012 Mercedes-Benz CLS550. The contact stated while driving at an undisclosed speed, the sunroof exploded. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The approximate failure mileage was 86,000.
UNKNOWN OR OTHER12/15/2022
The rear subframe rusted from the inside out causing structural failure of the subframe. This lead to twisting of the chassis under hard braking causing difficulty in controlling the vehicle. As you can imagine, controlling a vehicle when needing to abruptly stop is very important. The rear end felt like it was getting loose and it was very difficult to keep the car moving straight. This type of rust isn't typical on a 10 year old car with only 85,000 miles on it. This is a known issue on other Mercedes Benz models, notably the W204/C Class, to the point where it was recalled in Canada and covered under the European corrosion warranty. However, nothing is covered in the US even though this issue is known by Mercedes in other countries. This has been repaired at my expense. There were no warning messages. This vehicle has been dealer-serviced for most, if not all, of its life and this was missed on every single multi-point inspection done to the vehicle. Had I not been cognizant of how my car should drive and handle or not been able to afford the repair out of pocket, this would escalate and worsen to a bigger issue that could have eventually lead to my own injury or death or that of others.
UNKNOWN OR OTHER03/26/2022
It has been confirmed by a glass company that the car has an improper seal/bonded windshield. The windshield is the original and the car has never been in an accident. A few years ago, i noticed a rattling that I was unable to identify. This was reported during one of the regular maintenance services but the sound was not replicated (as it would happen more often when cold). Recently, the sound has gotten worse, and I had a water leak so I suspected the windshield. As I have already stated the problem was confirmed, and you can literally push on the windshield from the inside and it lifts up. Needless, to say, this is a safety issue. Having owned several cars, I have never had such a problem and would not have expected it from a high-end vehicle.
FUEL/PROPULSION SYSTEM03/02/2022
UNKNOWN EVERY TIME THE CAR IS REFUELED THERE IS A VERY STRONG SMELL OF GASOLINE IN AND AROUND THE VEHICLE. IF YOU CHECK CARCOMPLIANTS. COM THE ARE MANY COMPLAINTS ABOUT THIS DEFECT.. IN THE ARTICLE @ CAR COMPLAINTS .COM THE NHSTA CLAIMS IT KNOWS ABOUT THE PROBLEM BUT SINCE MERCEDES BENZ HAS COMPLETELY IGNORED THE THIS DANGEROUS SITUATION AND NEITHER OF YOU HAVE NOT FOLLOWED THRU WITH MERCEDES BENZ'S OFFER TO EXTENDED A WARRANTY TO 15 YEARS FOR ALL THESE CARS , IE E CLASS, CLS550 AND OTHERS, MB DENIES THIS IS A PROPLEM ,THE NHTSA IS PART OF THE ISSUE SINCE THEY HAVE NOT ENFORCED THE PROMISE BY Mercedes BENZ TO RECALL AND EXTEND THIS ALL CURRENT OWNERS OF THESE VEHICLES , since they refuse to acknowledge this issue my next step is a major class action against MB and NHSTA FOR NEGLINCE IN FOLLOWING UP ON MB PROMISES WHICH WERE MADE IN RETURN FOR THE NHSTA NOT ENFORCING A RECALL OF THESE VEHICLES.
Showing 12 of 24 complaints.