There are 6 owner-reported fuel system complaints for the 2011 Mercedes-Benz S-Classin NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2011 Mercedes-Benz S63. The contact stated that on several occasions while driving at various speeds, the contact noticed an abnormal gasoline odor. The vehicle was taken to an independent mechanic where it was diagnosed that the fuel filter flange was cracked and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was approximately 105,000.
My driver side Rear seat underneath is leaking gasoline. FUEL SYSTEM, GASOLINE If the fuel filter flange cracks, it will leak fuel which may lead to a fire if an external ignition source is present. NHTSA CAMPAIGN ID Number: 12V557000
I bought a 2011 MB S400 last year. Everything was good till 3 months ago. I smelled a very bad gas leak one day and it gets worse after I fuel my thank. Nobody wants to seat my car after I buy a gas. I realized there is a gas on my driveway under my passenger seat. When I googled it, there is a recall for MB W221 for 2011 models because of the Fuel Filter parts problem. It's not designed for the heat. Somehow, some 2011 s are not part of this recall, and MB doesn't stand on their car even have the same problem. I removed the back seat and everywhere was gasoline because of the crooked fuel filter part. Protective layer was in so many pieces because of the heat. When I wrote the MB, they refused the replace the part, they didn't accept their safety problem that happened for 2011 MB W221 S class. Currently, I wait their respond. It is so sad, they refuse to replace 100$ part in part of recall. Be careful if you buy a MB, it is not designed for the heat, and MB refuses to replace the problematic fuel filter. Currently, I wait the day to replace the part, or I will be in fire because I drive with a gasoline leak every day. Look at the picture, it is a Mercedes Benz S Class with leaking because of the bad fuel filter design !
The contact owns a 2011 Mercedes-Benz S63. The contact stated that upon refueling the vehicle, he smelled a strong gasoline odor inside and outside the vehicle. The contact stated that the failure reoccurred several times. The dealer was not notified of the failure. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure and informed the contact that the vehicle could not be repaired under NHTSA Campaign Number: 12V557000 (Fuel System, Gasoline) as the VIN was not included. The failure mileage was approximately 68,300.
I am filing a complaint with your agency regarding a fuel pump malfunction with my 2011 Mercedes S550 (VIN# [XXX]), because I feel that the incident below is a major safety concern and is similarly situated to the following NHTSA Campaign #12V557000. On March 15, 2022, I was pumping gas into my vehicle at Costco in Brookhaven, Georgia. The gas attendant and I were chatting about gas prices and so forth. In 10-to-15 minutes Costco's members that were getting gas, were attempting to alert us that an ocean ($88.00) of fuel was rapidly spewing out the opposite side (driver side) of the vehicle's fuel tank. On March 16, 2022, I had the vehicle towed to RBM of Atlanta in Sandy Springs, Georgia. Later that afternoon, [XXX], the service advisor advised me that the vehicle's fuel tank will need to be replace. I agreed to the repair. However, I asked the advisor to send me photos of the malfunctioned part, as well as, an itemized Repair invoice. I have yet to receive either. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).
TL* THE CONTACT OWNS A 2011 MERCEDES-BENZ S63. WHILE THE VEHICLE WAS PARKED, THE CONTACT BECAME AWARE OF A FUEL LEAK UNDER THE REAR OF THE VEHICLE. THE CONTACT STATED THAT THERE WAS AN ABNORMAL FUEL ODOR IN THE CABIN OF THE VEHICLE. THE VEHICLE WAS NOT TAKEN TO BE DIAGNOSED. PENSKE MERCEDES-BENZ OF WEST COVINA (2010 E GARVEY AVE S, WEST COVINA, CA 91791, (866) 240-5730) WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS NOT REPAIRED. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 12V557000 (FUEL SYSTEM, GASOLINE). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 74,922.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 25, 2026