2012 Mercedes-Benz E350: fuel leak

Filed Jun 22, 2026 · Fuel system · 70,000 miles · DE

The contact owns a 2012 Mercedes-Benz E350. The contact stated that while driving at an undisclosed speed, there was an abnormal odor coming from the inside of the vehicle. No warning lights were illuminated. The vehicle was taken to an independent mechanic, where it was diagnosed with a fuel leak. The vehicle was not repaired. The contact researched and was made aware of the federal safety agency Campaign Number: 12V557000 (Fuel System, Gasoline); however, the VIN was not included in the recall. A dealer was contacted; however, the vehicle was not yet diagnosed by the dealer. The manufacturer was notified of the failure. The failure mileage was approximately 70,000.

Filed May 4, 2026 · Fuel system, Suspension · NC

The failed component is a fuel pump, and it is available for inspection upon request. My safety and the safety of others was put at risk due to the following: 1) Sudden engine stalling 2) Dangerous power loss while accelerating 3) Potential fire risks; a damaged fuel pump assembley can cause fuel leaks and overheating due to insufficient fuel supply can increase the risk of explosion or fire. 4) Gas fumes from a fuel leak are highly harmful and dangerous. They are toxic to inhale causing dizziness, headaches, nausea or respitory issues.

Filed Aug 4, 2025 · LA

Gasoline Fuel System problem of the 2012 Mercedes Benz E350. Driver side fuel leak was excessive. Leak caused an excessive amount of gas to spill while driving on a 600 mile long round trip to St. Louis. The fuel filter sending unit had numerous stress cracks in the plastic. A massive failure was looming. I have pictures and have documented the failure. 2184700194 was the original part and now has changed too 2184700994. A component should be easily inspected to prevent such a dangerous situation. For the past 13 all services work was preformed by Mercedes.

Filed Mar 16, 2025 · Fuel system · VA

I have a 2012 E350 with less than 95000 miles and I see these vehicles were recalled in the past for their fuel tank manufacturer malfunction but my VIN number was not included. This car went numerous times to the mechanics and the fuel components fixed but it still leak gas and smells even when I do not drive the car. I spent over $15000 on this matter. This is now becoming a safety issue for me and my neighbors. I don't know what to do. Here is what happened. All began February 2023, I towed the car to an approved MB mechanics who said fixed the car. 9 month later, I brought the car back for the same issue. Strong fuel smell. The attachments for repairs will show the work done. Some repeated and recharged to me. The following year April 2024, I woke up one day with a fas leak all over my drive way and a strong smell of gas. I had the car towed for a repair cost of $7754 total. I am constantly having the same problem with the car and wanted to alert here to bring Mercedes Benz awareness to their faulty parts putting consumer lives at risk.

Filed Aug 2, 2024 · Fuel system · 143,459 miles · VA

The contact owns a 2012 Mercedes-Benz E350. The contact stated that the filter flange was cracked. There was an abnormal fuel odor detected. The vehicle was leaking fuel near the fuel tank onto the ground. After refueling and driving five miles, the fuel was depleted to half a tank. There were no warning lights illuminated. The contact stated that the failure was related to the federal safety agency Campaign Number: 12V557000 (Fuel System, Gasoline). The contact called the local dealer and was informed that there were no open recalls on the VIN. The vehicle was not diagnosed or repaired. The manufacturer was contacted, but no assistance was provided. The failure mileage was approximately 143,459.

Filed Sep 13, 2022 · Fuel system · GA

The incident was not the vehicle persa but passengers riding in back seat experienced nausea and headaches. Found gas fumes emitting from vehicle. As time progressed fumes got worse and fuel mileage performance worsened. Gas consumption was extremely bad. Car was taken in for oil change and absolutely no gas leaks were found and technician showed me the under carriage of car. Nothing showing on the OBD. Afraid car will catch fire. Not driving as of today.

Filed Jun 27, 2022 · Fuel system · NJ

Fuel leaking from rear passanger side tire area. Took vehicle to dealer. Dealer identified faulty fuel tank as source of fuel. This problem has been reported in other Mercedes classes, including a manufacturers recall. My vehicle is 10 years old with only 71,000 miles. Dealer wants over $7,500 to repair. This issue has occured in other Mercedes classes. This is a safety issue as driving with a leaking fiel tank can cause a fire and explosion. Please expedite this issue. Thanks

Filed Feb 2, 2022 · Fuel system · FL

I noticed the strong smell of fuel around the rear of the car especially around the back. Upon inspection I noticed that the corner of the tank on the driver's side was wet with fuel. I took it to my mechanic who on inspecting the car reported that the pump outlet on the driver's side pump (which is accessed from the interior under the back seat) was spraying fuel up against the underside of the car against the rear seat and also noticed that the second pump on the passenger side on top of the tank was also seeping fuel. To have fuel leaking anywhere is dangerous, but to have it happening under the rear seat where my children sit is extremely dangerous. I checked for a recall for this problem with Mercedes but didn't find one on their site. I called them at their corporate HQ and they claimed not having a complaint like this before and didn't want to accept any responsibility for the faulty part/s. This is in need of immediate attention by Mercedes Benz before someone loses their lives because of MB ignoring this serious problem. [XXX]... Phone [XXX] email [XXX] Car fills with strong fuel vapors with raw fuel collecting on top of fuel pump Many more reports for same problem I found online that Mercedes would not react to, here is a typical one... Other Fuel System Pump problem of the 2012 Mercedes Benz E350 Date: 06/01/2020 1) My vehicle is emitting a very strong fuel smell and possible leak coming from the fuel pump. This is located under the rear seat, which had a recall. I believe that the item is faulty and should replace once again. I reached out to the dealership and to mb corp; but they do not want to take responsibility for their faulty design and product. The vehicle is not safe to drive with the strong vapors, which are dangerous to health. Also, I am forced to leave the vehicle outside of the garage because of my fear that this will cause a fire or explosion, resulting in massive house destruction and possible death. INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 5

Filed Jan 11, 2020 · Fuel system · 74,500 miles · NC

Fuel pump housing (under rear seat,drivers side) cracked and leaking fuel. Car fills with strong fuel vapors with raw fuel collecting on top of fuel pump housing. This was noticed while driving, pulled rear seat cusion to discover raw fuel inside car.

Filed May 21, 2019 · Fuel system · 57,437 miles · AZ

Smelled gas fumes around sides of vehicle. Repair facility found fuel leak around the fuel filter with subsequent repair.