Mercedes-Benz E350 Fuel System Problems

Fuel System complaints by model year

Which parts fail

• Delivery › Fuel pump
  8
• Storage › Tank assembly
  7
• Delivery › Hoses, lines/piping, and fittings
  2
• Storage › Auxillary tank
  1
• Fuel filter
  1
• Delivery
  1

Components named in complaints (fuel pump, injectors, fuel tank, hybrid and EV propulsion).

Mileage when the problem started

• Under 25k
  224%
• 25k–50k
  7813%
• 50k–75k
  14925%
• 75k–100k
  14525%
• 100k–150k
  15025%
• 150k+
  458%

What owners report

The contact owns a 2021 Mercedes-Benz E350. The contact stated while driving at approximately 60 MPH, the check engine warning light illuminated, and the vehicle decelerated to 30 MPH. The vehicle was taken to the local mechanic who diagnosed that the fuel pump was faulty and needed to be replaced. The vehicle was not repaired. The local dealer and manufacturer were notified of the failure and informed the contact that the VIN was not included in NHTSA Campaign Number: 23V445000 (Fuel System, Gasoline). The contact stated that the vehicle had experienced that failure listed in the recall. The failure mileage was 53,200.

The engine is misfiring and not powering correctly during driving. Car is failing to take off and today almost caused an accident due to the car would not pull off from the traffic light with oncoming traffic due to loss of power. Safety was at risk due to an accident was almost caused due to car not moving in on coming traffic Dealership is citing that is needs to have a cylinder replaced but will not tell me why it needs to be replaced, why this has happened or what could have been done pre maintenance to avoid this issue Check engine light came on Dealer has been contacted, and was told this is a common issue for this to happen to newer cars, but will not fix the issue and extended warranty will not cover due to this is a manufacturer issue

The contact owns a 2016 Mercedes-Benz E350. The contact stated that while the vehicle was parked and shut off inside the garage, there was an abnormally strong fuel odor detected. The vehicle was taken to the dealer, where it was diagnosed with a cracked fuel filter that needed to be replaced. The vehicle was then taken to an independent mechanic, who replaced the fuel filter. The manufacturer was not made aware of the failure. The failure mileage was 48,000.

Fuel odor is very apparent (while idle) but difficult to identify location. Same models seem to have recalls for fuel injectors/rails but not this specific VIN. I believe the issue might be of similar recall. I will have the car diagnosed soon.

The contact owns a 2014 Mercedes-Benz E350. The contact stated that while her daughter was driving at an undisclosed speed, there was a fuel odor perforating through the interior of the vehicle. The driver later reported feeling ill which she attributed to the fuel odor in the vehicle and determined to discontinue driving the vehicle. No warning lights were illuminated. The vehicle was towed to an independent mechanic, who was able to smell the fuel odor but was unable to provide a diagnosis. The vehicle was not repaired. The vehicle was towed to another independent mechanic, who diagnosed a failure with the fuel pump. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 15V792000 (Fuel System, Gasoline), but the VIN was not included. …

Vehicle subframe corrosion (manufacturer extended warranty offered). Rear brake lines corroded/leaking. Vehicle leaks fuel; steel fuel line corroded. Vehicle has about 105k miles. Minor fire started when yard maintenance came in contact with fuel saturated ground where vehicle had been parked/moved out of the way just prior. With rear suspension subframe springs corroded, vehicle bottom can contact road surface while driving, scraping steel exhaust with fuel present. EXTREMELY dangerous. Local Sunbury Ohio Mercedes dealership inspected then offered subframe replacement. Stated it was leaking fuel and not hydraulic fluid we originally thought. Brake, suspension and fuel line corrosion repairs were quoted in excess of $4,000, which was a "great deal" according to them "because the subframe would already be removed and would make it much easier."

The contact owns a 2013 Mercedes-Benz E350. The contact stated while driving 45 MPH, there was an abnormal fuel odor inside the vehicle. The contact stated no warning light was illuminated. The contact stated that after parking the vehicle, the fuel odor was present on the outside of the vehicle. The contact did not see fuel leaking underneath the vehicle. The contact took the vehicle to an independent mechanic and after removing the rear seats from the vehicle, the mechanic became aware of a fuel leak inside the vehicle. The vehicle was not repaired. Upon investigation, the contact associated the failure with NHTSA Campaign Number: 12V557000 (Fuel System, Gasoline) however, the VIN was not included. The contact took the vehicle to the local dealer and made them aware of the failure. The vehicle was not diagnosed or repaired. The manufacturer had not been informed of the failure. …

The contact owns a 2013 Mercedes-Benz E350. The contact stated while entering the vehicle, she noticed the smell of gasoline. The contact started the vehicle with no issues however, the gasoline odor was still in the vehicle. The contact stated no warning light was illuminated. The contact drove the vehicle to an independent mechanic to be diagnosed. The mechanic determined that the fuel lines running underneath the rear passenger's seat were leaking and needed to be replaced. The independent mechanic referred the contact to an authorized dealer. The vehicle was towed to the dealer but was not diagnosed nor repaired. The manufacturer had been informed of the failure. The failure mileage was approximately 150,000. The VIN was unavailable.

Related recalls (5)

NHTSA investigations