2014 Mercedes-Benz E350 fuel, hybrid & EV propulsion problems

Related recalls

• Recall 15V792000Nov 24, 2015809 vehicles
  FUEL SYSTEM, GASOLINE:DELIVERY

  Mercedes-Benz USA, LLC. (MBUSA) is recalling certain model year 2014 E350 and E350 4Matic sedans manufactured June 4, 2014, to July 9, 2014. The affected vehicles were built with a fuel feed line that has a single flare fitting instead of a double flare fitting.

  Risk: If the fuel feed line has the incorrect flare fitting, the connection between the fuel hose and the fuel feed line might develop a leak or may completely disconnect. Leaking fuel in the presence of an ignition source increases the risk of a fire and if the fuel feed line disconnects, the vehicle would stall, increasing the risk of a crash.

  Remedy: MBUSA will notify owners, and dealers will install the correct fuel line, free of charge. This recall began on January 11, 2016. Owners may contact Mercedes-Benz customer service at 1-800-367-6372.

What owners say

1. Filed Jul 8, 2026OHFireBrakesFuel, Hybrid & EV PropulsionSuspension

   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.…

   NHTSA complaint #11749054 · source
2. Filed May 20, 202678,000 miTXFuel, Hybrid & EV Propulsion

   The contact owns a 2014 Mercedes-Benz E-Class. The contact stated while driving at an undisclosed speed, the contact noticed fuel odor in the interior and exterior of the vehicle. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The dealer was made aware of the failure. The contact referenced an unknown recall; however, the VIN was not associated with a recall related to the failure. The manufacturer was made aware of the failure. The…

   NHTSA complaint #11738986 · source
3. Filed Apr 18, 2026CAFuel, Hybrid & EV Propulsion

   Strong smell of fuel from the rear wheel well areas, especially after a fill. I have been searching the recalls and found a 15V-792 / [phone removed] Recall Summary as well as a 15V-792 / [phone removed] Recall Solution. Please advise if this is of safety concern and the dealer should address this concern. [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

   NHTSA complaint #11732141 · source
4. Filed Apr 1, 202640,905 miNCFuel, Hybrid & EV Propulsion

   The contact owns a 2014 Mercedes-Benz E350. The contact stated that while the vehicle was parked, fuel was leaking from near the fuel tank. There was no warning light illuminated. The contact stated that the failure was intermittent. The vehicle was taken to the dealer; however, the failure could not be duplicated. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 40,905.

   NHTSA complaint #11728634 · source
5. Filed Mar 9, 2026TXEngineFuel, Hybrid & EV Propulsion

   Issue with fuel injection for Benz E350 2014 2014 Mercedes-Benz E350 fuel injection issues often stem from faulty injectors causing misfires, often on Cylinder 5, or a recalled fuel feed line. Symptoms include rough idling, reduced gas mileage, stalling, and check engine lights (P0300-P0306 codes).

   NHTSA complaint #11723123 · source
6. Filed Oct 14, 2025NJBrakesFuel, Hybrid & EV Propulsion

   2014 Mercedes e350 these models as well as those from2009-2015. Have recall on subframe but the brake lines rust out and deteriorate as mine has now done. If you go on line you tube etc. you will see the issue and all complaints. I had my subframe replaced under warranty at Mercedes of flemington. About 1 1/2 years ago. While it was being serviced they asked me if I wanted to replace brake lines for $1200 since they had this part out job would be easy. So this means Mercedes…

   NHTSA complaint #11693371 · source
7. Filed Sep 16, 2025TXFuel, Hybrid & EV Propulsion

   Fuel smell in the rear of the car, it was checked by a indepent mechanic and the tank is leaking fuel. They said is the Fuel filter which is usually faulty in this model. It seems the car can catch fire according to the mechanig. No warnings of the leaking in the dashboard, only the strong smell.

   NHTSA complaint #11687667 · source
8. Filed Jul 14, 2025TXBody & StructureFuel, Hybrid & EV Propulsion

   The contact owns a 2014 Mercedes-Benz E350. The contact stated that while driving at an undisclosed speed, there was an abnormal fuel odor inside and outside of the vehicle. In addition, the contact stated that the vehicle was consuming an excessive amount of gasoline. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The contact stated that the failure persisted. Upon investigation, the contact related the failure to NHTSA Campaign Number:…

   NHTSA complaint #11673382 · source
9. Filed Jun 11, 2025NYFuel, Hybrid & EV Propulsion

   The contact owns a 2014 Mercedes-Benz E350. The contact stated that while the vehicle was parked in the garage, there was an abnormally strong fuel odor coming from the vehicle. The vehicle was taken to an independent mechanic, who diagnosed the vehicle with a fuel tank leak. The contact was informed that the fuel tank needed to be replaced. The vehicle was not repaired. The contact related the failure to NHTSA Campaign Number: 15V792000 (Fuel System, Gasoline); however, the…

   NHTSA complaint #11666239 · source
10. Filed Jun 4, 2025118,000 miVAFuel, Hybrid & EV Propulsion

    The contact owns a 2014 Mercedes-Benz E350. The contact stated that after parking the vehicle in the garage, there was an abnormal fuel odor outside the vehicle. The contact stated that there were no signs of a fuel leaked on the garage floor. The contact had not taken the vehicle to a local dealer or independent mechanic, and the vehicle was not diagnosed or repaired. The contact researched online and related the failure to NHTSA Campaign Number: 15V792000 (Fuel System,…

    NHTSA complaint #11664889 · source
11. Filed May 5, 2025NHFuel, Hybrid & EV Propulsion

    I had a sudden smell of fuel when I looked outside the vehicle I noticed a leak under driver side back seat area under vehicle

    NHTSA complaint #11658966 · source
12. Filed Feb 10, 202580,000 miCAFuel, Hybrid & EV Propulsion

    The contact owns a 2014 Mercedes-Benz E350. The contact stated that there was an abnormal fuel odor inside and outside the vehicle. The contact was informed by his wife of the failure, but recently the fuel odor had become more prominent. There was no warning light illuminated. The vehicle was taken to an independent mechanic where the contact was informed about a fuel leak. The fuel tank access underneath the rear seat had leaked fuel into the interior and exterior of the…

    NHTSA complaint #11641796 · source

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. View this vehicle on NHTSA.gov Methodology