I first noticed the problem around March 2026. When I fill the fuel tank of this 2007 Mercedes-Benz E350, gasoline pools on top of the tank beneath the rear seat, inside the passenger cabin. I have breathed gasoline fumes from it. There was no fire or crash. An independent Mercedes specialist's records include a March 2026 recommendation noting a very fine EVAP leak at the fuel tank and/or vapor line and that the tank is no longer available. On May 29, 2026 (65,138 miles), with the check-engine light on and a strong fuel smell inside the vehicle, the shop replaced a leaking left fuel pump and seal. A fuel-system test that day indicated further checks were required. The gas pooling continued after the pump was replaced. On July 28, 2026 (66,067 miles), the shop noted that the fuel tank is warped. I wrote to Mercedes-Benz USA on October 13 and October 16, 2026 with my service records and have not received a response.
Mercedes-Benz E350 check engine light comes on
124 of the 2,222 owner complaints about the Mercedes-Benz E350 describe check engine light, most of them for the 2006 model year.
- owner complaints
- 124
- worst model year
- 2006
- typical repair cost reported
- $5,500
- typical mileage
- 80,000
By model year
Often reported together
Fuel smell 18Stalling 11Misfire 10Fuel pump 8Fuel gauge 8Won't shift 6Loss of power 6Fuel leak 5
Trouble codes mentioned
P0017 8P0016 8P0456 3P2725 1P2198 1P2195 1P2006 1P0306 1P0300 1P0174 1
What owners say
The contact owns a 2012 Mercedes-Benz E-350. The contact stated that while attempting to start the vehicle, the check engine warning light illuminated. The vehicle was taken to an independent mechanic where it was diagnosed with a failed crankshaft sensor. The contact stated that the crankshaft sensor was replaced; however, the failure reoccurred. The vehicle was taken to another independent mechanic where the contact was informed that the crank shaft sensor needed to be replaced. The vehicle was repaired; however, the failure reoccurred. The vehicle was taken to another independent mechanic, and the crankshaft sensor was replaced. The vehicle was repaired, but the failure reoccurred. The vehicle was not diagnosed or repaired by an independent mechanic or the dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 152,000.
Engine misfires, lower engine power, and a lit check engine/Malfunction Indicator Lamp. Mercedes-Benz issued an Emission Service Campaign (No. 2021070006, internal code 21P1590208) to replace out-of-spec ignition coils on 657 vehicles from model year 2021, including the E-Class. My VIN was not included in the recall campaign but my vehicle is experiencing these exact symptoms as referenced in the first sentence. My vehicle has 48,000 miles.
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).
My car displayed all of the issues listed below for the Electrical system recall. The fuel gague went "blank", other gagues acting irradical, the check engine light stay on, etc. My car make and model fall under this recall but have been excluded. I had to pay out of pocket $4678.50 to replace the entire fuel tank due to this and the Manufacture (Mercedes Benz) is refusing to reimburse me. (1) THE FUEL GAUGE READINGS MAY BE INCORRECT; (2) A STUCK FUEL-LEVEL SENSOR MAY NOT BE DISPLAYED IN THE INSTRUMENT CLUSTER; (3) THE OBD SYSTEM MAY CAUSE THE CHECK ENGINE LIGHT TO ILLUMINATE INCORRECTLY; AND, (4) THE SPEEDOMETER MAY BE OUT OF TOLERANCE. IN THE EVENT OF A VEHICLE CRASH, THE ELECTRICAL FUEL PUMP MAY NOT RECEIVE A CRASH SIGNAL THAT IS REQUIRED FOR THE FUEL PUMP TO DISCONNECT AND PREVENT FUTURE FUEL DELIVERY AS DESIGNED.
The car would not start, and displaying multiple rotating warnings. The car could not be shifted to neutral. The problem is going away after several hours by itself. Only check engine light remaining after car is able to start. The problem happened three times, most recent on October 20th. The last two problems were potentially addressed by updating software. Obviously the problem is still not fixed.
My 2021 Mercedes-Benz E350 (VIN [XXX] ) developed a serious engine issue involving cylinder misfire and check engine light. The dealer diagnosed it as a leaking exhaust valve on cylinder 4, related to TSB LI01.30-P-072328, which documents valve seat wear in M260 engines. This is a known defect acknowledged by Mercedes in technical bulletins, and other customers in the U.S. have received warranty extensions or goodwill coverage. I was denied coverage even though this is a manufacturer defect that can lead to misfire, power loss, and potential stalling, posing a safety risk on the road. Mercedes-Benz USA refuses to cover the repair (~$7,600+), even though it relates to a factory-documented problem. I’m requesting that the federal safety agency investigate this engine defect, as it may qualify for a safety recall or mandatory extended warranty coverage. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
On [XXX] I went out and started my car and it said. Power steering was my function so I turned it off and tried it again. And it said the same thing. Power steering malfunction read the owner's menu which I did is said if you can steal it. Drive it to the nearest dealership. You can't park it Well, it was already parked in my driveway. So on June 13th. I had a toll to Feldmann Import in Bloomington MN I hate to think of what would happen if I was driving. Could it cause an accident? They confirmed that it was a problem with the stirring call at first I thought it was a leak. Turns it off that This is electrical steroid. The electronics on this during column went out. The report said it was no can message was received from the unit in 68. VS steering control unit. There was no warning that the power Stern was going to go out. I did have a engine light on, but that was due because of my. Rare radar's being out. That's the best way I can explain it. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
Smell gasoline on driver side. Can’t fill tank up or the smell is unbearable. Gas consumption is high. Engine light is on , suspension make a lot of noise, and ticking on driver side.
The contact owns a 2020 Mercedes-Benz E350. The contact stated that while driving at an undisclosed speed, the contact detected an abnormally strong fuel odor inside the vehicle. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic and the dealer, who determined that the fuel injector in cylinder #3 needed to be replaced. The vehicle was not repaired. The contact related the failure to the federal safety agency Campaign Number: 21V961000 (Fuel System, Gasoline); however, the VIN was not included in the recall. The manufacturer was made aware of the failure and advised the contact to file a complaint with the federal safety agency Hotline. The failure mileage was approximately 37,000.
Related recalls
Engine and engine cooling: engine: gasoline: turbo/supercharger
- What is wrong
- Mercedes-Benz USA, LLC. (MBUSA) is recalling certain 2020 C300, E350, and GLC300 vehicles equipped with turbocharged 4-cylinder gasoline engines. The screws that retain the turbocharger oil feed and return lines may not have been properly tightened, possibly resulting in an oil leak.
- Risk
- An oil leak in the presence of an ignition source such as hot engine or exhaust components can increase the risk of a fire.
- Remedy
- MBUSA will notify owners, and dealers will inspect the turbocharger oil lines and tighten them as necessary, free of charge. The recall began August 17, 2020. Owners may contact MBUSA customer service at 1‑800‑367‑6372. MBUSA's number for this recall is 2020070017.
Recall number 20V364000 · Recall details
Engine and engine cooling: engine
- What is wrong
- Mercedes-Benz USA, LLC (MBUSA) is recalling certain model year 2016 Mercedes Benz E350, E400, E400 4Matic, E63 4M S AMG, E350 4Matic, E63-4M S AMG, 2015 CLS400, CLS400 4Matic, CLS550, CLS63-4M "P" AMG, and CLS550 4Matic vehicles manufactured April 16, 2015, to April 22, 2015. The integral steel cable that secures the rubber seal to the bulkhead might have been damaged due to the supplier rework of the rubber seal. In the event the rubber seal is not properly secured around the engine compartment, it is possible for the rubber seal to temporarily stick to the hood when it is opened and then may fall into the engine bay when the hood is closed.
- Risk
- If the rubber seal falls into the engine compartment, it may contact parts of the engine or exhaust system, increasing the risk of a fire.
- Remedy
- MBUSA will notify owners, and dealers will replace the rubber seal, in the engine compartment, free of charge. The recall began on September 2, 2015. MBUSA's number is 2015080001. Owners may contact MBUSA customer service at 1‑201‑573‑5339.
Recall number 15V505000 · Recall details
Questions about the Mercedes-Benz E350 check engine light
Why does the check engine light come on in the Mercedes-Benz E350?
Owners who report it most often also describe gas smell in the cabin, engine stalls while driving and misfire or rough idle, and the codes they mention most are P0017, P0016 and P0456.
Which Mercedes-Benz E350 years have check engine light problems?
The model years with the most reports are 2006 (40 complaints), 2007 (34 complaints) and 2008 (10 complaints).
How much does it cost to fix check engine light on the Mercedes-Benz E350?
Owners who mentioned a price put the repair at about $5,500 (median of 48 complaints that include a dollar amount). Costs vary with mileage, warranty and where the work is done.
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