2015 Mercedes-Benz C300: fuel leak

Filed Jan 24, 2025 · Fuel system · MD

Due to the type of fuel line and clamps used to fasten them, cold weather has caused them to shrink such that gas leaks, which comes through the car vents into the car cab and now into my [XXX] and [XXX] kids's lungs. Mercedes has issued a 10 year warranty on this specific feature, but it should be a safety recall unless we agree that inhaling gas vapors is okay for your health. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed Jan 24, 2025 · Fuel system · CA

There seems to be a continuous gas smell in my car and I see some class action law suits for the same problem but dealership says there is no recall- synopsis of class action below February 26, 2021 — A Mercedes C300 fuel smell has led to a class action lawsuit that alleges 2015-2019 (W205) C-Class vehicles have defects that cause fuel leaks and odors. According to the Mercedes-Benz class action lawsuit, fuel can leak into the engine compartment from fuel line connections to the fuel pump at the rear of the engine compartment. Mercedes C300 and other C-Class vehicle occupants complain of strong fuel smells caused by the fuel leaks. Please assist

Filed Apr 22, 2024 · Fuel system · VA

Very strong gas smell inside the car when started and heat or air is turned on. I have done research and it is a common issue with this car. This is a very serious issue that can cause an engine fire with the gas leaking in the engine compartment.

Filed Mar 10, 2022 · Fuel system · KY

Looks like I am not the first one to complain about the strong smell of fuel on the driver side under the hood as well as inside of the vehicle. Upon further inspection it was determined that the fuel line at the pump is leaking fuel. My car has only 48k miles on it...How can such dangerous failure be ignored by MB for more than three-four years or longer?? Please note that this particular issie is leading the complaints chart. Based on the amount of identical complaints, it appears that this "manufacturer" is waiting for an injury or fatality before they do something about it. This fuel hose situation MUST be addressed IMIDIATELY. Please start the recall before it is too late!!!

Filed Mar 1, 2022 · Fuel system · TX

When I got my Mercedes 2.5 years ago I would always notice a very strong gas smell that would come very randomly. I would have to open my windows for the smell of fuel to go away. I presented this to the Greenway Mercedes Dealership 2X VERBALLY and they told me that it is just a "Mercedes thing" and everything is ok because it is not "VISIBILLY" leaking fuel. Which it was not. However, the smell of the fuel is EXTREME, It would happen to me through out the year (in the summer and winter, regardless of temperature) randomlly. I would have to leave the garage ASAP when I turn on my car just in case the smell of fuel was extreme because my parents would tell me that it would even COME INTO THE HOUSE. I thought I was crazy to think this was normal and just a "Mercedes thing". But then I got a letter on August 2021 and did some research and saw I was not the only one and there is a class action lawsuit -Mercedes sent a letter on August 21 announcing they will extended the limited warranty of the "Fuel hose connected to high pressure fuel pump" from the original warranty of 4 years/50,000 miles to 10 years/120,000 miles. HOWEVER, This does NOT HELP, they are still saying it is a wear and tear and REFUSE to replace the defected MANUFACTORER part and INSIST it is not "seeping fuel" from the connection at the fuel pump, so it is NOT under warranty. I am confused as to why this is not a recall? Extending the warranty did nothing to help Mercedes Owners at all. They continued to claim it is "wear and tear so that is why the fuel is sweeping at a different location" AS WELL, two dealerships told me it would take them 24-48 hours for them to JUST INSPECT my car to see if it is covered. This extension did resolve anything, but made sure the dealerships deny even more. Now, I have to continue to leave my garage within 30 sec. so I don't suffocate the cats that sleep in the garage or have my family smell the fuel as I leave. And to open my windows so I can breath fresh air.

Filed Mar 15, 2021 · Fuel system · 55,000 miles · CT

Gas leak/ smell in cabin at idle

Filed Jan 28, 2021 · Fuel system · CA

There is a fuel hose (parts number: 274 070 3500) connect to the high pressure pump in front engine area. The fuel hose was fastened by a clamp (not sure the parts number) . Because of the design flaw, this clamp will loose since it's a snap joint assemblies not tighten by screws. Under this situation, the fuel hose will loose and affected by thermal expansion, this problem will cause fuel leak/seeping. We can smell fuel near the pump before we start car in cold in the morning and this smell can be smelled until the engine working into the normal operating temperature or when we turn on the AC or heater . Fuel is a very critical safety problem and usually we cannot take notice of this potential problem.this is been happening since 11/19/2019 the date when I bought the car till now

Filed Jan 8, 2021 · Fuel system · 79,000 miles · TX

Intermittent fuel leak. Real bad gas smell in cabin coming through the vents. Driver side, in back, down between the engine and body. The fuel lines are pressurized, so it might only leak when the pressure builds up. I kept getting a strong gas smell the garage after parking for long periods.

Filed Nov 23, 2020 · Fuel system · 78,000 miles · CA

Gas leak in fuel line, while receiving an oil change from a licensed mechanic, he brought to my attention that, there was fuel leaking from the fuel line and showed (fuel line soaked with gasoline directly under the engine), I also noticed that when using the AC the strong smell of gasoline comes through the vents.

Filed Aug 14, 2020 · Fuel system · 40,000 miles · WA

I took my car in for a multi point inspection at the end of november 2019 to mercedes of bellevue. I begun smelling gasoline from the inside cabin of my car a few days after the service and had to take the car back to the dealership. They found that fuel hoses going to the high pressure fuel pump to be leaking fuel. With this being a potential fire hazard and a safety issue, I argued with the dealer that it should be covered under warranty, which I still had a cpo warranty from purchasing the vehicle from this specific dealership. I did some research online and found that, this is a very common issue with my vehicle model, 2015 mercedes benz c300. I am unsure why this issue is not yet recalled by the manufacturer or why the dealership did not honor this issue tto be covered under warranty.. As a concerned customer of the hazardous possibilities a fuel leak could cause, I still moved forward with paying for the repair out of pocket versus continuing to debate with the finance and service personnel that it should be covered under warranty that I still had at the time.

Filed Mar 2, 2020 · Fuel system · 66,000 miles · GA

Crankcase breather hose is leaking fuel. Fuel line is leaking fuel. This creates gas smell in the car. This is also unsafe due to the fuel leakage. Looks like this is a very common problem on these cars. It should be a recall.

Filed Jan 7, 2020 · Fuel system · 65,000 miles · FL

2015 mercedes benz c300 with 65 k miles. The secondary high pressure fuel pump (274070050180) leaked gas seriously. It was the unit itself not the connections or lines to it.