2015 Mercedes-Benz C300: fuel pump failure

Filed May 7, 2026 · Electrical, Fuel system · TX · crash · 1 injury

I was driving my car was sputtering or trying to shut off while I press the gas and I let go of the gas and it catches and stayed on. I took it to the dealership and they said they found nothing wrong. May 3rd around 12pm im driving on the freeway and as im getting on the express lane going 60 it dies and I couldn't move the steering wheel and I slammed into a guardrail. After doing research my car (vin [XXX] ) had multiple recals from the fuel pump and steering wheel and the dealership never fixed or checked any recalls before selling it to me. 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 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 Oct 1, 2021 · Fuel system · MA

Hi so i woke up this morning and my started my car as usual then noticed the smell of gas all around the car Inside and out. I got worried turned off the car and started sniffing around to see if i can find where the leak was and found out the high pressure fuel pump was leaking i looked up info on this part and it is very common on these car for that part to fail. Im very upset that there is no recall yet when the dealership told me that they do 2-3 of those jobs a week (HIGH PRESSURE FUEL PUMP REPAIRS) and still no recalls on this,what is it going to take to get one?, my car has to blow up to get your guys attention?? Oh wait other Mercedes c300 cars in the united states already caught on fire please fix this saftey hazard i want to feel safe and not worry about catching on fire. ITS BEEN 6 years AND STILL HAVE NO RECALLS FOR THIS CAR ???

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 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.

Filed Nov 7, 2019 · Fuel system · 54,971 miles · UT

Tl* the contact owns a 2015 mercedes-benz c300w4. When the contact entered the vehicle, she noticed a strong odor of fuel. There were no warning indicators illuminated. The vehicle was taken to mercedes-benz of farmington (555 n bourne cir, farmington, ut 84025, (801) 447-3300) where it was diagnosed that the fuel pump was faulty and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and offered a 20% discount towards the repair cost. The contact was informed to call the federal safety agency to file a complaint. The contact referenced the federal safety agency campaign number: 15v138000 (fuel system, gasoline). The failure mileage was approximately 54,971.