2017 Mercedes-Benz C 300 fuel, hybrid & EV propulsion problems

Related recalls

No recalls on file.

What owners say

1. Filed May 15, 202665,422 miCAFireTowedElectrical SystemEngineFuel, Hybrid & EV Propulsion

   The contact owns a 2017 Mercedes-Benz C300. While driving at approximately 15 mph, the contact observed smoke emanating from under the hood. The vehicle was driven to her work location and parked. Upon exiting the vehicle and opening the hood, she observed orange flames coming from the engine compartment. A parking attendant extinguished the fire, and a police and/or fire report was filed. The vehicle was towed to a dealer and diagnosed with a fuel line leak that caused the…

   NHTSA complaint #11738037 · source
2. Filed Dec 31, 2025FLFuel, Hybrid & EV Propulsion

   UNKNOWN it was just one day I started my car and turned the A/C on and I started getting this strong gasoline smell. I went on like a saw there is a recall for this problem for the M274 engines.

   NHTSA complaint #11708103 · source
3. Filed Oct 21, 2024TXEngineFuel, Hybrid & EV Propulsion

   my whole entire car smells like gas. I cannot drive this car around because I will pass out and it is a safety hazard. There is a recall for this exact same issue, just not for my Vin number. I would like to get this done for my car, please.

   NHTSA complaint #11621009 · source
4. Filed Aug 20, 2024NCEngineFuel, Hybrid & EV Propulsion

   Keep getting a code P052E! Changed the oil and code went away for a few days then came back. Looked into getting it fixed and it seems like Mercedes has known about this issue and hasn’t called for a recall on this piece of equipment! Very costly to fix and says it needs to be replaced every 30k to 50k miles! At around 1k to 3k to fix everytime that’s something they should recall

   NHTSA complaint #11609586 · source
5. Filed May 13, 2024100,000 miMSFuel, Hybrid & EV Propulsion

   The contact owns a 2017 Mercedes-Benz C300. The contact stated while driving at an undisclosed speed, the check engine warning light was illuminated but then disappeared. The vehicle was taken to an independent mechanic to be diagnosed. The vehicle was diagnosed with a failed actuator. The contact was informed that an actuator needed to be replaced. The vehicle was not repaired. The contact was informed of NHTSA Campaign Number: 21V961000 (Fuel System, Gasoline) however, the…

   NHTSA complaint #11588398 · source
6. Filed Jan 21, 2024MAFuel, Hybrid & EV Propulsion

   During cold starts the fuel injectors/clamps leak causing strong gasoline smell inside the cabin. After research online this is a common issue with W205 systems. I am beyond surprised this has not been investigated and reported as a safety recall as it can pose a fire hazard. Please investigate and Mercedes should be fixing this issue….

   NHTSA complaint #11566746 · source
7. Filed Jan 2, 2024NVFuel, Hybrid & EV Propulsion

   every winter this car will have a heavy smell of gas in the engine and the cabin, after driving it for around 15 minutes with the windows open in the cold it goes away. no problem in the summer time. My mechanic said it's a common problem with these cars.

   NHTSA complaint #11563051 · source
8. Filed Dec 19, 2023NYFuel, Hybrid & EV Propulsion

   There is a short rubber fuel line/hose in the engine compartment that is attached with compression clamps; the hose connects the fuel line from the gas tank to the high pressure fuel pump. When it gets cold outside (below ~40 degrees Fahrenheit) the clamps loosen a bit and the hose will leak gas The entire interior smells like gasoline, really bad.

   NHTSA complaint #11560813 · source
9. Filed Oct 31, 2023MDFuel, Hybrid & EV Propulsion

   I have a 2017 C 300 and it smells like gas when I turn my heat/ac on. I contacted Mercedes to see if there was a recall as this is a huge issue with many customers but Mercedes offered no assistance. The smell of gas is very dangerous and I think it's unfair to the customers that Mercedes has known about this problem but chose to do nothing.

   NHTSA complaint #11552831 · source
10. Filed Sep 25, 2023FLFuel, Hybrid & EV Propulsion

    My engine light comes on intermittently for days or weeks at a time. Code is P052E indicating an issue with the PCV valve. I'm waiting to replace the part.

    NHTSA complaint #11546465 · source
11. Filed Aug 1, 2023CAEngineFuel, Hybrid & EV Propulsion

    My Mercedes Benz stopped working. The mechanic shared it involves the: fault valve for crankcase ventilation has malfunction.

    NHTSA complaint #11535656 · source
12. Filed Jul 14, 2023CAFuel, Hybrid & EV Propulsion

    I got a check engine lite and the code said positive crankcase ventilation regulator valve. While doing research I am finding out that this is a very common problem on these cars, and very expensive to fix, I’ve never even heard of this problem happening to other cars. I think a recall is in order, thank you

    NHTSA complaint #11532311 · 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