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2012 Mercedes C250 coupe 1.8L turbo - gas smell

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Old Jan 10, 2023 | 04:55 PM
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2012 Mercedes C250 1.8L turbo
2012 Mercedes C250 coupe 1.8L turbo - gas smell
So my wife's car just started having a strong gas smell when the tank is filled up. It's strongest inside the car so I suspect the gas tank cover (under the rear seat) has a crack in it and also needs the gasket replaced. I went to the MB dealer and that plastic bolt on cover is sold only with a new fuel pump and it's like $800 CDN.

Was thinking about using plastic epoxy that is gasoline resistant. Have anyone done this before?

Richard
Last edited by Richard Koop; Jan 14, 2023 at 07:28 AM.
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Old Jan 14, 2023 | 03:22 PM
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2012 Mercedes C250 1.8L turbo
So I took a look at the top of the fuel tank under the rear seat. The fuel pump cover(s) (yes, there are 2 fuel pumps for my car) were fine and no leaks or smell. I crawled under the car and noticed the worst raw fuel smell coming from the driver's side rear (near the wheel well).

So probably a fuel line corroded or the point where the fuel filler tube connects to the tank is having an issue. Are fuel lines easy to replace? Can the job be dangerous?

Richard
Last edited by Richard Koop; Jan 15, 2023 at 07:46 AM.
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Old Aug 8, 2024 | 11:50 PM
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2014 C250 Sport
Same Issue and smell location
Did you get it fixed? Im having the exact same issue with my c250!
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Old Aug 9, 2024 | 01:19 PM
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2011 C300 4Matic Sport
There’s only 1 fuel pump. The 2 covers are fuel pump cover and fuel filter. I replaced both because of leaks.
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Old Aug 10, 2024 | 07:30 AM
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2012 Mercedes C250 1.8L turbo
Mine ended up being a rusted out line near the gas tank. I didn't fix it myself.
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Old Aug 10, 2024 | 07:35 AM
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2013 w204 c250 coupe & 2001 Dodge Ram 2500 24v Cummins
Originally Posted by Demvang
There’s only 1 fuel pump. The 2 covers are fuel pump cover and fuel filter. I replaced both because of leaks.
@Demvang do you have a coupe? Or a sedan w204?
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Old Aug 11, 2024 | 02:17 AM
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2011 C300 4Matic Sport
A sedan
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Old Aug 11, 2024 | 08:05 AM
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2013 w204 c250 coupe & 2001 Dodge Ram 2500 24v Cummins
Originally Posted by Demvang
A sedan
Thanks for confirming. I have a coupe and having trouble getting the rear bench off! I guess I really need to pull to get it unclipped.
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