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Discussion Starter · #1 ·
Hello everyone,

I’ve been on the highway with my 2019 Mazda 3 on petrol and stopped for refuel. When I’ve opened the fuel tank, I felt pressure coming out and a noise like you open a bottle of sparkling water.
Also when I stop the engine and start it again, the fuel indicator shows me different range and quantity.

Does anyone have this problem?

Thank you!
 

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Something may be not right with the pressure release valve or something else. It's hard to guess. May need to take it in. How much are you filling up? It's not a good idea to fill to the brim.
 

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I'm having a similiar issue. Have a brand new hatchback that I haven't refilled yet, but every time I start the car the fuel level changes and usually goes up for a while before adjusting down. Never had this issue on previous cars, so concerned something is wrong with the sensor as it's hard to guage how much fuel is left.
 
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