Why is there a gasoline smell in the car?

2 Answers
Herb
07/29/25 6:21am
Reasons for gasoline smell in the car: 1. Overfilling of gasoline or gasoline leakage. If the tank is filled to the brim, driving on rough roads may cause a strong gasoline smell inside the vehicle; 2. Driving with the external air circulation on. Gasoline fumes may enter the cabin through the external circulation system. Simply turning off the external circulation and driving for a while will make the smell disappear naturally. If there's a fuel line leak, gasoline odor may also enter through the air conditioning system. If you detect gasoline smell while driving, immediately stop and inspect the vehicle. Open the engine compartment to check fuel line pipes. If damage is found, call for roadside assistance as this situation can be dangerous.
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AdelineMarie
08/12/25 9:48am
A few days ago, I suddenly smelled a strong gasoline odor in my car and immediately pulled over to check. There could be several possible causes, with the most common being a loose fuel cap—once after refueling, I casually closed it and gas leaked out. Other issues like a leaking fuel line, damaged fuel tank, or even aging fuel injectors can cause gasoline to seep out. If the carbon canister in the ventilation system is clogged, the smell can also backflow. I think this needs immediate attention; the moment gasoline odor appears, there's a fire risk, especially in summer when temperatures are high. For a quick self-check, first see if the fuel cap is loose, then open the hood to sniff for any unusual smells. If you can't locate the source, don't hesitate—head straight to a repair shop. Safety comes first. Always remember to tighten the cap properly when refueling, and regular maintenance can prevent such troubles.
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