A gasoline smell coming from your vehicle is never something to brush off—especially if you just filled up. While some causes are minor, others can be serious safety concerns. Knowing what the smell may indicate can help you take action before it turns into a bigger problem.
Loose or Damaged Gas Cap
One of the simplest causes of a gas smell is a loose, cracked or missing gas cap. If the cap doesn’t seal properly, fuel vapors can escape from the tank. This can create a noticeable odor and may even trigger a check engine light. Replacing or tightening the cap may solve the issue, but it’s still wise to have it inspected.
Fuel Leaks in Lines or Hoses
Fuel lines and hoses carry gasoline from the tank to the engine. Over time, they can crack, corrode or loosen. Even a small leak can produce a strong smell and increase the risk of fire, especially when the engine is warm.
Leaking Fuel Injectors or Seals
Fuel injectors deliver gasoline directly into the engine. If an injector or its seal is leaking, fuel can escape into the engine bay, creating a strong gas odor while driving or shortly after shutting off the vehicle.
EVAP System Problems
Your vehicle’s evaporative emissions (EVAP) system is designed to capture fuel vapors and prevent them from escaping into the air. When components like the purge valve or charcoal canister fail, those vapors can leak out and cause a noticeable smell.
When to Get It Checked
Occasional fuel odors during cold starts or short trips may be normal, but persistent smells are not. If you notice the smell regularly, it’s best to have your vehicle inspected right away.
At Fox Run Auto, we take fuel-related concerns seriously. Our technicians can quickly diagnose the cause of a gas smell and recommend safe, effective repairs. If your car smells like gas long after a fill up at the station, schedule an inspection with Fox Run Auto before a small issue becomes a major hazard. Call us at (302) 597-9205 or schedule an appointment online.