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uk Transport & mobility emergencies smell of petrol parked car • fuel smell around vehicle • petrol fumes outside car • petrol smell in garage • car smells of fuel when off • fuel leak while parked • diesel smell near car • strong petrol odour by car • petrol smell after refuelling • fuel cap smell petrol • petrol smell near wheels • puddle under car smells petrol • parked car fuel vapour • petrol odour driveway • fuel smell in enclosed parking • fuel smell near boot area • petrol smell near engine bay • smell of fuel by fuel door

What to do if…
you smell petrol or fuel around your vehicle while it is parked

Short answer

Assume a possible fuel leak: don’t start the vehicle, move people away from fumes, and arrange breakdown recovery or a mechanic. If there’s visible pooling/dripping, the smell is worsening, it’s in an enclosed/attached garage, or anyone feels unwell, call 999 and get to fresh air.

Do not do these things

  • Do not start the engine “just to move it a bit” if you can smell fuel.
  • Do not smoke, vape, or use naked flames anywhere near the vehicle.
  • Do not use jump leads, chargers, power tools, or anything that could spark close to the fumes.
  • Do not stay in a garage/underground car park breathing fumes.
  • Do not try to “patch” a fuel line or tank yourself while fumes are present.

What to do now

  1. Create a safer buffer. Move yourself and others several metres away (more if the smell is strong). Keep children and pets well back.
  2. Reduce ignition risk and get fresh air.
    • No smoking/flames.
    • If the vehicle is in a garage or enclosed parking, leave that space and, if it’s safe, ventilate by opening the main door/exit to disperse fumes (avoid fiddling with electrics right next to strong fumes).
    • If it’s an attached garage and fumes are strong, consider stepping outside the house with everyone and call 999.
  3. Do a quick, low-risk check from standing height.
    • Look for a fresh puddle under the vehicle or a damp trail.
    • Notice where the smell is strongest: fuel filler cap area, rear/underbody, or engine bay.
  4. If you have just refuelled and it feels safe to approach: check the petrol cap is properly seated/closed and step back. If the smell remains strong or you see liquid fuel, stop and move away again.
  5. Do not drive it. Arrange help instead.
    • Use your breakdown provider for recovery (tell them you suspect a fuel leak).
    • Or arrange a tow to a garage / mobile mechanic. Keep the car parked until assessed.
  6. Escalate if it feels unsafe. Call 999 if you see dripping/flowing fuel, smell is strong or increasing (especially indoors), or anyone feels dizzy/headachy/nauseous.
  7. If fuel has spilled onto a public road or is creating a hazard:
    • If there’s immediate danger, call 999.
    • Otherwise, report a road spillage to the relevant highway authority (for motorways and many major A roads in England, this is National Highways; other roads are usually the local highway authority/council).
  8. If fuel is getting into a drain, river, or soil (or you’re not sure):
    • In England, report pollution incidents to the Environment Agency incident hotline: 0800 80 70 60 (24-hour).
    • (In other UK nations, environmental regulators differ; if you’re unsure and it’s urgent, default to 999 for immediate risk.)

What can wait

  • You do not need to diagnose the exact part that’s leaking right now.
  • You do not need to decide on repairs, costs, or where to get it fixed until the vehicle is safe and assessed.
  • You do not need to clean up a significant spill yourself—prioritise safety and the right responders.

Important reassurance

Fuel odour can sometimes be from something simple (like a cap not sealed after refuelling), but it can also signal a real leak. The safest first move is the same either way: don’t start the car and get it checked.

Scope note

This is first-steps guidance to reduce fire risk and prevent a bad first action. A mechanic or recovery service may need to inspect the fuel system before the vehicle is used again.

Important note

This is general safety information, not a substitute for professional assessment. If you think there is immediate danger, treat it as an emergency and contact the emergency services.

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