Why Can't You Use Your Phone at a Petrol Station?

You've probably seen the sign at every petrol station telling you to switch off your phone while refuelling. The reasoning goes back to concerns about phones causing a spark that could ignite fuel vapour, but the real picture is a bit more nuanced.

Where the rule came from

Early mobile phones were thought to potentially generate small electrical sparks or interference that could ignite fuel vapours in an enclosed space. Petrol vapour is flammable and can ignite from a small spark under the right conditions, so the precaution was treated seriously and written into fuel safety signage across most countries, including Australia.

Is it actually a real risk with modern phones

Extensive testing over the years has found no confirmed case of a phone actually causing a fire at a petrol station. Modern phones are far better shielded than older models. That said, the warning signs haven't been removed, and most fuel companies still ask customers not to use phones while filling up.

The more real risks at a petrol station

• Static electricity: getting back into your car and touching the fuel nozzle again can create a small static discharge, which is a more credible ignition risk than a phone.
• Distraction: being on a call or looking at your phone while pumping fuel increases the chance of a spill or leaving the nozzle unattended.
• Smoking or naked flames: still the most serious and well documented ignition risk at any fuel station.

The practical takeaway

Whether or not a phone can genuinely cause a fire, it costs nothing to put it away for the minute or two it takes to refuel. It also means you're actually paying attention to the pump, which matters more than the phone risk itself.