Bedfordshire Fire & Rescue have confirmed this is a myth – there is no evidence to prove that hand sanitisers cause vehicle fires in the hot weather!
There have been a number of reports of hand sanitiser being the cause of fires when left in vehicles in the hot weather the UK is currently experiencing.
The alcohol hand sanitiser is becoming heated resulting in flammable vapours being released. These vapours are reaching their ‘flashpoint’ and then ignite in normal air conditions, setting fire to flammable components within the car.
Please see below for further information: