In 2021 there were just under 400,000 battery cars on the road in the UK plus 350,000 plug-in hybrids out of a total of 33 million cars in total.
Chances of your battery car catching fire 25/400,000 or 1 in 16,000
Chances of your petrol/diesel car catching fire 1529/in 33,000,000 or 1 in 21,582...