When you look at vehicle fires as a percentage of vehicle registered, you'll see EVs are more likely to catch fire. Considering EVs are 1/3 the age of ICE vehicle this is pretty staggering. For example, in London, England in 2019, EVs were 2.5x more likely to catch fire than ICE vehicles. .1% vs .04%.
Data obtained through a Freedom of Information (FOI) request revealed that in 2019 the London Fire Brigade dealt with 54 electric vehicle fires compared with 1,898 petrol and diesel fires.
Vehicle registration numbers from the Department for Transport (DfT) show there are 50,000-plus plug-in cars licensed in the capital out of a total 4.63 million licensed cars.
Looking at the London Fire Brigade data, that would suggest an incident rate of 0.04% for petrol and diesel car fires, while the rate for plug-in vehicle is more than double at 0.1%. So far this year, there have been 1,021 petrol and diesel fires and 27 EV fires in the capital.