Its bizarre the hate your getting for this comment.

You can get a used Hyundai Kona EV from Hyundai for under £15k.

https://used.hyundai.co.uk/en/used-car-search/hyundai/kona/k...

Even going off your £18k price, a car loan search shows it would be under £200 per month. Not sure where they pulled £600 from.

But filling up my wife's compact Peugeot 208 (I think?) was £75 over the weekend. Filling up twice is almost the same monthly cost as buying a larger electric SUV.

It definitely seems like it would be worth investigating your options.