Seriously considering taking the leap, considered opinions welcome

Hi all. I am currently the happy owner of a Skoda superb that is returning about 60mpg over about 20k miles per annum. It's big and comfy but I know the dreaded clutch, timing belt and new tyres are on the horizon. I would expect to get 12k for the car on the current market

I have been dabbling in this community and have looked at Kia Nero's for around the 17k mark, the maths would suggest I can save about 2.5k annually on my fuel costs. I am also lucky that I have a private driveway and easy access to the electric cabinet close to an outside wall.

My anxiety is around unexpected bills for an electric car, I know the batteries come with good warranties but are there other unexpected costs in running in 20k miles a year apart from the tyres?

Would you agree my maths make sense around savings and would anyone have suggestions for a car between 15 and 18 k? My daily commute is 75 miles total and I would not expect that to change any time soon .

Thanks for your advice