250 miles in my Merc estate costs £30 of which 64% or £19 is the fuel itself.
That's genuinely impressive, at £1.40/litre that equates to over 80mpg. I can see why you're not fussed about EVs.
The same distance in my Mini at 3.9m/KWh would cost £23 if I had to use grid power to charge it all. Even if I drove in 'Green Plus' mode (5m/KWh) it would cost £18 and require me to tootle around everywhere at a max of 50mph with no decent acceleration, and who wants to do that?
Mind you, 250 miles in the Landy costs around £70 in diesel (which is nearer £1.50 around us), so in comparison the Mini is still pretty cheap to run.