Well a new Petrol Corsa starts at £19K, not £15K. And it has a claimed mpg of 51 (combined) for that model.
So you are saving £127 per 1000 miles, just over £500 per year if you are only doing 4K miles per year. Which means 30 years to save the £15K price difference on fuel costs alone.
That’s just horrible , hopefully costs will come down . The price difference on new is stupid . A nice hybrid petrol maybe a stop gap for me .