My friend has one, and she uses it for journeys similar to yours. At the moment she gets around 90mpg. When she does motorway driving it’s well over 100mpg.
I can’t answer the other questions I’m afraid but I’m sure someone will be able to.
It’s a great car, surprisingly spacious and the boot can fit my folded wheelchair easily. The fold up cinema style seats are a great idea too.
Only reason I’ve discounted it is it’s too low for me to comfortably get in and out of. If only the Honda CRV was available on the Scheme…