I was going to say Jazz. Bt when we were looking for a car for our two offspring we tried one plus all of the Toyota, Citroen, etc mentioned in the thread. We ended up with a Hyundai i10. It does about 6000 miles a year, 45ish mpg even on short runs, costs buttons to insure and tax and is cheap to service.
Came with 50,000 miles on, now closer to 70,000 and outside normal serving, only had one biggish bill to replace an ABS sensor (which is a nightmare to get too).
It’s a great little car to drive as well, bit noisy but otherwise a really well sorted small but quite big inside car. Tiny boot tho.