What does anyone out there get MPG wise on their cars so I can assume things
are OK before I start looking for problems and doing un-needed DIY work on
the car?

9 yr old 1.3L Hyundai accent here, gets 34-36mpg regularly, low 40's
on a run.

My previous cars - Citroen AX and Citroen ZX (both were ****e, despite
buying them new) did about the same IIRC

Prior to that, I had a 6(?) year old Skoda Estelle 1.3L which was
heavy on the juice, and I never did figure out why - 22mpg or
thereabouts around town :-}