Low mileage champs: My 88 Chevy pickup has about 35K original on it. It will rust out long before it wears out. It's a thirsty pig. I only use it for plowing, boat hauling and things that the XJ or the Merc. cannot do.
When I was a kid, my dad bought a brand new 58 CJ5, which I later inherited, briefly. When I sold it, I think it was up to 11 thousand miles. Once again, mostly plowing and woods work. Aside from being miserably uncomfortable, cold, dangerous and drafty, itwas no economy car either. Although it had that little 4-banger, with its short-geared 3-speed, it rarely got above 12 mpg even with Warn hubs on it. I loved it anyway, but by the time I sold it in 1974, the frame was full of holes and the tranny was about to fall out, and it needed a valve job!