And depends how you drive the thing.
When I were a lad if it was raining the car would be rusting through by the time you had driven it home from the showroom. If the body lasted 60k miles the big ends certainly wouldn't. These modern cars and the oils you put in them are marvellous contraptions in comparison.
I reckon the useful life of a well looked after mondeo is around 200k miles, to get more you will need to be replacing expensive parts and cheaper to buy another one.
The fuels help a lot too. Who would be bothered with regularly de-coking their engines now?
Ford certainly got it right with rust protection on the early Mondeos. By contrast, the Cortinas could get rusty, but the Sierra was in a league of it's own. It seemed to share the Cortina's poor rustproofing, but the metal was thinner. Once you saw surface rust, it was through in no time.
It's not all good news with modern cars though. The bodies of older cars may be sound, but once the electrics start going haywire, they get too expensive to fix.