200k+ was common, even in the 80s, if you followed the recommended maintenance schedule.
Lots of people... don't.
Lots of people... don't.
As a broad and imprecise statement, American cars in the 80s rarely ran past 100k, while Japanese cars commonly did. I read a few stories of American cars reaching 200k, but I saw a lot of Toyotas sailing past 200k.
And considering how awfully I saw those Toyotas treated, I don't think it had anything to do with maintenance.
Detroit, moreover, built itself a reputation in the 70s and early-to-mid 80s for building overpriced junkbox boat-anchors, which continues to this day.