Quote:
GM tried sticking under sized engines in over sized vehicles in the late 80s and early 90s, these vehicles really didn't get noticeably better fuel economy than their larger engine counter parts.
These little engines just got ran a lot harder than the V8 motors and went to the junk yards sooner.
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If they were driven properly- not WOT all the time- the strategy probably would have worked and the longevity fine too.