I still say, you have to decide what is an acceptable age/milage for any given repairs. Transmission/engine blows before 100k: unacceptable. Transmission/engine blows at 500k: perfectly acceptable. Where does it become acceptable? 150k, 200k, 300k? Likewise, when is an a/c compressor allowed to go, or a wheel bearing, or a ___.
And of course, that limit is a moving target. Or it was, anyhow. It was moving out, but today I think those age/miles are dropping, as manufacturers try to make items which are not over-designed/over-weight/over-costly.
The worst part of imports is likely the rust issues. They're better, but IMO rust issues are still there.