When they stop breaking down after 2-3 yrs.
I'm surrounded by mechanics in my friends and family, and they all have their differing opinions.
The one good Ford we've owned was an old ford station wagon, and it had a mitsubish motor in it :lol:
My mom's chevy camaro and dad's chevy 2500 have had problems since day one. My aunt/uncle had an explorer that they had to replace and engine and a transmission within 6 months. My dad had an old piece mitsu truck a few years back, and that thing ran for ages. Unlike his ranger, which was much more reliable than his 2500, but still had its own set of issues.
The only American made car I'd buy is cadillac. The rest of them are made in mexico anyway. Many of the top foreign car manufacturers have their main factories here, in the US...they got it right, why don't the US companies like ford/chevy get it?
Now, dont' get me wrong, this is a pretty recent development. You still see 40yr old chevy trucks runnin' strong all the time.