I chose coverage and being happy over reliability.
My roommate has had some warranty work on his 2 year old focus ST. And he babies the ever loving crap out of it. I would have burned out 2 sets of tires by now. He still has his originals and. Snows.
Friend got a new Chevy truck and it's literally falling apart. Just parts coming off. Inside and out.
I guess what I'm saying is that I don't trust any manufacturers at the moment. FI being crammed down everyone's throat has caused a lot of problems.
The engine in the 550 (the turbo V8 with reverse flow) has since had 2 revisions and less than half the problems after they remade it.
It's super obvious that manufacturers were forced into making vehicles they were not ready to. They are using their consumers and the warranty as a stop gap. Audi and Benz are now forced to have 100k warranties.
I agree that GM is probably the most reliable as when it comes to engines, but boy, are they just put together like crap otherwise.