Only so much testing can be done before going to production. No matter how many tests and miles are logged, that all changes and things happen once the car is in the tens of thousands and in the general population. Ever increasingly complicated vehicles do not help matters. The more stuff there is, the more stuff there is that can break too. It's a double edged sword for sure. Also, things such as supplier issues cannot be predicted, and tend to be the most common cause of failures, in my experience at least. Nobody can predict when a bad run will occur, and sometimes QC falters when they have to do mass production instead of the small batches for R&D test vehicles.
I know this forum really does make it seem like the 2011+ Mustang is the biggest, cheapest, POS and they all will have problems, but please visit some competitor websites. It'll be a very sobering experience, I can assure you that. Check out Camaro5, and Google some of the Challenger, 370Z, and other competitor cars forums.
Some of you will probably never want to buy any car again after seeing the over exaggerated, mass hysteria problems they all or 90% supposedly have based on a forum poll or the like. I know quite a few are freaking out about our issues and turning away. Best of luck with that.
Wait till they see the other guys.... If that isn't proof that the voiced sample in forums is a minority, then every car really IS a POS in this and every other car category. As for the evil car companies way of handling things, get ready for some deja vu as you read there issues. They all pull the same crap.
If I were to base everything about the Camaro off of a Camaro forum for example, I'd think everyone will lose an oil pump or have an HVAC failure, etc. I do feel for those with a problem, but any potential buyer or anyone else needs to keep things in context and take them with a grain of salt. No sense living in worry and fear, it sure won't get you anywhere. If it isn't a notchy shift, it'll be a sticking oil pump reg valve or axle breakage or something else to worry about.