I've come across several articles indicating that China is the biggest (or second biggest) auto manufacturing country in the world right now. Not only do they manufacture cars from Chinese companies they also manufacturer BMWs, Mercedes, Toyotas etc etc.
The thing is most if not all BMWs, Toyotas etc manufactured in China are for consumption in China...they are not exported.
And let's be realistic "Made in China" goods today are not the same as "Made in China" goods from 10 years ago. Just look at your iPhones.
That being said if i am buying a "luxury" item i want it to be made in Italy or Germany or Japan etc
But that is more for the "cache" of having the item made there and not because of the actual quality (ok partially because of the actual quality).