I really don't think that someone buying a $86k BMW is going to cross shop a Mustang. I could be wrong, but I think that the tools that buy BMW's are dead set on their Bavarian supremacy. On a one to one basis, the Mustang compares favorably, but will be the loser in fit and finish. For what it's worth, however, BMW electronic problems pay for my Boss.
Lexus recalls pay for my GT.