 on my 2013 mustang there is bubbling on the front of the hood. Ford will not cover repair as my car is out of warranty, even though the corrosion took place while the car was under warranty. (it expired a month ago). After reading on internet, several owners have had the same problem with the corrosion/paint bubbling happening around 36k miles or just after warranty expired. This is a Ford Problem, not a maintenance issue or where the car is driven. Do a search and you will see. Do not purchase a Mustang with aluminum hood or you will end up paying about 2k to fix it yourself. Ford takes no ownership of this problem.