On my tailgate I have 2 areas where a gold colour is appearing - under the centre brake light at the top, and below the rear window glass.
The paint here is unchipped, unbroken.
I would have to guess that rust is forming underneath the paint here, as I jet wash the car each week, and hand wash frequently too (it's not dirt!).
What is the deal with this, where do I stand? I have the autoglym treatment applied.