In my 15 year old Ibiza I have seen that in some places (radius so 5-10cm) there are many small cracks in the paint. Looks like dried desert soil. But you have to look very carefully. From wide it looks like a slight dirt stain and is matt. Between the cracks it shimmers out silver, but it doesn’t rust. That there is no way to fix it completely is clear. Is there a way to alleviate it? Could there happen even more in the future (expansion, rust etc.)? Can such places be polished, or should they be avoided, which would of course look even more strange? Thank you for the answers.