help flight rust? what to do about it?!?!?

Hello today I took a closer look at my Audi once bitsl (since my battery (at -12°) failed and I had to grope). I found out that I have a lot of flying rust around the wheel boxes already. What can I do about it? audio’s should be so “rust-insensitive”. What do you do against it. My is just white and there is something that is noticeable. (our passat also has powerful flugroßt only with the dark color falls on only when it is “to be late”) I can the away polisher en? or any other way to eliminate?? does not want to lose my new schützling/liebling to the rust immediately. Thanks MFG PS: is en B4 TDI