Hi, I was just wondering if anyone could tell me what the situation is in relation to rust on the car exterior? My brother failed his car test because there was a very small hole in one of the car wings. The hole was rusted. He was told it was a visual fail refusal and that he should get it fixed and bring the car back to be inspected again for free, to make sure the problem was fixed. So why is that a fail refusal first off, and then, what repairs would be needed? Could one just sand it down, fill with polyfilla, sand and spray over the filling? Or is something more required?