Big stone chip, evidence of rust starting

[MissChief]

This is just above the windscreen and it's the first time I've noticed it after washing it for the first time in months. Is there anything I can or should do? It's the only rust I can see on the car which is good for a 12 year old Leon Cupra 180. Sure there are the usual stone chips and some minor scratches but overall the bodywork is in great condition.

What can be done?

[steveo3002]

tickle it with a dremel or small screwdriver to clean it up best you can , then carefully touch in with some matching paint

[finlo]

Dab a touch of rust converter on it too.

[swisstoni]

If you just want to keep the car looking reasonable for a couple of years, the fixes mentioned are fine.
If you were hoping to keep the car a lot longer than that, it's not good enough because the rust will come back.

The rust will have very likely spread underneath the paint by a little bit, and so quite a lot more paint would need to be removed to get at all of it. And so there would be a lot more making good to be done.