This is a Golf 6 TSI we did this past July.
Here we removed some vicious tree sap (that was four months old or hard take your pick!) with some spot sanding for deeper scratches.
While some areas (see pics: wheel arch scratches) needed to be repaired via respray, the improvements via polishing was substantial.
The end result left the client exclaiming the results was better than when he bought it (and that was brand new!) I’m always happy to hear compliments like that!