Damage problematic with the TÜV?

Hello dear motor talk’ler, now I need your expertise too… A few weeks ago I was driven by some jerk to my Skoda parked in front of the house. Of course he didn’t ring a bell to report the damage. Now I have had the damage checked and the repair costs put at 1500€. I am now faced with the decision to have the damage repaired about us insurance or to do a fictitious billing. Since the car has already 190.000km on the clock and 10 I tend to make a fictitious reckoning and would only have an achsvermessung carried out for safety reasons (where a damage on the axis is very unlikely). Now my question: do I come with such a damage over the TÜV or is that rather problematic? Btw: Blinker is a little loose but functional. Thank you and many greetings!