Involuntary accident with “tuned” Mofa

Hello, I hope you can clarify our regular table discussion a little bit. And this is about the following Zenario: Boy is hit with his registered scooter (from 50ccm to 25km/h) when trying a standing vehicle (PKW), which wants to turn left to overtake (or pass right) and comes to fall. The car pulled out before the turn (it was before) strongly to the right, when the scooter driver is right next to his mirror. Now comes the real hook. The “Mofa” runs just under 70 km/h is insured as 25s and the BE is issued on Mofa. Driver has a mofa test certificate. Police would take this damage and keep this technical change. What would the consequences be in case of a damage regulation? possible legal consequences? Damage (accepted) “Mofafahrer” Scratched disguise and several abrasions car…