Can someone help me, please?

Dear community, recently I had an unindebted accident, the cause of the accident had completely disregarded the advance. everz has engaged a lawyer in the opposing insurance. a expert has inspected my car and since then it is standing in the workshop, according to reports no longer traffic-proof. the car, however, belongs to my parents. now the question arises to me, when it comes to a legal dispute, to what extent and for how long the loss of use In my opinion, for the entire period in which I cannot use the car. Furthermore, I wonder how this is done with the minimisation of damage (whether and to what extent my parents may have to pay for it in order to limit the damage). can someone please help me? many greetings weeman