Originally Posted by
Lotz-A-Landies
Make the claim directly with the other parties insurance company.
Remember their insurance company is responsible for the damage caused by their insured, they do not have any ownership rights over your car.
Don't let them bamboozle you with market value of your son's car that is irrelevant, they are responsible to pay for the repairs necessary to bring your son's car back to the condition immediately before the Mercedes hit it, whatever it costs to make that repair.
Even if they pay out the car's full market value for the claim, they have no right to claim the wreck as you do not have any contract with them.
Don't let the car be taken out of your possession and if it's at a smash repairer, instruct them that it is not to be removed except with your/your son's permission. Once the other company has your son's car you will never get it back.