It may be that state law where you live allows for such a calculation. If so, it's a new one to me.

In the states I've lived in, there is no allowance for the depreciation of value that might be caused by an accident. You're entitled to compensation for actual losses, not hypothetical ones.

I doubt, though, that replacing door would depreciate a car's value much, if any. Get whacked from the rear and that's another matter. Good luck.