Should I donate the value of the "muffler" part for which I received compensation from the insurance company, even though it was not damaged in the last accident, or should I return it to the insurance company? And does the damage assessment include the costs of repairing the car tire that was damaged while going to photograph the damages?

The answer summarizes what the aggrieved party is entitled to in a car accident: repair of the damage, costs for the depreciation in the car's value after repair, and car rental fees if it was a rented vehicle and became disabled. The insurance may not cover the repair of parts not damaged in the accident. If the insurance pays an amount exceeding what the aggrieved party is entitled to for repairing an undamaged part, the excess must be returned. As for repairing a disabled tire, the insurance does not cover it unless specific photographic evidence from a particular location was stipulated.