> Collision damage claims for large luxury vehicles are reported 13 percent more frequently than average, and those claims cost about 50 percent higher than average, the Highway Loss Data Institute said. The rear-wheel-drive Tesla Model S is involved in 46 percent more claims than average, and those claims cost more than twice than average, it said.
Go with the data then. Perhaps luxury car owners are more likely to make a claim from even a minor scratch? And since they are "luxury cars" there is more of a premium on repairs? Just throwing out guesses, but as I say they have the data and should charge as appropriate.