[robocat]

It does however lead to a lot more tampering with odometers.

In New Zealand diesel vehicles pay a significant tax per kilometre, and so there are a lot of people disconnecting odometers. There are even people for who their only income is from "rewinding" or reprogramming electronic odo readings (using a variety of techniques, sometimes cracking ECUs etcetera). There is some incentive to reduce recorded milage to enhance resale value, but a lot more incentive to reduce taxes. Edit: I could be a victim of selection bias here because most people will happily admit to ripping off the government while fewer people will admit to ripping of other individuals.

Large commercial vehicles have government mandated secondary odometers, which I haven't heard as much about tampering: maybe because tampering happens less, or maybe because the penalties are higher, or maybe it happens but I am not in the loop. Also the likelyhood of getting caught tampering truck odos is higher because trucks are stopped far more often than cars, and trucks are checked far more carefully.