[quote=”UTBMXCruiser” post=204159]For the sake of conversation, the worst car I’ve ever owned for this was my 05 Impala. It would throw 1 tenth of a mile more on the clock every 5 actual miles traveled. Imagine how many more miles added over the life of the car at 200K. Do the math on that. I think they do this to run the warranty out faster. I’m not sure how to figure that. My head hurts![/quote]
That’s only 2%.
FWIW, manufacturers who deliberately over-report the speed to the driver do not typically inflate the odometer as well.