When a trailor pulls a car behind it, does the miles on the cars odometer go up?
^^^^^^ You both missed the idea…. it isn’t that there would be extra miles beyond that of a trip or that the car is pulling the trailer. The idea is if you’d be pulling the car with a tow dolly or tow bar behind an RV that if while powered off and in neutral, would the car accumulate mileage. Unfortunately, I don’t know. If it’s an electronic odometer, I would have to imagine the answer would be no. If there’s no power applied to the sensor or the computer, there would be no mechanism for the change. If it’s a mechanical odometer, then it would presumably be a small generator that would send voltage and operate the mechanism that rolls the numbers over. If the voltage would get to the odometer, then yes. If with the engine off the circuit would be broken, then no. Best way to completely eliminate the problem would be to rent a car trailer that keeps all four wheels off the ground. Uhaul has them (limited capacity. cars are usually fine, truck/van/suv not so much but the website has c