Depends on the vehicle. I know our 2018 Hyundai Elantra sport does not roll miles while towing.
I do track the towed miles for tire rotation, brake checks, etc though.
Lynn & Dennis
Nights Camped 2017 - 35 / 2018 - 15
2014 3051S - First RV for us
2018 Hyundai Elantra Sport Toad
2015 Harley CVO (retirement bike
2015 Challenger ( Wife's Toy)