actually. i've put about 20 miles on it. b4 i messed with the sensor it would sporatically work, and it would slowly turn and put some miles down. i have not reset the trip odo since i've had my car... and its at about 20 now these days. And im never gonna sell me car unless i totall it, so im not worried about the milage and rippin someone off. it would be rebuilt b4 then anyhow.