I have a A4 of 1997 which I bought second hand. I know that with Vag Com you can not change the displayed mileage of the car, however, there are devices, as I have seen in the internet and various shops, that they can do this. My question is if it is a way for me to check with Vag Com that the car mileage is changed or it is the original as the factory. I mean to know the true mileage of the car.