Hello ! I would like to buy a used sprinter with factory built-in tachograph (MTCO 1324). Since I am interested in the “true” mileage of the car (it always likes to play around), it would be interesting to know to what extent the mileage of the MTCO is manipulable or to what extent one can trust the mileage stored there. As far as I understand, the mileage is stored in the tachograph and passed on to the comb instrument? Is it possible to take a tachograph from one car into another and then show the speedometer its mileage – whereby the speedometer could then be adjusted to that of the MTCO? Is it possible to find out which MTCO was originally installed in which car (serial number or similar) ? I also read that the speedometer is probably sealed. Who can/should solve this seal or new? How can it be determined for a layman whether this seal has been changed or what does this seal (sticker, clip) consist of? Are there other ways (also in connection with the MTCO) to find out how high the actual mileage is? Apparently all the memory of the car can be overwritten … ? Thank you for your help MfG Hanno