I am somewhat skeptical why the manufactures haven’t stamped this out, there must be an advantage to them not doing so.
Maybe with the massive growth of PCP deal and the likes, it isn’t in there interest to have cars come back with high miles, whilst they can charge for the additional mileage what do they do with them then? I bet they would rather have a low mileage example come back in which they could retail on through there dealer networks.
Call my synclinal.