Presented here is a self-tracking mechanism for vehicles by data acquisition method from whell motion. The basic technique involved here is deducing the position of the vehicle continously with respect to time, in any given terrain by constantly acquiring data of the wheel motion from various parts of the wheel and the components attached to it. The data thus obtained is amalgamated to get the current position of the vehicle. Most of the robotic vehicles, which are being employed for land roving into unknown terrains, do not get proper GPS connection due to dense forest coverage or other terrain constrains. Furthermore, this mechanism can be employed for spy robots within a building and in areas where GPS and other satellite wireless linkages are very low. The whole system exploits the three-dimensional cartesian coordinate system for tracking and calculating the current position of the vehicle with respect to the starting point.