For tracking and diagnostics of the vehicle, we developed low-cost device called LogTrack with simple integration, high reliability and the possibility of connection of external devices. The device integrates voltage protection circuit and a smaller battery, which allows autonomy in case of a blackout or special cases, such as cold-crank or battery failures. Depending on the type of the device, a CAN/RS485/RS232 communication bus is available. It can be adapted to a certain protocol with user communication parameters.