Abstract: A vehicular automatic occupant sensing anti-carjacking system primarily designed to automatically and continuously protect a vehicle from carjacking and to provide preventive protection to the authorized occupant of the vehicle from being taken hostage in their own vehicle and to facilitate the recovery of a vehicle during a carjacking regardless, whether the vehicle is occupied or unoccupied, regardless, whether the vehicle is attended or unattended, regardless, whether the ignition is on or off and regardless, whether the engine is running or not running. The system includes an electronic Command Control Unit which communicates with a plurality of sensors to provide the necessary input signals to the command control unit. The system has a means for automatically monitoring and determining the occupancy status of the vehicle via pre-programed occupancy status instructions.