Adjustment system for adjusting a vehicular component based on occupancy of a seat includes a support structure arranged underneath the seat to movably support the seat on a substrate in the vehicle, the support structure being structured and arranged to transfer a force exerted by the occupant on the support structure to the substrate, a sensor system arranged underneath the seat, optionally in connection with the support structure, for providing a variable output as a function of weight of the occupant, an adjustment system arranged in connection with the component for adjusting the component, and a processor for receiving outputs from the sensor system and directing the adjustment system to adjust the component based thereon. An object recognition or identification system or other morphological characteristic determining system may be used to determine that the occupant is one which requires adjustment of the component.