Abstract: A motor vehicle having a freight compartment having a floor and a seat having a seat back with a rear seat-back surface movable between a vertical position and a horizontal position, a load-retaining system has arrays of mounting formations on the floor and seat back. The formations of the arrays all are identically spaced within the respective arrays. A mounting plate has a bottom face formed with a plurality of mounting formations engageable in the mounting formations of the arrays and spaced identically to the mounting formations of the arrays. The mounting plate further has a top face formed with an array of mounting formations spaced identically to the mounting formations of the arrays. A device plate has a bottom face formed with a plurality of mounting formations engageable in the mounting formations of the arrays and of the mounting plate top face and a top face. A freight-holding device is fixed to the top face of the device plate.