A luggage box for storage in a luggage space of a motor vehicle comprises a container open at a top and adapted to be held slideably by a respective pair of guide elements between a pair of parallel guide rails secured one each to a respective side wall of the luggage space. The container is coupled to a lid via a hinge portion. The lid has a size and shape complementary to the open top of the container, which size and shape corresponds to an area behind one or more backrests of a row of vehicle seats between second guide rail sections, which extend along the backrests towards a floor of the luggage space. The luggage box is translatable in the guide rails, to a position adjacent the backrests of the vehicle seats.