A vehicle is provided with a luggage compartment that houses an additional support unit having a loading floor, height-adjustable between a lowered position and at least one raised position; when in the raised position, the loading floor is supported, but can rotate upwards about a horizontal axis of rotation; the unit has two levers, which are hinged to a fixed structure about a first horizontal axis and to the loading floor about a second horizontal axis, which is set apart from the first horizontal axis by a variable distance.