Abstract: A spoiler assembly that is adapted to be connected to the hitch of a vehicle. The spoiler assembly includes a coupling member adapted to be coupled with the vehicle's hitch, an intermediate portion extending upwardly from the coupling portion, a spoiler portion having opposite ends that is connected to the intermediate portion, and at least two stabilization members. The intermediate portion has first and second sections that are in a telescoping relationship to provide adjustability in a vertical direction. The spoiler portion includes a cross bar affixed to the second portion of the intermediate portion, a spoiler, and a plurality of adjustment members that are affixed to the spoiler. The adjustment members each have an opening defined therethrough that collectively receive the cross bar. The adjustment members also each include at least one threaded fastener that can be tightened and loosened to allow the spoiler to be movable relative to the cross bar.