A modular tail assembly for a motor vehicle can include a tail-side frame element and a tailgate. The frame element is configured to form a part of a tail-side vehicle frame and be detachably fastened to another part of the vehicle frame. A motor vehicle can include the modular tail assembly. The motor vehicle has a vehicle body which is formed so that a cargo tray is arranged in the region of a tail-side vehicle trunk. The modular tail assembly can facilitate easier and quicker tail-side loading of a motor vehicle and can increase the storage space available for loading within a motor vehicle.