A vehicle bumper assembly having an outer surface and is a bumper having an opening and a lighting optical assembly engaging the opening is provided. The lighting optical assembly has a front wall, defining part of the outer surface, and a rear shell, which supports the front wall and comprises at least one connecting portion fixed to the bumper. The bumper assembly has an additional coupling element, which has an end fixed to the bumper and a supporting portion set behind the rear shell and is set astride of the rear shell. The material, shape, and dimensions of the additional coupling element are such as to render it elastically deformable in the event of impact at a relatively low speed.