The present invention is a breakaway mounting bracket assembly for a wiper system that displaces components of the wiper system below the impact line of a vehicle in the event of, for example, a vehicle-pedestrian impact. The assembly includes a mounting bracket and a grommet removably attached to the mounting bracket. The assembly also includes a ferrule disposed within the grommet that includes a column having an internal passage and a platform connected to the column. The assembly also includes an attachment member to connect the mounting bracket to the vehicle where the attachment member includes a body engaged to the internal passage. The platform breaks away from the column in the event of a predetermined load acting on the pivot shaft assembly, which disconnects the grommet from the ferrule and thereby displaces the pivot shaft assembly and a portion of a wiper arm below the impact line of a vehicle.