The invention relates to a doorstop, in particular for motor vehicles with a door retaining rod (1), arranged parallel to the door pivot, pivoted on a door assembly piece, door, or door column and a retainer piece (2) fixed to the other door assembly piece, whereby said retainer piece (2) and the door retaining rod (1) which passes therethrough are movably connected to each other by means of a stop device which determines particular door opening positions. The stop device comprises brake- and/or stop bodies (3), which are movably supported in the retainer piece against a spring force relative to the door retainer rod (1) and are thus pre-tensioned against brake ramps (4) and catch depressions (5) on at least one side of the door retainer rod (1), arranged perpendicular to the direction of movement. The retainer piece (2) comprises a plastic housing (10) with an opening (13) for the door retainer rod (1) and openings (25), perpendicular to the above opening and parallel to the pivot axis, for the brake and/or stop bodies (3) which slide therein. The brake and/or stop bodies (3) are sliding bodies in the form of a hollow cylinder (19), closed at one end by means of a semi-circular cap (14), which in the open end thereof accepts a pressure spring (12) which bears on the closing cap (14).