Abstract: In a motor vehicle, especially in passenger motor vehicles, its vehicle floor is constructed in the rear area rising toward the vehicle end for achieving a good traction of the vehicle; an air foil with an air foil profile is arranged in the rear diffusor formed thereby at a distance from the road surface that corresponds to the distance of the vehicle body in front of the vehicle rear section of the vehicle so that a negative lift becomes effective at the air foil with an in-flow of air coming from the vehicle front section.

Abstract: In a motor car with a flow stepped tail and air-conducting means in the form of a wing-spoiler combination, the flow stepped tail is constructed with an angle of inclination of the tail window which ensures a flow down from the rear edge of the roof and over the tail window free from flow separation and the wing (5) is disposed offset in front of and above the spoiler (6) secured to the tail in such a way that it is located in front of and above the area (18) subject to flow separation. In this connexion the wing (5) has a broad nose rounding (15), is arranged with its convex curvature (16) towards the tail window (3) and is disposed in an optimum position (28) and at an optimum angle of incidence (29). The wing (5) may preferably be connected to the spoiler (6) to form a structural unit by way of arms (7) running upwards and forwards along the frame of the tail window (3).

Abstract: In a motor car front end with an adjustable air-conducting means in the form of a nose apron which is arranged beneath the bumper and which may be tilted downwards about a transverse axis as a function of the velocity of travel, the nose apron (1) has a well rounded front edge (2) and its adjacent, tapering area is provided with reinforcing corrugations (3) and cooling air outlet ports (4). In its lowered position at high velocities of travel the nose apron (1) forms, relative to the road surface, a narrow Venturi cross-section (10) which causes an area of underpressure which results in a reduction of air resistance. In its raised position at low velocities of travel the nose apron (1) forms an ordinary angle of repose relative to the road surface and covers part of the radiator (22) from excessive throughflow.

Abstract: Exterior rear-view mirror for motor vehicles, with a streamlined housing and with a mirror adjustable therein.In an exterior rear-view mirror for motor vehicles, with a streamlined housing and with a mirror adjustable therein, the flow round which is improved via air-guide devices located on the housing in the form of air-guide surfaces, the streamlined housing (3, 5) is arranged, in a manner known per se, to rest against the front side window (2) and consists of a fixed housing part (5) circumscribing the mirror surface (4) and of a movable housing part (6) adjoining said fixed housing part and carrying the mirror (4), the fixed housing part (5) being provided, especially in its lower region, with an air-guide surface, the movable housing part (6) having a drawn-in outer contour and the air-guide surface (8) being arranged to prevent separation from this outer contour.