Motor vehicle suspension system

A suspension system for a motor vehicle, comprising hydraulic supporting units acting between wheels of the motor vehicle and a body of the motor vehicle, and a hydraulic feed system operatively arranged between the supporting units and a self-acting control apparatus to allow hydraulic fluid to be displaced between the supporting units in order to control movements or positions of the motor vehicle body, wherein the hydraulic supporting units each have a body side first cylinder and a second cylinder operatively arranged to be telescopically displaced in the first cylinder to form controllable shock dampers, and a third cylinder arranged hydraulically displaceably on the first cylinder, are each arranged in series with a spring unit acting between one of the motor vehicle wheels and the motor vehicle body with a body-side abutment on the third cylinder and an abutment on the first cylinder for holding therebetween an associated one of the spring units and, in the event of a malfunction of the self-acting control apparatus, are settable to one central position between upper and lower end positions of the hydraulic supporting units;

• and the hydraulic feed system comprises a hydrostatic feed system which, in the event of the malfunction of the self-acting control apparatus, is settable to a position which is associated with one of the central position and the lower end position of the hydraulic units by emptying hydraulic fluid from the hydraulic units.