Abstract: An air-suspension system has at least one air spring arranged between a chassis and a vehicle component mounted relative to said chassis for movement along an oscillatory path. A control valve is arranged inside the air spring and has control positions for feeding, blocking and discharging compressed air in the air spring. The control valve is activated via a control element also arranged inside the air spring. A guideway of the control element acts on one of an outer tube air-spring subassembly and a rolling tube air-spring subassembly which are movable relative to one another. The control valve is designed as a rotary-slide valve and is activated via the guideway and a rotary-slide valve body. The guideway of the control element is shorter than the stroke length of the air spring, the one of the subassemblies which actuates the control element being in releasable operative connection with the control element.