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A spoiler for a motor vehicle, in particular a passenger vehicle, is mounted in the rear-end area on the vehicle and comprises a spoiler element which is movable from a resting position in which it is integrated into the shape of the rear-end area and into an extended operating position. To further

A spoiler for a motor vehicle, in particular a passenger vehicle, is mounted in the rear-end area on the vehicle and comprises a spoiler element which is movable from a resting position in which it is integrated into the shape of the rear-end area and into an extended operating position. To further improve upon the aerodynamic properties of the spoiler in particular the downward pressure on the rear axle, the spoiler element has a greater transverse extent in the extended operating position than in the retracted resting position.

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What is claimed: 1. A spoiler for a motor vehicle situated in a rear-end area of the vehicle, transverse to a longitudinal direction of the vehicle, comprising: a spoiler element movable when fixed on the motor vehicle from a retracted resting position into an extended operating position, wherein t

What is claimed: 1. A spoiler for a motor vehicle situated in a rear-end area of the vehicle, transverse to a longitudinal direction of the vehicle, comprising: a spoiler element movable when fixed on the motor vehicle from a retracted resting position into an extended operating position, wherein the spoiler element in the extended operating position has a greater transverse extent than in the retracted resting position, the movable spoiler element comprises multiple transverse parts, at least individual parts of the spoiler element being transversely movable, the spoiler element has a central part and two transversely movable extension parts, when in the retracted resting position, the two transversely movable extension parts are positioned at least in part over the central part and are in mutual contact in the area of the longitudinal central plane of the vehicle, and the central part extends between the two transversely movable extension parts when in the extended operating position. 2. A spoiler for a motor vehicle situated in a rear-end area of the vehicle, transverse to a longitudinal direction of the vehicle, comprising: a spoiler element movable when fixed on the motor vehicle from a retracted resting position into an extended operating position, wherein the spoiler element in the extended operating position has a greater transverse extent than in the retracted resting position, and wherein in the movable spoiler element comprises multiple transverse parts, including a center part having upper and lower exterior surfaces, at least individual parts of the spoiler element being transversely movable, and wherein when in the retracted resting position the movable transverse parts are stored over the upper exterior surface of the center part of the movable spoiler element. 3. A spoiler for a motor vehicle situated in a rear-end area of the vehicle, transverse to a longitudinal direction of the vehicle, comprising: a spoiler element movable when fixed on the motor vehicle from a retracted resting position into an extended operating position, wherein the spoiler element in the extended operating position has a greater transverse extent than in the retracted resting position, and wherein in the movable spoiler element comprises multiple transverse parts, including a center part having upper and lower exterior surfaces, at least individual parts of the spoiler element being transversely movable, and wherein when in the retracted resting position, the movable transverse parts are stored under the lower exterior surface of the center part of the moveable spoiler element. 4. The spoiler as claimed in claim 3, wherein the movable spoiler element is formed by a rear spoiler. 5. The spoiler as claimed in claim 3, wherein the movable spoiler element is shaped as an airfoil wing. 6. The spoiler as claimed in claim 3, wherein the spoiler element has a central part and two transversely movable extension parts at transversely opposite ends of the central part. 7. The spoiler as claimed in claim 6, wherein the two transversely movable extension parts are arranged to move transversely by telescoping motion relative to the central part. 8. The spoiler as claimed in claim 6, wherein the two transversely movable extension parts are arranged to move into the central part in the retracted resting position.