Window lift system for a motor vehicle, comprising a first guide rail having a first stop in an upper end region; comprising a second guide rail having a second stop in an upper end region; comprising a first sliding block guided on the first guide rail; comprising a second sliding block guided on the second guide rail; comprising a cable drum; and comprising a drive cable, which can be driven by means of the cable drum, is coupled to the sliding blocks (4; 5), and is guided between the upper end region of the second guide rail and a lower end region of the first guide rail in a Bowden outer tube, the sliding blocks (4; 5) being movable along the guide rails (2; 3) into a stop position by way of the drive cable, characterised - in that a first cable portion of the drive cable is coupled to the first sliding block, is guided via an upper first cable deflector, arranged in the upper end region of the first guide rail, to the cable drum and from there via a lower second cable deflector, arranged in a lower end region of the second guide rail, to the second sliding block, and is coupled to the second sliding block, - in that a second cable portion of the drive cable is coupled to the second sliding block, is guided via an upper second cable deflector, arranged in the upper end region of the second guide rail, and via a lower first cable deflector, arranged in the lower end region of the first guide rail, to the first sliding block, and is coupled to the first sliding block, - in that, in the stop position, the second sliding block is positioned against the second stop and the first sliding block is arranged at a predetermined distance from the first stop, and - in that the predetermined distance is in a range between 0.4 percent and 1.2 percent of a length of the Bowden outer tube. comprising a first guide rail having a first stop in an upper end region; comprising a second guide rail having a second stop in an upper end region; comprising a first sliding block guided on the first guide rail; comprising a second sliding block guided on the second guide rail; comprising a cable drum; and comprising a drive cable, which can be driven by means of the cable drum, is coupled to the sliding blocks (4; 5), and is guided between the upper end region of the second guide rail and a lower end region of the first guide rail in a Bowden outer tube, the sliding blocks (4; 5) being movable along the guide rails (2; 3) into a stop position by way of the drive cable, characterised - in that a first cable portion of the drive cable is coupled to the first sliding block, is guided via an upper first cable deflector, arranged in the upper end region of the first guide rail, to the cable drum and from there via a lower second cable deflector, arranged in a lower end region of the second guide rail, to the second sliding block, and is coupled to the second sliding block, - in that a second cable portion of the drive cable is coupled to the second sliding block, is guided via an upper second cable deflector, arranged in the upper end region of the second guide rail, and via a lower first cable deflector, arranged in the lower end region of the first guide rail, to the first sliding block, and is coupled to the first sliding block, - in that, in the stop position, the second sliding block is positioned against the second stop and the first sliding block is arranged at a predetermined distance from the first stop, and - in that the predetermined distance is in a range between 0.4 percent and 1.2 percent of a length of the Bowden outer tube. - in that a first cable portion of the drive cable is coupled to the first sliding block, is guided via an upper first cable deflector, arranged in the upper end region of the first guide rail, to the cable drum and from there via a lower second cable deflector, arranged in a lower end region of the second guide rail, to the second sliding block, and is coupled to the second sliding block, - in that a second cable portion of the drive cable is coupled to the second sliding block, is guided via an upper second cable deflector, arranged in the upper end region of the second guide rail, and via a lower first cable deflector, arranged in the lower end region of the first guide rail, to the first sliding block, and is coupled to the first sliding block, - in that, in the stop position, the second sliding block is positioned against the second stop and the first sliding block is arranged at a predetermined distance from the first stop, and - in that the predetermined distance is in a range between 0.4 percent and 1.2 percent of a length of the Bowden outer tube.