Abstract: A sliding motor vehicle roof with two rigid covers (10, 11) for closing and at least partially exposing a roof opening (12) which is bordered by the roof frame in the fixed roof surface (13), with an displacement means for the ventilation position of the two covers (10, 11), and with a head liner which has a front and a rear headliner part (14, 15) and which can be moved at least partially independently of the cover position in the direction of the lengthwise axis of the motor vehicle by the displacement means. It is provided that, in order to produce the front horizontal ventilation gap (16) in front of the front edge of the front headliner part (14) and the rear horizontal ventilation gap (17) between the two headliner parts (14, 15), the front headliner part (14) is coupled to the rear headliner part (15).