A windscreen assembly (10) for a vehicle 1 is described, comprising:—a windscreen panel group (11, 12) comprising a windscreen panel (11) and a support structure (12) to support the windscreen panel (11); and—a wiper group (20. The wiper group (20) comprises a wiper (13), a drive motor group (14) for actuating the wiper (13), a tank (15) for a liquid and a pump (16) operationally connected to the tank (15). The wiper group (20) is supported by the windscreen panel group (11, 12) and said windscreen assembly (10) is configured to be removably coupled to said vehicle.