Motor vehicle comprising an arrangement comprising: - a retractable luggage cover designed to cover a rear luggage compartment of the motor vehicle, at least in part, and - a system for mounting the luggage cover, the system comprising first attachment elements integral with the luggage cover and second attachment elements integral with the vehicle, the first and second elements interacting with one another such as to ensure that the luggage cover is held, relative to the vehicle, at a distance from a luggage compartment floor, the mounting system being configured such as to automatically end interaction between the first and second attachment elements in order to release the luggage cover in the event of the application to the luggage cover of a force in excess of a predetermined threshold value chosen such as to guarantee that the application to the luggage cover of any force in a direction oriented, during functioning, in the vertical direction associated with the vehicle, directed downwards and below said threshold value does not damage the luggage cover, the vehicle being characterized in that the first attachment elements comprise at least one attachment tab made from an elastically deformable material engaged in a corresponding receiving housing belonging to the second attachment elements, the modulus of elasticity of the constituent material of said attachment tab being configured such that the application to the luggage cover of a force in excess of or equal to said threshold value gives rise to an elastic deformation of said attachment tab, ensuring disengagement of the attachment tab outside of the receiving housing. - a retractable luggage cover designed to cover a rear luggage compartment of the motor vehicle, at least in part, and - a system for mounting the luggage cover, the system comprising first attachment elements integral with the luggage cover and second attachment elements integral with the vehicle, the first and second elements interacting with one another such as to ensure that the luggage cover is held, relative to the vehicle, at a distance from a luggage compartment floor, the mounting system being configured such as to automatically end interaction between the first and second attachment elements in order to release the luggage cover in the event of the application to the luggage cover of a force in excess of a predetermined threshold value chosen such as to guarantee that the application to the luggage cover of any force in a direction oriented, during functioning, in the vertical direction associated with the vehicle, directed downwards and below said threshold value does not damage the luggage cover, the vehicle being characterized in that the first attachment elements comprise at least one attachment tab made from an elastically deformable material engaged in a corresponding receiving housing belonging to the second attachment elements, the modulus of elasticity of the constituent material of said attachment tab being configured such that the application to the luggage cover of a force in excess of or equal to said threshold value gives rise to an elastic deformation of said attachment tab, ensuring disengagement of the attachment tab outside of the receiving housing.