Rear vehicle assembly comprising: - a body structure, wherein the body structure delimits an opening comprising at least a first lateral edge of the opening and a second lateral edge of the opening, - a tailgate, wherein the tailgate is movable relative to the body structure between at least one open position, where the opening of the body structure is accessible, and a closed position, where the tailgate closes the opening of the body structure, and wherein the tailgate comprises at least one first tailgate lateral edge and a second tailgate lateral edge, - an opening and closing device, wherein the opening and closing device comprises at least one first connecting rod and one second connecting rod fixing the tailgate to the body structure, wherein the first connecting rod and the second connecting rod are each hinged at a first end (31; 38) to the body structure and at a second end (37; 40) to the first tailgate lateral edge, characterized in that the first connecting rod comprises a first substantially rectilinear section from its first end to a first intermediate point, a substantially curved section from the first intermediate point to a second intermediate point, and a second substantially rectilinear section from the second intermediate point to the second end, wherein the first substantially rectilinear section is located on the concave side of the substantially curved section while the second substantially rectilinear section is located on the convex side of the substantially curved section, and in that the second ends (37; 40) of the first connecting rod and the second connecting rod slide on a rail fixed on the tailgate that is substantially parallel to the first tailgate edge, wherein the rail is substantially parallel to the plane of the opening in the closed position of the tailgate. - a body structure, wherein the body structure delimits an opening comprising at least a first lateral edge of the opening and a second lateral edge of the opening, - a tailgate, wherein the tailgate is movable relative to the body structure between at least one open position, where the opening of the body structure is accessible, and a closed position, where the tailgate closes the opening of the body structure, and wherein the tailgate comprises at least one first tailgate lateral edge and a second tailgate lateral edge, - an opening and closing device, wherein the opening and closing device comprises at least one first connecting rod and one second connecting rod fixing the tailgate to the body structure, wherein the first connecting rod and the second connecting rod are each hinged at a first end (31; 38) to the body structure and at a second end (37; 40) to the first tailgate lateral edge, characterized in that the first connecting rod comprises a first substantially rectilinear section from its first end to a first intermediate point, a substantially curved section from the first intermediate point to a second intermediate point, and a second substantially rectilinear section from the second intermediate point to the second end, wherein the first substantially rectilinear section is located on the concave side of the substantially curved section while the second substantially rectilinear section is located on the convex side of the substantially curved section, and in that the second ends (37; 40) of the first connecting rod and the second connecting rod slide on a rail fixed on the tailgate that is substantially parallel to the first tailgate edge, wherein the rail is substantially parallel to the plane of the opening in the closed position of the tailgate.