The invention relates to an assembly (100) for a vehicle, comprising two longitudinal members (1, 2) and a crossmember (3) arranged therebetween, which crossmember extends approximately perpendicularly to the longitudinal members (1, 2), wherein the crossmember (3) is an elastically twistable torsion member, and the crossmember (3) is made predominantly of fibre composite material and the longitudinal members (1, 2) are made predominantly of a metal material, and the crossmember (3) is connected to the longitudinal members (1, 2), wherein the crossmember (3) is clamped or supported on one of the two longitudinal members (1, 2), at a connection point (6) of the crossmember to the longitudinal members (1, 2), by means of respective ends (7) of the crossmember, and torsional forces are transmitted to the crossmember (3) at said connection point (6). In order to improve the assembly to the effect that the crossmember can be easily connected to the longitudinal member and the forces and torques occurring at the connection point nevertheless can be transmitted to the crossmember well at the connection point and the connection point has high stability at the same time, the connection point (6) between the crossmember (3) and the longitudinal member (1, 2) comprises an overlapping region (B), in which a connection segment (8) of the longitudinal member (1, 2), which is predominantly composed of metal material, overlaps at least in some segments with a part of the crossmember (3), which is predominantly composed of fibre composite material.