Body structure of a motor vehicle

The invention relates to a body structure (1) of a motor vehicle, especially a passenger car, with a sub-floor (2), a side sill (3, 4), a center tunnel (5) and a reinforcing structure (6) of metal between the sill (3 or 4) and the center tunnel (5). In such a body structure of the invention provides that the reinforcing structure (6) having a V-shaped strut (8), which is formed of aluminum extruded profiles, wherein the V-shaped strut (8) with its end (9) in the direction a, relative to the forward direction of travel of the motor vehicle, the front end (10) of the body structure (1) is arranged. Such a body structure has a specially trained reinforcement structure is designed very stiff particular aspect crash. This reinforcement structure has a low weight and is easy to manufacture.