LOWER PART VEHICLE BODY STRUCTURE OF VEHICLE

PROBLEM TO BE SOLVED: To provide a lower part vehicle body structure of a vehicle for reconciling extension of the capacity of a fuel tank and improvement of aerodynamic performance around the fuel tank by forming a kick-up part step-raised to an upper side in a floor panel, disposing the fuel tank on a lower side of the kick-up part, extending a lower surface part of the tank to be lower than the height of a lowermost surface of the floor panel, and providing an air deflector for straightening travel wind to the tank in the floor panel in front of the fuel tank. SOLUTION: This structure is provided with the floor panel 2 and a pair of left and right rear frames extending in the longitudinal direction of the vehicle by holding a prescribed space in a vehicle width direction on a rear side of the floor panel 2. The fuel tank 13 is disposed between the pair of rear frames. In the floor panel 2, the kick-up part 5 step-raised to the upper side is formed. The fuel tank 13 is disposed on the lower side of the kick-up part 5. The lower surface part of the fuel tank 13 is extended to be lower than the height of the lowermost surface of the floor panel 2. The air deflector 14 for straightening travel wind x to the fuel tank 13 is provided in front of the fuel tank 13 in the floor panel 2. COPYRIGHT: (C)2006,JPO&NCIPI