A vehicle lower structure including: a drive source having an internal combustion engine and an electric drive motor; a floor panel forming a floor surface of a cabin; and a propeller shaft extending in a vehicle longitudinal direction at a position under the floor panel to transmit power from the drive source to at least one drive wheel, the vehicle lower structure comprising: a battery pack having a first battery unit, a second battery unit, and a battery cover, at positions under the floor panel, the first battery unit and the second battery unit being arranged separately from each other on both sides in a vehicle width direction of the propeller shaft and storing electricity to be supplied to the electric drive motor; wherein the battery cover has: a first battery accommodation section accommodating the first battery unit; a second battery accommodation section accommodating the second battery unit; and a coupling section that couples the first battery accommodation section and the second battery accommodation section, and the coupling section couples the first battery accommodation section and the second battery accommodation section such that it extends in the vehicle width direction at a position above the propeller shaft, characterized in that the vehicle lower structure further comprises a fuel tank arranged at a position under the floor panel and on a vehicle rear side of the first battery unit and the second battery unit in a manner to be higher than the first battery unit and the second battery unit, and a tank attachment member to which a fixture belt for fixing the fuel tank is attached, wherein the coupling section is arranged next to a vehicle front side of the fuel tank and includes a concave section on an upper side of the coupling section, the concave section being dented substantially downward, and the tank attachment member is arranged at least partly in the concave section. a battery pack having a first battery unit, a second battery unit, and a battery cover, at positions under the floor panel, the first battery unit and the second battery unit being arranged separately from each other on both sides in a vehicle width direction of the propeller shaft and storing electricity to be supplied to the electric drive motor; wherein the battery cover has: a first battery accommodation section accommodating the first battery unit; a second battery accommodation section accommodating the second battery unit; and a coupling section that couples the first battery accommodation section and the second battery accommodation section, and a first battery accommodation section accommodating the first battery unit; a second battery accommodation section accommodating the second battery unit; and a coupling section that couples the first battery accommodation section and the second battery accommodation section, and the coupling section couples the first battery accommodation section and the second battery accommodation section such that it extends in the vehicle width direction at a position above the propeller shaft, characterized in that the vehicle lower structure further comprises a fuel tank arranged at a position under the floor panel and on a vehicle rear side of the first battery unit and the second battery unit in a manner to be higher than the first battery unit and the second battery unit, and a tank attachment member to which a fixture belt for fixing the fuel tank is attached, wherein the coupling section is arranged next to a vehicle front side of the fuel tank and includes a concave section on an upper side of the coupling section, the concave section being dented substantially downward, and the tank attachment member is arranged at least partly in the concave section.