A fuel tank includes: a fuel tank body for accommodating fuel of an engine； and at least one elastic member disposed on a bottom surface of the fuel tank body. The at least one elastic member includes at least one protruding portion protruding downward and having a contact surface to be in contact with ground, the at least one elastic member having an asymmetric shape in at least one of an axial direction of a crank shaft of the engine or a horizontal direction intersecting with the front-rear direction. The fuel tank may include two elastic members having different elastic moduli from each other.
