VEHICLE STRUCTURE

A vehicle structure includes a sliding door operation device configured to move a sliding door on a side portion of a vehicle. The device includes a motor unit and a moving member operating mechanism portion including a belt or a wire-shaped moving member coupled to the sliding door and a driven rotary member that receives a rotational driving force from the motor unit. The motor unit and the driven rotary member are provided with a serration shaft portion and a serration hole that are fitted to each other. The vehicle structure further includes a rotation operation unit configured to rotate the motor unit about centers of the serration shaft portion and the serration hole when the motor unit is pushed toward the driven rotary member to fit the serration shaft portion and the serration hole to each other.