Provided is a vehicle including: an image acquisition unit; a cap provided on a body of the vehicle and configured to open and close a replenishing port for replenishing an energy source; a driving unit allowing the cap to be separated or connected from/to the body; and a controller configured to determine an intention of a user to replenish the energy source on the basis of an image acquired by the image acquisition unit, and control the driving unit such that the cap is automatically separated from the body in response to determining that the intention of the user to replenish the energy source exists.