A method of controlling a vehicle using a dial knob includes steps of generating a first numerical value obtained by numeralizing a degree of rotation of the dial knob in a first direction and storing operation data reflecting the first numerical value, controlling the vehicle using control data, if the stored operation data corresponds to the control data, generating a second numerical value obtained by numeralizing a degree of rotation of the dial knob in a second direction opposite to the first direction and storing operation data reflecting the second numerical value, if the operation data does not correspond to the control data, and controlling the vehicle using the control data if the stored operation data corresponds to the control data, and returning to the step of generating the first numerical value if the operation data does not correspond to the control data.