An apparatus for switching on and off a service for informing a user of a vehicle state through a communication terminal, a system including the same, and a method thereof are disclosed. The apparatus, system, and method can acquire a location of a vehicle, to which a notification service on a state of the vehicle is provided through a communication terminal of a user, and control on/off of the notification service, based on at least one of information on the location of the vehicle, an area, in which the notification service is unnecessary, or information on driving patterns of the user. Usability may be improved by classifying an area, in which a notification is unnecessary, according to attributes of notification information on the state of the vehicle to prevent generation of an unnecessary notification in advance.