A vehicle system includes a plurality of applications issuing a request for a communication with an outside of a vehicle, a communicator device performing the communicating, and a network coordinator managing the request for the communication from the plurality of applications. In a communication method in the vehicle system, when the network coordinator receives a request for a connection with an outside of the vehicle from the application, the network coordinator determines whether or not to permit the connection with the outside of the vehicle, and the network coordinator notifies the application of a determination result of the connection with the outside of the vehicle.