This invention is intended to ensure that a vehicle control method or vehicle control device is capable of achieving the object of each of a plurality of control logics in a balanced manner and performing an appropriate control for the vehicle as a whole. Demands concerning a plurality of control parameters of a vehicle are output from each of a plurality of control logics having an object individually. The target value of each of the control parameters is determined by mediating the demands from each of the control logics with respect to each kind of control parameter. In doing so, the demand from the control logic whose demand has been reflected to the target value in the already-performed mediation is withdrawn or relieved in the following mediation.