A method and an apparatus for controlling Internet-of-Things (IoT) devices interlocked with a vehicle are disclosed may include confirming first classification information related to a plurality of IoT devices, confirming second classification information related to at least one service to be provided using the plurality of IoT devices, determining reliability of the plurality of IoT devices corresponding to the first classification information and the second classification information, in the case in which data of the same item are transmitted redundantly from the plurality of IoT devices, selecting a value transmitted from an IoT device selected corresponding to the reliability, and transmitting the selected value to a device that performs the at least one service.