A system and method for demand-activated remote monitoring and/or control of motor vehicles via a radio data communication link with a coordination unit. The coordination unit is configured for conveying requests for remote monitoring and/or remote control of a motor vehicle and offers for performing the remote control from control terminals located remotely from the coordination unit. After acceptance of an offer by the vehicle, the coordination unit provides a data communication link between the motor vehicle and the control terminal over which the remote control and/or monitoring is performed.