An electronic system for the detection and reporting of an unauthorized removal of a registration license plate (TP, TA) from a motor vehicle, the system comprising: - an electronic transceiver device attached to a portion of the bodywork of the motor vehicle and connected to a supply voltage of the motor vehicle; - at least one transponder (2, 3) attached to one of the license plates (TP, TA) of the motor vehicle; said electronic transceiver device and said at least one transponder (2, 3) being configured to communicate with each other through a wireless communication channel, said electronic transceiver device being configured to periodically transmit a query signal within a respective query region, and to receive: a first response signal from said at least one transponder (2, 3) when at least one transponder is within said query region, a second response signal when the at least one transponder (2, 3) is brought outside said query region; - an electronic unit for system management separate from said electronic transceiver device and from said at least one transponder (2, 3); characterized in that the system further comprises: - sequential and chronological recording means of: a first alarm event, in which the at least one transponder (2, 3) is brought outside the query region, a second alarm event, in which said supply voltage source of the motor vehicle is disconnected from the electronic transceiver device, a third alarm event arising from a tampering of an enclosure adapted to contain the registration license plate (TP, TA) of the motor vehicle; - wireless signaling means (ALM1, ALM2) configured to signal to the electronic management unit the occurrence of at least one of said first, second and third alarm events, wherein said sequential and chronological recording means are associated with said at least one transponder (2, 3) and are a recording log, and said recording log comprises, for each alarm event: - a first recording record where said alarm event information is recorded in unencrypted form; - a second recording record where said alarm event information is recorded in encrypted form. - an electronic transceiver device attached to a portion of the bodywork of the motor vehicle and connected to a supply voltage of the motor vehicle; - at least one transponder (2, 3) attached to one of the license plates (TP, TA) of the motor vehicle; said electronic transceiver device and said at least one transponder (2, 3) being configured to communicate with each other through a wireless communication channel, said electronic transceiver device being configured to periodically transmit a query signal within a respective query region, and to receive: a first response signal from said at least one transponder (2, 3) when at least one transponder is within said query region, a second response signal when the at least one transponder (2, 3) is brought outside said query region; a first response signal from said at least one transponder (2, 3) when at least one transponder is within said query region, a second response signal when the at least one transponder (2, 3) is brought outside said query region; - an electronic unit for system management separate from said electronic transceiver device and from said at least one transponder (2, 3); - sequential and chronological recording means of: a first alarm event, in which the at least one transponder (2, 3) is brought outside the query region, a second alarm event, in which said supply voltage source of the motor vehicle is disconnected from the electronic transceiver device, a third alarm event arising from a tampering of an enclosure adapted to contain the registration license plate (TP, TA) of the motor vehicle; a first alarm event, in which the at least one transponder (2, 3) is brought outside the query region, a second alarm event, in which said supply voltage source of the motor vehicle is disconnected from the electronic transceiver device, a third alarm event arising from a tampering of an enclosure adapted to contain the registration license plate (TP, TA) of the motor vehicle; - wireless signaling means (ALM1, ALM2) configured to signal to the electronic management unit the occurrence of at least one of said first, second and third alarm events, wherein said sequential and chronological recording means are associated with said at least one transponder (2, 3) and are a recording log, and said recording log comprises, for each alarm event: - a first recording record where said alarm event information is recorded in unencrypted form; - a second recording record where said alarm event information is recorded in encrypted form. wherein said sequential and chronological recording means are associated with said at least one transponder (2, 3) and are a recording log, and said recording log comprises, for each alarm event: - a first recording record where said alarm event information is recorded in unencrypted form; - a second recording record where said alarm event information is recorded in encrypted form. - a first recording record where said alarm event information is recorded in unencrypted form; - a second recording record where said alarm event information is recorded in encrypted form.