A method comprising: connecting a first vehicle service tool to a data link connector of a first vehicle, wherein the first vehicle generates vehicle service data; at the first vehicle service tool, receiving (i) a vehicle identifier associated with the first vehicle, and (ii) vehicle service data transmitted from the first vehicle via a vehicle interface cable that connects the first vehicle service tool to the data link connector of the first vehicle, wherein the received vehicle service data is arranged according to a vehicle manufacturer's format; categorizing, at the first vehicle service tool, the vehicle service data received from the first vehicle, wherein categorising the received vehicle service data comprises a computer-readable processor at the first vehicle service tool interpreting the received vehicle service data to determine which data of the received vehicle service data, arranged according to the vehicle manufacturer's format, is to be populated into a category of a transfer file to be generated via the first vehicle service tool and transmitted from the first vehicle service tool to a remote device; generating, via the first vehicle service tool, a transfer file including the vehicle identifier and one or more categories of vehicle service data, wherein generating the transfer file comprises populating the category of the transfer file with the categorized vehicle service data from the received vehicle data that is to be populated into the category of the transfer file, and wherein a format of the transfer file differs from the vehicle manufacturer's format; and the first vehicle service tool transmitting the transfer file to a network for transmission, in turn, to the remote device. connecting a first vehicle service tool to a data link connector of a first vehicle, wherein the first vehicle generates vehicle service data; at the first vehicle service tool, receiving (i) a vehicle identifier associated with the first vehicle, and (ii) vehicle service data transmitted from the first vehicle via a vehicle interface cable that connects the first vehicle service tool to the data link connector of the first vehicle, wherein the received vehicle service data is arranged according to a vehicle manufacturer's format; categorizing, at the first vehicle service tool, the vehicle service data received from the first vehicle, wherein categorising the received vehicle service data comprises a computer-readable processor at the first vehicle service tool interpreting the received vehicle service data to determine which data of the received vehicle service data, arranged according to the vehicle manufacturer's format, is to be populated into a category of a transfer file to be generated via the first vehicle service tool and transmitted from the first vehicle service tool to a remote device; generating, via the first vehicle service tool, a transfer file including the vehicle identifier and one or more categories of vehicle service data, wherein generating the transfer file comprises populating the category of the transfer file with the categorized vehicle service data from the received vehicle data that is to be populated into the category of the transfer file, and wherein a format of the transfer file differs from the vehicle manufacturer's format; and the first vehicle service tool transmitting the transfer file to a network for transmission, in turn, to the remote device.