A method and apparatus 10 for interacting remotely with a vehicle 12 comprising data transfer means 22 for wirelessly communicating messages between a mobile communications device 18 operable by a user and a vehicle databus 24 located within the vehicle 12. Optionally, the data transfer means 22 is arranged to wirelessly communicate with the mobile communications device 18 via a web server 14, a web portal or other internet-connected host system. The data transfer means 22 may be arranged to wirelessly communicate with the web portal via a GSM or other cellular communications network 13. After the vehicle engine has stopped, communication of messages may continue on an intermittent basis, or may be suspended after a predetermined time has elapsed or when the vehicle battery voltage reaches a predetermined threshold. High priority messages may be communicated at any time after the vehicle engine has stopped.