A vehicle diagnostic tool configured to interface with a removable memory device. The removable memory device is configured to store information about the vehicle such as, for example, the maintenance history of the vehicle and notes or special instructions from one or more mechanics having performed the maintenance. The memory device, once disengaged from the diagnostic tool, is given to the vehicle's owner for safekeeping and may be incorporated in a key, fob or other device that the owner would often have available when operating the vehicle. Also, a method of collecting and storing vehicle data is also provided.