An instrument system for a vehicle in which information regarding the operation of the vehicle is displayed on the display of a portable communication device. Information regarding the operation of the vehicle may be sensed by at least one sensor. The sensed information may be communicated to a vehicle controller and/or transmitted to the portable communication device. The sensed information may be used by the vehicle controller and/or the portable communication device to derive information regarding the performance or operation of the vehicle and displayed on the display. The portable communication device may also retrieve or derive other information relating to the operation of the vehicle, such as information obtained from a remote server, and display the additional information for the user of the vehicle. The vehicle may be configured to receive the secure placement of the portable communication device in the vehicle, such as on a dashboard.