The AVG MPH Button
The BMW On-Board Computer IIThe AVG MPH Button
The AVG MPH button calls up the average speed on the display panel. It is not a programmable function, although speed averaging calculations can be re-started at any time.
To compute the average speed on any given trip, first press the AVG MPH button once, then the SET-RES button. The computer will begin averaging speed from that point.
For a display of average speed, simply press the AVG MPH button. The display will show the average miles per hour since re-setting the computer.