I test drove a 2010 Prius Base today. Very nice, except MPG information was not featured in the Info menu. There was a bar graph next to the spedometer showing me current mpg, but there was no way that I could find to see the average mpg. Do the 2010's really not have that feature? Could the dealer program in in? Thanks..
It's there Each momentary push of the trip button (on right side of steering wheel) changes the display along the bottom. Be careful, a more sustained push will reset the current Trip. Both Trip A and Trip B will display accumulating mpg since last reset, along with with distance, and average speed. The mpg is a bit exaggerated, about 7% optimistic, but at least semi-predictable. An example, with Trip A showing: