Date Miles gallons MPG MPG-CAR
6/3/2010 384.0 14.057 27.50
6/13/2010 384.8 14.501 27.37 28.20
6/23/2010 383.4 15.100 26.44 27.50
7/3/2010 430.0 14.850 28.48 28.60
7/12/2010 396.5 15.327 26.70 27.90
7/21/2010 401.1 14.151 26.17 27.50
7/31/2010 403.0 15.011 28.48 28.20
Average 2,398.8 87.986 27.26 27.98

This is my list of mpg. How I calculated was.... 6/23's miles were divided by 6/13's gallons. Where as the "MPG-CAR" was what the Rouge told me was real-time MPG. You can see that the average calculated MPG compared to the Rouge's MPG's are about the same. Pretty good....
I live in North-Western Mass and South-Western New Hampshire. I normally drive 15 miles to work up and down hills and around twisty corners. 10 miles is at 40-60 MPH and the last 5 is 'town' driving with about 4 traffic lights. I occasionally will travel about 25 miles up to NH with some interstate driving at 72 MPH then the rest nice highway at 40-50.

Ah, and I have a brand new 2010 Rouge SL AWD. This is the list from my first fill up!!!