My trip to town 27 miles is non stop with a few up and down grades I usually have ECO and Cruise control on with no air running my screen MPG from Start usually finishes up on 62/63 MPG. To day I drove in with no Cruise or ECO on and both front windows open kept my average speed at 52-55mph usually I have cruise on at 55mph when I stopped my screen was showing 74 MPG I know the monitor is slightly high compared to actual gallons replaced but this seems a remarkable difference any views or comments.
I believe your not using the cruise made some of the difference in MPG. Try doing it more days and see what results you get.
I tried same thing today no noticeable wind and 68mpg showing we have real hot weather at present would that make a difference I used to think that cold air was best for car performance.
