Today I went for a 300 mile road trip, 1/2 on a posted 70 mph interstate and the other 1/2 on a 55 mph county high way. I set the Bronco in ECO mode and used the cruise control set at both posted speed limits. I'm in Iowa so both roads were pretty much flat. I used the trip tracker 1 for the 70 mph travel and trip tracker 2 for the 55 mph travel. The 70 mph cruise control jaunt tracked the miles per gallon at 16.6 and the 55 mph cruise control jaunt tracked the miles per gallon at 20.5 Both in Eco Mode. I have a 4 door base sasquatch'd automatic with the 2.7 engine.