I don't trust the onboard computer. I've been recording the reported lifetime avg, trip avg (reset between fill ups), and calculating actual consumption every time I fill up and the computer is always 1-2 mpg higher. My lifetime avg is 24.8 mpg calculated vs 26.9 mpg per the onboard computer.
I have a Badlands, drive almost exclusively in Eco, don't have a lead foot, don't have a whole lot of hills to climb, and do a lot more city driving than highway. I've seen over 30 mpg once from a full tank of interstate driving. My predominantly highway tanks are typically 25-27 mpg and my predominantly city tanks are 22-24 mpg, both hand calculated.
I have a Badlands, drive almost exclusively in Eco, don't have a lead foot, don't have a whole lot of hills to climb, and do a lot more city driving than highway. I've seen over 30 mpg once from a full tank of interstate driving. My predominantly highway tanks are typically 25-27 mpg and my predominantly city tanks are 22-24 mpg, both hand calculated.
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) on a long cross-country over the mountains. The best fuel mileage I achieved during the trip was across Wyoming on I-80. The average altitude for that stretch of road is above 6,000 ft, and the speed limit is 80 mph. With the cruise control set at 90 mph the RPM was right at 2500, which is very close to peak torque for the 2.3L EcoBoost engine. I saw nearly 34 mph for that leg of the trip, which I found to be remarkable in every way for an engine capable of producing 310 HP.