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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