I just bought a 1500 Sierra Duramax and love it. Camper weighs 7500 lbs loaded. After hand calculated for our trip south I averaged 12.3 mpg and that’s with driving in 4wd for 500 miles.
The third pic is with bikes and gear in the bed and speeds of 75-90 mph. Hand calculations put me at 25.1 mpg
Day to day I get 28-30 mpg. I’ve owned everything under the sun and nothing compares mileage wise.
The guy that says he getting 18-20 mpg with his ecoboost isn’t resetting his dash when towing. Towing a loaded 6x12 with the ecoboost gets 8-12 mpg not matter how fast you drive. I’ve had 4 ecoboosts f150s and they all averaged the same.
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