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Old 02-07-2012, 02:27 PM   #2 (permalink)
JRMichler
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Join Date: Feb 2011
Location: Phillips, WI
Posts: 1,017

Nameless - '06 GMC Canyon
90 day: 37.45 mpg (US)

22 Maverick - '22 Ford Maverick XL
90 day: 48.08 mpg (US)
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OK, now let's calculate what MPG I should get at a steady 55 MPH.

55 MPH = 80.7 Ft/Sec.
Drag = 0.0143 X 80.7^2 + 54 = 147 lbs.
Hp = 147 Lbs X 80.7 Ft/Sec / 550 Ft-Lbs/Hp = 21.6 Hp.
Estimated fuel consumption = 21.6 X 0.5 Lbs / Hp-Hr / 6 Lbs/Gallon = 1.8 GPH.
Estimated MPG = 55 MPH / 1.8 GPH = 30.6 MPG.

This is almost exactly what I would expect on a 17 degree day with zero wind at 55 MPH. Now, I had a good turbodiesel at 0.35 lbs / Hp-Hr, I would expect 43.7 MPG under the same conditions. DROOL.
__________________
06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.

22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
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