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Old 03-30-2014, 09:28 PM   #3 (permalink)
Master EcoModder
JRMichler's Avatar
Join Date: Feb 2011
Location: Phillips, WI
Posts: 1,006

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

22 Maverick - '22 Ford Maverick XL
90 day: 37.93 mpg (US)
Thanks: 188
Thanked 457 Times in 280 Posts
Nice job of testing. Looks like the effects of warmer outside temperature and/or oil temperatures warming up are greater than the effect of aero hubcaps.

Some good follow up tests would be the effect of outside temperature and the effect of driving time (warming of engine oil, tranny oil, and differential oil) on mileage.
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.
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