Well, the summer gas mileage season is over. I drove 3414.0 miles and burned 89.42 gallons, for total summer MPG of 38.2. That compares to the summer 2013 average of 36.0 MPG, and the summer 2012 average of 37.1 MPG.
Summer 2012 had warmer weather with more tailwinds, and summer 2013 had worse weather than summer 2014. I believe that the better feedback of the vacuum gauge, compared to the time delayed feedback of the ScanGauge, is worth at least 1.0 MPG and possibly slightly more.
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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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