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Old 08-17-2014, 09:57 AM   #4 (permalink)
Master EcoModder
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Join Date: Nov 2010
Location: US
Posts: 958

Chief - '06 Pontiac Grand Prix
90 day: 23.13 mpg (US)

SF1 - '12 Ford Fiesta S
90 day: 21.28 mpg (US)
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MPG is a measurement of fuel usage compared to distance. When you begin accelerating you are covering less distance over a given amount of time. As the speed of the car increase it covers more distance on a given amount of fuel up to a point.

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