The indicated gas mileage varies too widely among posters with similar cars, fuel type and driving habits to be mathematically accurate. Why? Consider the following.
•The DIC has a menu option for 'Units'. 1 is Imperial units, 2 is US units, and 3 is metric units. Those that have it set to #1 in units are getting their mpg readings for imperial units rather than US units. An imperial gallon is bigger than a US gallon, thus it will read a higher mpg than your actual miles per US gallon. To see the difference, look at your average mpg and now switch between 'unit 1' and 'unit 2' and you wi