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Old 03-03-2012, 08:59 PM   #2
70AARCUDA
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Join Date: Jul 2011
Location: Tucson, AZ
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I think you'll find the DIC "mpg" values are typically too optimistic -- higher than calculated using pump & odometer numbers -- by about 5-10%, at least that's what I've found with our 2011 Cruze LTZ. Maybe the 2012's have better algorithm(s)?

Our SGII numbers are much more accutate, usually within +/- 0.1 mpg, once "calibrated" for both engine and gasoline (varies slightly with alcohol content).
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