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Old 03-03-2012, 09:59 PM   #2
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Join Date: Jul 2011
Location: Tucson, AZ
Posts: 431

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).
2014 Toyota Prius 1.8L (2ZR-FXE) eCVT <--new!
2009 Pontiac Vibe 1.8L (2ZR-FE) 4A
2004 Pontiac Vibe 1.8L (1ZZ-FE) 4A

1971 Dodge Charger 318 3A
1970˝ Plymouth AAR 'Cuda 340/6BBL 4M
1968 Dodge Charger 383 3A
1967 Plymouth Barracuda Formula·S 383 4M
1965 Plymouth Barracuda Formula·S 273 4M
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