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There's a distance calibration (which you've done), and a fuel usage calibration. You should fill your tank, zero the distance, and do the fuel calibration on the next tank fill. Other factors affecting SG mpg estimates are engine displacement, gas tank size, and cutoff. Make sure they're set up, and you've set your fuel type to hybrid if you EOC. Both SG and UG give overly optimistic fuel usage estimates until they're fully calibrated.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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