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Old 07-30-2012, 12:40 AM   #4 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Indiana
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Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
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With electronic spark advance it could happen, id try a few different runs at those speeds and see. I get the same mpg at 55 as I do at 60, but 65 drops from 40 to 38-39. 70 is about 36mpg.
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