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Old 09-21-2011, 05:18 PM   #14 (permalink)
roosterk0031
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Quote:
Originally Posted by brandonppr View Post
Acording to EPA its rated
E85
15 city
18 combined
23 Hwy

Gasoline
22 city
26 combined
33 Hwy

Thats about 44.5% better on Gasoline
Why is there so much differnce?
Actually the EPA E85 ratings are roughly 1/3 lower than E0 ratings. 1/3 or 22 is 7, so 22-7 is 15, 1/3 off 33 is 11 so 33-11 is 22(1 off). I don't think they test E85, they use the 32.8% or so energy difference and round it off.

OOPS: 32.8% is by weight, energy difference per volumne is 28%. Also looking at fueleconomy gov most FFV are reduced by closer to 25% except the Malibu & HHR which are 2 of the few 4 cylinder FFV produced are dinged at around 30%.

Last edited by roosterk0031; 09-22-2011 at 05:06 PM..
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