Quote:
Originally Posted by Cobb
Shouldnt the mpg be higher? I mean mpge. If you are filling up winter blend e85 which is e70, 10 gallons from empty. Thats 7 gallons ethanol and 3 gasoline. So lets say my insight gives 40mpg on the mid or 400 miles after burning this tank. Shouldnt my fuel economy really be expressed as 133 MPGe? 
BTW, I added 4.5 gallons of e85 to my insight, bumped the mpg 5mpg on my leg home. This was in sport mode cycling through the ratios as a switches lanes, passed yellow lights and kept pace with traffic.  |
No, do not calculate MPGe for Ethanol blends by ignoring the Ethanol content. Ethanol contains 66% of the energy content of Gasoline per gallon. So to get the MPGe you divide the Ethanol % by 66%(multiply by 1.5) then add in the Gasoline %. That will give you a correction factor to multiply your MPG to get MPGe. Check the wiki for MPGe if you're confused about this.