Quote:
Originally Posted by TouchMyHonda
Economy is a huge factor with the tuner. I get great gas mileage with my Honda that runs 100 percent E85. E85 is also a full dollar or more cheaper than 93 in Chicago. Not quite sure where the expensive thought is coming from.
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e85 has a low energy density. It takes more e85 to go the same distance as a car running regular gasoline. E85 typically sees a 25%-30% drop in fuel economy, so with a 6sp manual FR-S being 22city/30highway we can assume that with e85 you will be around 15.5city/21highway.
Presently average prices in Washington are:
92: $3.83
e85: $3.13
So armed with those figures lets take a metaphorical trip. Lets go 1000 miles.
FRS' gas tank is 13.2 gallons max. We'll assume for the sake of argument that we are able to achieve no more than max highway MPG as stated above.
396 miles a tank on 92 octane
277.2 miles a tank on e85.
In order for you to complete the 1000 miles you would need to fill up (assuming you're running nearly dry and then filling up):
3 times on 92 (1188 potential on 3 tanks)
4 times on e85 (1108.8 potential on 4 tanks - ~80 miles LESS)
So to make that trip you're going to spend:
$151.67 for 92 octane
$165.26 for e85
e85 stations in my area, and circled where I actually drive. Closest station to my house is 50 miles. Sounds like a really attractive way to tune
