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Author Topic: Has anyone noticed a dffierence in fuel economy when using ethanol Back to Topics
CORNHICK

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Omaha

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Message Posted: May 1, 2012 8:38:24 AM

I am concered about percentages if you have lost fuel economy with using 10% ethanol and what kind of car. And whatever else tips you might have to tell me!
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Jmac2008
Champion Author Missouri

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Message Posted: Sep 12, 2014 12:18:48 AM

Yes, My 2012 Impala goes from 31.5 MPG Highway without Ethanol in the Gasoline down to 29.4 MPG highway with 10% Ethanol in the Gasoline. This is about a 7% drop in mileage with 10% Ethanol in the gas.
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CORNHICK
All-Star Author Omaha

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Message Posted: Sep 2, 2014 9:38:08 PM

and Yes I started running premium because all the other grades have ethanol in them now besides premium. But be careful cause some stations still have ethanol in their premium
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CORNHICK
All-Star Author Omaha

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Message Posted: Sep 2, 2014 9:37:16 PM

yeah ethanol is a alternative to gas and it is not 100% but neither is gasoline
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twt
Champion Author Virginia Beach

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Message Posted: Aug 11, 2014 4:12:30 AM

Yes. Gasoline, is for engines. Corn, is food.
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E-Squirrel
Champion Author Orange County

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Message Posted: Aug 11, 2014 2:38:43 AM

Yes, back when you could buy either straight gasoline or "gasohol" in this state. The car ('84 Honda Civic) ran well on it but I did lose about 5 -7 mpg.

[Edited by: E-Squirrel at 8/11/2014 2:39:09 AM EST]
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luvmyrv
All-Star Author Winnipeg

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Message Posted: Aug 10, 2014 10:24:47 PM

Yeah it sucks!!!!
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MertieMan
Champion Author Lexington

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Message Posted: Aug 10, 2014 8:16:26 AM

On average most vehicles lose about 1-4 mpg on ethanol.
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46chief
Champion Author Indiana

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Message Posted: Aug 9, 2014 10:39:19 AM

I lose 7 mpg. as soon as I switch to ethanol.
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GrumpyCat
Champion Author Alabama

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Message Posted: Aug 8, 2014 10:21:09 PM

From E0 to E10 usually makes very little difference but there is something some stations occasionally do which kills MPG by 10% and I haven't figured out what. The local affiliates of a large major brand name used to sell awful gasoline. A 500 mile day have have made 20+ times and never got less than 30 MPG returned 26 MPG. Had to buy fuel before arriving at my destination. The return on other gas was the expected 31 MPG.
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cv
Champion Author Raleigh

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Message Posted: Aug 8, 2014 5:54:30 AM

My truck seems to get a little less mileage per gallon,
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twt
Champion Author Virginia Beach

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Message Posted: Aug 8, 2014 3:38:20 AM

Ethanol, is not petroleum. Do the math.
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JoeKing
Champion Author Manitoba

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Message Posted: Aug 8, 2014 1:19:01 AM

no
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redfish67
Champion Author Dallas

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Message Posted: Aug 7, 2014 9:53:26 AM

no
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PaylessKY
Champion Author Kentucky

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Message Posted: Aug 7, 2014 9:34:15 AM

We have been using ethanol so long, I don't know what my fuel mileage would be without it.
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twt
Champion Author Virginia Beach

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Message Posted: Jul 19, 2014 5:05:54 AM

Simple. Corn oil, doesn't burn as well as gasoline. Nuff said,
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StArrow68
Champion Author Oakland

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Message Posted: Jul 18, 2014 5:56:32 PM

Since we only get e10 in CA it is hard to compare but on a recent trip east I got two tanks of pure gas and that was the best mpg leg of the trip, 29.99 vs 28.5 for the whole trip.
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GrumpyCat
Champion Author Alabama

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Message Posted: Jul 18, 2014 3:04:07 PM

E10 usually doesn't make enough difference to notice but there are some local sources of E10 which result in noticeably poorer MPG. Quite possibly due to water content.

Pure gasoline will hold very very little water. Ethanol will mix with gasoline and carry water with it, up to a point. No matter what, water in the combustion chamber is bad. Normally with pure gasoline water never gets that far. Its easy to drain water out of gasoline but more expensive than the product is worth to remove water from E10.

Water and ethanol mixed together corrode metals and plastics worse than either alone.
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Skyjunky
All-Star Author Portland

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Message Posted: Jul 4, 2014 12:06:26 AM

Heck yes besides all the h2o that can get in the systems and the hoses IF they are gas lines will be brittle or slowly melt be cause of the ethanol
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PaylessKY
Champion Author Kentucky

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Message Posted: Jul 3, 2014 9:38:32 AM

We have been using ethanol for so long, I don't remember.
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badbobKY
Veteran Author Lexington

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Message Posted: Jul 3, 2014 9:24:27 AM

don t use
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puddy
Champion Author Wisconsin

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Message Posted: Jul 3, 2014 8:32:48 AM

yes it is less using the fuel with ethanol in it
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cv
Champion Author Raleigh

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Message Posted: Jun 27, 2014 5:27:43 AM

Yes in my case, it seems like the mileage per gallon is less.
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badbobKY
Veteran Author Lexington

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Message Posted: Jun 23, 2014 9:13:50 AM

no
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OilerFan
Champion Author Tulsa

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Message Posted: Jun 23, 2014 8:11:20 AM

yes. The ethanol mix consistently gives lower mileage in every vehicle I've used it in.
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forresj
Champion Author Wilmington

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Message Posted: Jun 23, 2014 7:52:58 AM

Ethanol does lower overall MPG because 10% ethanol in gasoline has a lower energy density than just 100% pure gasoline.

I drive a 2011 MAZDA 3 hatchback. I don't use any fuel system cleaning additives because ethanol in the gasoline is supposed to clean the engine. But I do use a gasoline stabilizer because I want to keep the gas fresh because I don't drive as much anymore.

[Edited by: forresj at 6/23/2014 7:56:19 AM EST]
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Jackson126
All-Star Author Virginia

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Message Posted: Jun 23, 2014 5:35:57 AM

Lowers my mpg
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carinthuist
Champion Author San Francisco

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Message Posted: Jun 20, 2014 12:36:45 AM

don't use it
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GLM4205
Champion Author Toledo

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Message Posted: Jun 19, 2014 5:40:00 PM

Yes it does lowers you MPG.
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poetdog73
Champion Author Toledo

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Message Posted: Jun 19, 2014 12:14:54 AM

don't use it!
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dontuknowOH
Champion Author Ohio

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Message Posted: Jun 18, 2014 10:32:07 PM

It drops off any time of the year.......
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dave43
Champion Author Iowa

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Message Posted: Jun 18, 2014 2:49:26 PM

YES Its goes down.
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mnrick041
Champion Author Twin Cities

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Message Posted: Jun 11, 2014 9:11:52 PM

I would not know since the ONLY fuel available in Minnesota is a Ethanol mix. I assume that if I went somewhere without Ethanol I might see a increase in my MPG's
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blupupher
Champion Author Houston

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Message Posted: May 12, 2014 10:59:39 PM

My Elantra would get around 10% worse mileage with e-10.
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dontuknowOH
Champion Author Ohio

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Message Posted: May 12, 2014 10:16:30 PM

I believe my engine stays cleaner in the combustion path areas and burns cleaner with the exhaust discharge.

There is a mileage drop off, the percentage varies with docile or pressed driving habits, seems the percentage increases when I press for performance of the cruise/manual go pedal speed against headwinds. Idling Summer and at moderate traffic speeds steady the mileage improves, but always much better before E-10 was added to the reg. 87 of past years.

My vehicle's ECM was reprogrammed when E-10 became the norm fuel at all pumps several years ago to correct exhaust sensor's range of temps, there was a malfunction code/CEL indicated correction free dealer reprogramming effort done.

I have DIYed under-hood projects to reduce engine restart and cold weather warm-up time of the engine/cabin temps mostly for Fall/Winter/early Spring. That can still be improved upon, mainly for Winter use/better mileage. A few more bucks involved for later.... No burn outs(interests)!
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dave43
Champion Author Iowa

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Message Posted: May 12, 2014 5:48:58 PM

yes It sucks.
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carinthuist
Champion Author San Francisco

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Message Posted: May 12, 2014 1:57:46 PM

no don't use ethanol
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Boyrr
Champion Author Allentown

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Message Posted: May 12, 2014 12:15:58 PM

for me, it's 1 - 2 mgg's less with the Ethanol
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dassfg
Champion Author Fort Worth

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Message Posted: May 12, 2014 7:52:58 AM

For fuel economy Go Diesel
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contiki
Champion Author Ontario

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Message Posted: May 12, 2014 6:48:59 AM

Never used ethanol....................
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Jmac2008
Champion Author Missouri

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Message Posted: May 12, 2014 1:19:42 AM

My Mileage goes down about 10% with 10% ethanol in the gasoline compared to no ethanol.
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GrumpyCat
Champion Author Alabama

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Message Posted: May 8, 2014 4:28:26 PM

carinthusist claims, "no don't use ethenol".

Sorry, but you can't get anything but in Kalifornia. All gasoline there has 10% ethanol but for E85 which will have 70% to 85% ethanol.
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CiVX
Champion Author Oakland

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Message Posted: May 5, 2014 12:44:36 PM

It should be less because alcohol has less energy density then gasoline.
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carinthuist
Champion Author San Francisco

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Message Posted: May 4, 2014 11:36:28 PM

no don't use ethenol
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Skyjunky
All-Star Author Portland

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Message Posted: May 4, 2014 8:38:05 PM

yes , on my older vehicles ethanol is crap rusts metal fuel lines and crack ethanol resistant lines and not good on engines. I have seen a drop in my MPG's when I did use ethanol and that is now why I use 92 oct NO ethanol LL in ALL my engines.
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Boyrr
Champion Author Allentown

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Message Posted: May 4, 2014 11:06:04 AM

my mileage is lower by 1 - 2 mpg's when I use gas blended with ethanol.
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Houckster
Champion Author Atlanta

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Message Posted: May 3, 2014 1:10:04 PM

I'm no fan of ethanol but when someone claims they've lost 4-5 MPG with E10, I'm more than a bit skeptical unless they have a high fuel efficiency car where 4-5 MPG is about 3-4% of their gas mileage. Either they've got an overly optimistic memory of what their mileage with gasoline was or they're not computing their E10 mileage correctly.

All things being equal, E10 should cost 3-4% of the mileage one gets with gasoline.
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Don20
Champion Author Oklahoma City

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Message Posted: May 3, 2014 10:54:15 AM

Yes, have lost 4-5 mpg less. Will continue to use all gas why take a chance when you don't know who to believe. Especially in this day and ago..
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NEtracker
Veteran Author Boston

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Message Posted: May 1, 2014 11:13:37 AM

E10, Lost 3-5 MPG
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46chief
Champion Author Indiana

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Message Posted: Apr 30, 2014 2:19:56 PM

Oh yeah! Lost 5-7 mpg. when I used ethanol.
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GrumpyCat
Champion Author Alabama

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Message Posted: Apr 30, 2014 1:49:44 PM

Yes.

Plus back in 2008 when my source of ethanol-free gasoline dried up my carbureted 2008 KTM 450 XCR-W dirtbike ran like crap. Due to EPA heavy-handedness it was marginally lean from the factory but when leaned further with ethanol it barely ran.

So out came the credit card for a $70 jetting kit to get it back into reasonable running tune.
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