Is E85 Ethanol The Solution To High Gas Prices?

Follow Antony

FlexFuel badge on E85-capable 2009 Chevrolet HHR

FlexFuel badge on E85-capable 2009 Chevrolet HHR

Enlarge Photo

Ethanol is often touted as being the future fuel of internal combustion vehicles, as it can be more easily--and more locally--produced than regular gasoline, while producing lower greenhouse gas emissions.

That makes it a further step towards energy independence, but does it make it the fuel of the future?

According to The Detroit News, the answer is no--not in the short term, and probably not ever, in the U.S.

Priced too high

E85 ethanol contains a higher ethanol concentration than current blends such as E10 and E15, mixing 85 percent ethanol with 15 percent regular gasoline.

It's hamstrung by several factors, with price being a particularly relevant one. As of today, regular gasoline averages $3.80 per gallon across the U.S. By contrast, E85 is currently cheaper at $3.39 per gallon.

That makes E85 rougly the same price that gasoline was a year ago--a useful discount--but as E85 contains less energy than regular gasoline, fuel efficiency is lower, making the overall advantage much smaller.

The ethanol industry contests E85's current price, suggesting that the wholesale price of the fuel is around 70 cents per gallon less than regular gas, rather than only around 40 cents.

With that difference, they say, E85 would be much more cost-effective.

Even then, the figures show that some consumers simply wouldn't benefit, unless ethanol was significantly cheaper.

GM's Chevrolet Tahoe, when run on E85, gets only 13 miles per gallon, compared to 17 mpg on gasoline--23 percent lower mileage. E85 would have to be lower than $3 per gallon for Tahoe drivers to see any benefit.

Cheaper in Brazil

By contrast, E85 is significantly more popular in countries like Brazil.

Brazil's E85 is produced with sugar cane, rather than corn as in the U.S. This makes it cheaper to produce, and consistent blends allow automakers to supply a reference card that lets drivers know which fuel would be cheaper to use at any one time.

Inconsistent blends in the U.S, where E85 can contain as little as 51 percent ethanol, make the true benefits of filling up on E85 hard to measure.

Throw in poor availability--mostly limited to the "corn belt", ethanol-producing states--and even Detroit's Big Three, all of which offer flex-fuel vehicles, don't seem keen to promote their offerings. If customers see no tangible benefits, then automakers don't benefit either.


So what does E85 need to see an increase in popularity?

Greater availability, for one. The website currently lists 3,000 E85 stations in the U.S, the majority of which are spread throughout the Midwest. In Northwestern states, only a handful of stations sell E85. By contrast, there are over 100,000 gas stations in total in the U.S.

The next is cost. Given the reduction in fuel efficiency from gasoline to high ethanol blends, the price of E85 needs to drop significantly for it to be financially viable for most customers.

Based on the Tahoe example, E85 would need to be up to a quarter cheaper than gas--and even then, the financial benefits would be marginal.

Of course, the environmental benefits do influence some, and the political benefits of reducing dependence on foreign oil--but conversely, reliance on corn ethanol does then instigate the fuel versus food debate.

The bottom line is that, without a significant reduction in price, E85 is unlikely to be a widely-used fuel of the future.


Follow GreenCarReports on Facebook and Twitter.

Posted in:
Follow Us

Comments (11)
  1. E85 will die. It has no supporters. It tears up engines, increases the cost of food for everyone, and is a disaster. Even the EPA thinks so. Read their expectations in the RFS standards. It is DOA.

  2. E85 is also susceptible to price fluctuation like gasoline. If a major drought hits ethanol producing areas the supply goes down and then of course the price goes up.

  3. You mean a "major drought" like what hit the USA this summer? I expect milk and 1lb ground beef to reach close to $4 per lb/gal shortly.

  4. Guys, I hae noo idea why you focus on a part of the market that will be less than 1% of total vehicles in 2020. There is so much going on this is good, you are missing the boat. Since about 5% of elecricity is from wind and solar, you are focused on coal burner cars for some reason. You need to get the coal companies as advertisers, since this is where most of the power for a Tesla comes from.

  5. @James: Actually, as we've discussed many, many times on this site, 1 mile in a plug-in car is always lower-carbon than 1 mile in a 25-mpg gasoline car.

    Less than half of U.S. electricity now comes from coal. The amount of coal varies greatly by state, but in California (where more plug-in cars will be sold than in the next five states combined), coal is a very small portion of the overall grid mix.

    We focus on plug-in cars because (a) our readers are very interested in them, as demonstrated by our traffic stats; and (b) electrification will be one of the largest trends in automobiles from 2000 to 2050, and it will have profound impacts far beyond simply how a car is fueled.

  6. @ James, you care about where our electricity come from when it comes to cars, what about the rest of the time you use electricity? Your TV technically has a tailpipe and so does everything else in your house that plugs-in. This isn't Green Power-plant Reports.

  7. @James Eckler,

    Why are you repeating your "bias" over and over again when everyone here have been correcting your "coal" data EVERYTIME you post this?

    Stop bashing EVs, you, along with your company is biased b/c your energy consulting business.

    Anytime you look deep, you will always see the naysayers's connection with ignorance or profits....

  8. John, just a comment for the sake of accuray. Brazilian flex-fuel cars do not use E85, instead they run on neat ethanol (E100), blended at the owner's choice. Every fuel station has separate pumps for gasoline (E20/E35) and ethanol (Hydrous E100, meaning there some low percentage of water left in the ethanol).
    Anyone interested in more details, just check the Wikipedia article: Ethanol fuel in Brasil. It is very updated and fully referenced.

  9. Whatever happened to Natural Gas? Now we are expected to pay high prices for real and corn made gas? Not to mention the corn made gas has raised the cost of corn and corn by products (ie milk, beef etc.).

  10. Somebody needs to check their math, because going from 17mpg to 13mpg is not a 13% difference, more like 23%.

  11. Hi Greg, thanks for your comment. Unfortunately that's not a math error, but a typo. Now fixed, thanks for highlighting it.

Commenting is closed for old articles.

Get FREE Dealer Quotes

From dealers near you

Find Green Cars


© 2015 Green Car Reports. All Rights Reserved. Green Car Reports is published by High Gear Media. Send us feedback. Stock photography by izmo, Inc.