Check your gas mileage lately?

My car runs on water, you need to get a hydro-4000

http://www.hydro4000.com/

Ethanol contains ~30% less energy per gallon than pure gasoline. Considering that pump gas contains only 10% ethanol, that means each gallon of pump gas you get would contain just 3% less burnable energy than a gallon of pure gasoline. Your gas mileage shouldn't drop by more than 3% as a result of adding 10% ethanol to gasoline.

A 3% reduction in mileage in a car getting ~20mpg (which is what you say you were getting with pure gasoline) is a drop of only 0.6mpg. Your numbers say you're experiencing a drop of about 3mpg - meaning either something else besides ethanol addition is causing the large drop in your fuel mileage or you need a larger sample size (like comparing mileage figures after burning through 3 full tanks of fuel instead of comparing results after just 7 gallons of fuel before and after).

The larger sample size will add accuracy to your mpg measurements because it's possible to drive differently enough in just 120-140 miles to experience a drop or rise in mpg due to driving conditions/style. Those differences will even out over the span of a 1000-1500 mile sample size.

Ben Linus has the best answer. Since ethanol contains up to 30% less energy than gasoline, and since there is only 10% ethanol in E10, there is only a 3% decrease in fuel economy--hardly discernable except if one were to measure several tanks run on E10 and pure gasoline.

There may instead be something going bad with your vehicle. Perhaps you need a tune-up?

As to the economics, since we are producing more fuel, increasing our fuel supply, we are keeping our fuel prices lower than they would have been without alternative fuels being available. Merrill Lynch reported that fuel prices are lower than they would be by 15%, due to ethanol stretching our fuel supplies. That 15% more than makes up for a 3% loss in mpg's.

trying to measure mileage on a 1/4 tank is a loser...fill up drive a distance [say 200 miles] and fill up..then do the math....but you r correct about the mileage going down...its well known E 10 fuel is not up to pure gas...the govt went to alcohol for several reasons...pay off farmers....pollution lowering...and to get rid of octane booster mmbt..a deadly poison that was leaking into the water around gas stations...truth is the gas company's would rather sell gas and not mess with ethanol...[they dont own or grow it and have trouble transporting it..]

You are dead on! No games and no doubt about it, fuel economy suffers with 10% ethanol. I think it's a "ripple effect" when the off-shore oil companies had us by our shorts with high gas prices the mid-western US corn suppliers hustled around to produce ethanol making corn.

Don't forget, this is our liberal congress at work! They established the subsidized program to raise corn as fuel instead of food. I refuse to give it a capital C any more.

Yeah the ethanol reduces your gas mileage. Some gas stations have ethanol free gasoline. I've seen some close to popular fishing spots. I'd be ok with E85 as long as they charge me a quarter per gallon for it.

ethanol has been adding to fuel for about 20 years now under 10% didnt list it wasnt any good for cars then or now

but what one does is test a few brands and octane to know which fuels get you the best mileage with and use that brand or octane

its like say my nissan gets great mileage with shell high octane but gets same mileage with mobil regular... and i check mine almost every week

and yes goverment is getting the profits nothing as change

rich get richer

poor get well screwed

whats new about that

I hate to say it but you missed the memo on this one. They have been putting ethanol in gas for a long time.

They've been putting ethanol in gasoline for 2 decades. Where the heck have you been?

Yes, it helps increase gas mileage and save the environment, but we will have nothing to eat when we burn all our food and will rely on countries for FOOD, too.

yup its all politics ethanol prices have dropped so they want to use ethanol from sugar cane and corn rather then feed people they are burning it in cars.....