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F10 / F11 (2011 - Current)
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  #1  
Old 09-27-2012, 05:08 PM
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10% Ethanol in Gas Reduces Mileage?

I just completed a nearly 5,000 mile trip in my 2012 535xi, from Minneapolis to Northern California and back. My car did an excellent job, in all kinds of driving situations, and I like it even more. However, in Idaho, North Dakota and Montana the only fuel I could find had 10% ethanol. I was reluctant to use it, but had no choice. My car typically got 31-32 mpg at 70-75 mph until I used the ethanol fuel. Then my mpg dropped by 2 or 3 mpg. Has anyone else had this experience, or have any comments regarding this?
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  #2  
Old 09-27-2012, 05:19 PM
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MMME30W MMME30W is online now
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Yep. About 15% reduction as soon as gas went to ethanol. Pretty conclusive based on my gas log.
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  #3  
Old 09-27-2012, 08:51 PM
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Yup, that's why ethanol sucks. I have the same issue with E85. It might look cheaper, but you get worse fuel economy running E85 vs petrol.
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  #4  
Old 09-28-2012, 04:55 AM
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It's well-known that ethanol reduces gas mileage and reduces engine life. But, it subsidizes the farmers in Iowa who raise corn and keeps the price of corn up. So the American public is paying for the corn subsidy.
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  #5  
Old 09-28-2012, 05:35 AM
The X Men The X Men is offline
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Ethanol has less energy than gasoline, a gallon of pure ethanol contains 34% less energy than a gallon of gasoline.
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  #6  
Old 09-28-2012, 05:41 AM
jjsC6 jjsC6 is offline
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It's all but impossible (well, I think it is impossible) to get ethanol free gasoline in Texas - at least in the Houston and surrounding areas. This issue is a pet peeve of mine. Thank you Uncle Sam.
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  #7  
Old 09-28-2012, 05:53 AM
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Quote:
Originally Posted by The X Men View Post
Ethanol has less energy than gasoline, a gallon of pure ethanol contains 34% less energy than a gallon of gasoline.

Correct. You can look at it as "Hamburger Helper," except that it doesn't help anything but the corn farmers. We can thank our Congress for it......both parties.
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  #8  
Old 09-28-2012, 06:38 AM
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Quote:
Originally Posted by jimpal View Post
I just completed a nearly 5,000 mile trip in my 2012 535xi, from Minneapolis to Northern California and back. My car did an excellent job, in all kinds of driving situations, and I like it even more. However, in Idaho, North Dakota and Montana the only fuel I could find had 10% ethanol. I was reluctant to use it, but had no choice. My car typically got 31-32 mpg at 70-75 mph until I used the ethanol fuel. Then my mpg dropped by 2 or 3 mpg. Has anyone else had this experience, or have any comments regarding this?
Think of it as a transfer of money from your pocket to the Ethanol industry participants and the politicians. The same happens with credit card laws and prescription drugs for sale on TV. The politicians pass the laws at the request of those who fill their pockets and you and I get screwed
Are you feeling a little down this morning? It is not your fault! you just need pill X to make it all right as it should be
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  #9  
Old 09-28-2012, 11:50 AM
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Vote with your wallet: http://pure-gas.org/
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  #10  
Old 09-28-2012, 12:00 PM
The X Men The X Men is offline
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Let me ask a dumb question, is there a substitute oxygenator that is better or safer than ethanol?
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  #11  
Old 09-28-2012, 01:01 PM
jjsC6 jjsC6 is offline
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Originally Posted by v12 View Post
Vote with your wallet: http://pure-gas.org/
I'd love to vote with my wallet, but I don't see any stations on that list anywhere near the Houston area, which (ironically) is considered the oil capital of the world. So much for the free enterprise system at work - the government has effectively made it illegal for major oil companies to sell gas without ethanol.
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  #12  
Old 09-28-2012, 01:25 PM
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None in NYC (where I am) or NJ either.
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  #13  
Old 09-28-2012, 01:36 PM
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It's mind-boggling that 10% ethanol content can affect mileage by 10% or more. And yet, that seems to be most people's experience.
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  #14  
Old 09-28-2012, 03:42 PM
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The list only shows five stations in California and I'm afraid that is it. We cannot buy pure gasoline in this State . . but, it is comforting to know that many people are filling their pockets at our expense
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