E10 mpg?

[Busterboo]

Ethanol has a lower calorific value than gasoline so your gallon is now in effect less effective so its impossible to achieve more mpg on a lower calorific fuel. Ethanol is however 'greener' so it lowers your emissions per gallon which is the governments aim.

So we should all be reporting a decline in mpg.

 

[Busterboo]

V power has the habit of cleaning out crap. Might have moved something to block injector.

Yes, I thought that. However, the indy and the AD both came to the conclusion that the problem was caused by an upper engine oil leak and, under insured warranty, the AD fixed it.

 

[mcbutler]

Ethanol has a lower calorific value than gasoline so your gallon is now in effect less effective so its impossible to achieve more mpg on a lower calorific fuel. Ethanol is however 'greener' so it lowers your emissions per gallon which is the governments aim.

So we should all be reporting a decline in mpg.

You would expect so bud

 

[pvr]

Ethanol has a lower calorific value than gasoline so your gallon is now in effect less effective so its impossible to achieve more mpg on a lower calorific fuel. Ethanol is however 'greener' so it lowers your emissions per gallon which is the governments aim.

So we should all be reporting a decline in mpg.

You would expect so bud

That is what is reported as an expected side effect of using E10

 

[Busterboo]

So we should all be reporting a decline in mpg.

That is what is reported as an expected side effect of using E10

Where, please?

 

[pvr]

So we should all be reporting a decline in mpg.

That is what is reported as an expected side effect of using E10

Where, please?

Example: https://www.topgear.com/car-news/top-gear-advice/uk-has-switched-e10-petrol-heres-what-it-and-what-it-means

In an engine, burning a less energy-dense fuel means that you need to burn more of it to get the same amount of power. This doesn’t mean that you’ll lose power if you use E10; rather that your fuel economy will drop as your car’s engine computer fiddles with fuel-air ratios to get the best stoichiometry (a fancy-pants term for the ideal mixture). So while the carbon count goes down with ethanol-blended petrol, fuel consumption goes up.

Or RAC: https://www.rac.co.uk/drive/advice/emissions/what-is-e10-fuel-and-how-could-it-affect-you/

“And those with E10 compatible cars will unfortunately find they are getting fewer miles to the gallon as the fuel is less efficient than E5 fuel, due to it containing 5% more ethanol.

Or Autocar: https://www.autocar.co.uk/car-news/new-cars/new-e10-fuel-could-reduce-cars-economy-10-cent

New E10 fuel could reduce a car's economy by 10 per cent

 

[Smartbear]

Wow, that’s shocking! I’d heard of a 3% drop in economy before but not as high as 10%, that’s an even better reason to run on super-unleaded
Rob

That is what is reported as an expected side effect of using E10

Where, please?

Example: https://www.topgear.com/car-news/top-gear-advice/uk-has-switched-e10-petrol-heres-what-it-and-what-it-means

In an engine, burning a less energy-dense fuel means that you need to burn more of it to get the same amount of power. This doesn’t mean that you’ll lose power if you use E10; rather that your fuel economy will drop as your car’s engine computer fiddles with fuel-air ratios to get the best stoichiometry (a fancy-pants term for the ideal mixture). So while the carbon count goes down with ethanol-blended petrol, fuel consumption goes up.

Or RAC: https://www.rac.co.uk/drive/advice/emissions/what-is-e10-fuel-and-how-could-it-affect-you/

“And those with E10 compatible cars will unfortunately find they are getting fewer miles to the gallon as the fuel is less efficient than E5 fuel, due to it containing 5% more ethanol.

Or Autocar: https://www.autocar.co.uk/car-news/new-cars/new-e10-fuel-could-reduce-cars-economy-10-cent

New E10 fuel could reduce a car's economy by 10 per cent

 

[Busterboo]

New E10 fuel could reduce a car's economy by 10 per cent [emphasis added]

Thank you, pvr.

My car use is consistent and, since E10, the mpg's improved slightly, so perhaps the motoring journalists aren't infallible. But, hey, like all journalists, they're scum, anyway.

 

[Nanu]

This thread was asking the question does E10 fuel give you less MPG. From my experience the answer is no. I just wonder if part of the reason for the price rise is the extra Ethanol which is being masked by the general rise in oil prices worldwide.

 

[pvr]

Or even "dangerous" / "Criminal" reduction in fuel efficiency :lol:

https://www.msn.com/en-gb/cars/news/its-actually-dangerous-drivers-target-e10-petrol-over-criminal-fuel-efficiency-drop/ar-AAQSlwA?ocid=media_redirect&li=AAnZ9Ug

 

[B21]

As others have said ethanol has a calorific density around 34% worse than petrol.

Therefore a simple calculation would suggest that E10 fuel consumption would be about 3.4% worse than pure petrol.

However pure petrol doesn’t exist in the wild, petrol already has additives known as oxygenates which dilute the petrol but improve the burning processes and reduce soot. So the disadvantage reduces typically to 1-2%

Even then it’s not over..most modern engines vary the ignition timing, advancing as much as they can to improve efficiency.

Alcohol rich petrol has a higher octane rating than non alcohol petrol.

Modern cars can take advantage of that to improve efficiency…

It’s not beyond possibility that those efficiencies are greater than the loss caused by calorific dilution.

Ergo it’s not unreasonable for a driver , depending on his driving profile to see no perceived deterioration in mileage with the change from E5 to E10.

 

[mcbutler]

Or even "dangerous" / "Criminal" reduction in fuel efficiency :lol:

https://www.msn.com/en-gb/cars/news/its-actually-dangerous-drivers-target-e10-petrol-over-criminal-fuel-efficiency-drop/ar-AAQSlwA?ocid=media_redirect&li=AAnZ9Ug

You get your news from MSN
This reads like a tabloid muppet journalist scribed it.