To run E85 you generally need to retune your car so it is hard to do like for like. People generally tune for power instead of economy. But yeh, 30% is about right.
Are any of you noticing a fuel economy impact running E10?
- Thread starter Iamzod
- Start date
To run E85 you generally need to retune your car so it is hard to do like for like. People generally tune for power instead of economy. But yeh, 30% is about right.
You need to read what you write. Then seriously think if it comes across correctly.
What you wrote in your last paragraph would make me want to simply avoid you. Not out of fear or respect, simply due to your attitude.
Your ego is worse than an Irish fella who is into MMA...
You also don't use the trip computer to work out MPG.
It's a maths formula based on a full tank used.
My cars OBC is frequently 2-6mpg out either way.
Anyway, keep banging that drum..
Associate
I'm definitely noticing it being used up much quicker, have a seat Toledo and a Skoda fabia, same engine definitely noticing both not go as far on a tank fill. Tempted to go for lpg on the next car I buy, thinking a duster at the mo
Well, since the wife tested positive for Covid the day after starting this thread i've been doing literally all of the running around for the last week.
Wednesday morning came around & I managed to time it so i'd hit a shell station a few miles away from home with the car running on fumes so as an experiment I brimmed it with Shell Vpower whereas it's been filled with Shell E10 ever since they released it.
Going by the trip computer running a 3.6 mile portion of the same stretch of road from where I live to the nearest M1 junction on a pre-warmed engine with the cruise set at 50 i've got an increase in MPG displayed from 33.7MPG at 6.5c to 37.9MPG at 1.0c, it's only 1 run on each fuel of course but it's a dual clutch and given it was a clean run without having to brake or disengage cruise literally all I did was steer I can't see how there could have really been any other variables, it was a good bit colder too on the run with the higher figure.
Wednesday morning came around & I managed to time it so i'd hit a shell station a few miles away from home with the car running on fumes so as an experiment I brimmed it with Shell Vpower whereas it's been filled with Shell E10 ever since they released it.
Going by the trip computer running a 3.6 mile portion of the same stretch of road from where I live to the nearest M1 junction on a pre-warmed engine with the cruise set at 50 i've got an increase in MPG displayed from 33.7MPG at 6.5c to 37.9MPG at 1.0c, it's only 1 run on each fuel of course but it's a dual clutch and given it was a clean run without having to brake or disengage cruise literally all I did was steer I can't see how there could have really been any other variables, it was a good bit colder too on the run with the higher figure.
3.6 mile portion?
You see there are loads of things that could severely affect such short journeys. How cold is the air temp? Cooler air temps are actually good for the car once warmed up. Even slight differences in traffic. Is your alternator working a bit harder from one run versus the other to top up the battery? How does your car react to 99 ron fuel?
My mpg doesn't stay the same from one 500 mile section to the next and can deviate by up to 10% even for the journeys made up of the same commute every day. I use odometer and fuel filled as the proper measure as the car computer is terrible at estimating mpg.
What people aren't doing are properly controlled large sample tests and that is why nothing I've seen is convincing.
Last car:
Current car:
You see there are loads of things that could severely affect such short journeys. How cold is the air temp? Cooler air temps are actually good for the car once warmed up. Even slight differences in traffic. Is your alternator working a bit harder from one run versus the other to top up the battery? How does your car react to 99 ron fuel?
My mpg doesn't stay the same from one 500 mile section to the next and can deviate by up to 10% even for the journeys made up of the same commute every day. I use odometer and fuel filled as the proper measure as the car computer is terrible at estimating mpg.
What people aren't doing are properly controlled large sample tests and that is why nothing I've seen is convincing.
Last car:
Current car:
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Just to update on this, performance seems to have improved so either the car was "adjusting" to the different fuel or it was just having a bad few days. Still not quite on par with what I'd get from M99 but good enough. I'll still be sticking with M99 or similar though.
3.6 mile portion?
You see there are loads of things that could severely affect such short journeys. How cold is the air temp? Cooler air temps are actually good for the car once warmed up. Even slight differences in traffic. Is your alternator working a bit harder from one run versus the other to top up the battery? How does your car react to 99 ron fuel?
My mpg doesn't stay the same from one 500 mile section to the next and can deviate by up to 10% even for the journeys made up of the same commute every day. I use odometer and fuel filled as the proper measure as the car computer is terrible at estimating mpg.
What people aren't doing are properly controlled large sample tests and that is why nothing I've seen is convincing.
Last car:
Current car:
Yep, 3.6 miles as it's a reliable 3.6 mile stretch of road where I know that I have to do nothing but steer which takes out variables like accelerating, braking & gear shifts, you just sit at a solid 50mph all slightly uphill.
It's a 50 limit with 3 cameras along it and is a fairly quiet stretch with little traffic interference unless you catch a HGV or Tractor.
I'm not going to repeat it on purpose of course but every time I traverse that stretch I might reset the trip and record mpg, and temperature out of interest.
And I know that the trip is terrible & tends to be optimistic but i'm looking at the variation rather than the outright figure.
Worth noting that while Super is marked as E5 on the pump it's only an "up to", a number of brands (I.E ESSO) have Ethanol free Super so the MPG advantage over E10 will be even more pronounced.
Man of Honour
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That is indeed interesting. Any other brands with ethanol free super?
Soldato
100% getting way lower, I've had to take the hit and be running E10 in my Xedos and it's dropped massivly in general everyday driving... so I don't care what the "authorities say", you get less energy per bang and thus you get less mpg, simple as that and my Xedos is down around 20+ percent easily
