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Old 04-28-2009, 12:13 AM   #1 (permalink)
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Default ECON Button Question

Today I did NOT use the Econ button on my way to work and back home again and surprisingly I got better gas mileage somehow, a lot better. With the Econ button engaged I have been getting anywhere between 55 mpg regularly and without the ECON button I got 65 mpg today!!! Almost 10 mpg better without the ECON button. What gives? I will keep testing it over the course of the week but has anyone else tried this? I do about the same 20 mile loop every day.
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Old 04-28-2009, 01:21 PM   #2 (permalink)
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for something as small as a 20 mile loop, its tough to compare day to day...and 10mpg can mean a small change over said 20 miles

it could be something like a small temperature increase, slightly less traffic, more luck with a few red lights being green, etc

i would definitely keep testing it over the course of a couple weeks to get better results
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Old 04-28-2009, 03:01 PM   #3 (permalink)
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Default Econ Button

I went back to using the Econ Button again today and it dropped back to 55 mpg from 65 mpg. What is going on? I am trying to drive at the exact same speed and the conditions are relatively the same. Maybe the wind speed plays a role?
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Old 04-28-2009, 03:17 PM   #4 (permalink)
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yep...wind could do it

or about any of the 563575378 factors that effect mpg

like i said, a test over a few weeks should come up with more accurate results
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Old 04-28-2009, 04:51 PM   #5 (permalink)
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Default ECON Button

yeah, but it seems odd that it would happen so consistently without the ECON button on with or without all the factors is involved. There is still one constant variable and that is the ECON mode. Have you tested it yourself by chance?

Quote:
Originally Posted by ikhoudvanu199 View Post
yep...wind could do it

or about any of the 563575378 factors that effect mpg

like i said, a test over a few weeks should come up with more accurate results
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Old 04-28-2009, 11:54 PM   #6 (permalink)
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Need more data. What kind of driving do you do? Try econ mode off for a full range of gas and then with it on with the second tank.

You may be on to something or it could just be a good tailwind.
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Old 04-29-2009, 10:17 AM   #7 (permalink)
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Default ECON Button

I think it might have something to do with how we drive individually. Perhaps my driving habits lead to better mileage without the ECON button on for some reason, although I would sure like to know why for goodness sakes. We have not had extreme weather here so the air conditioner/heater has not been used full power and that is what the ECON mode regulates the most I think. Not sure what else the ECON button regulates when engaged.

I have continued to drive without and I am still consistently getting between 55-60, as opposed to the 45-50 range. I will start taking notes and do some trials on a full tank. Has anyone else messed around with this?
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Old 04-29-2009, 12:40 PM   #8 (permalink)
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Quote:
Originally Posted by Brezel Fan View Post
I think it might have something to do with how we drive individually. Perhaps my driving habits lead to better mileage without the ECON button on for some reason, although I would sure like to know why for goodness sakes. We have not had extreme weather here so the air conditioner/heater has not been used full power and that is what the ECON mode regulates the most I think. Not sure what else the ECON button regulates when engaged.

I have continued to drive without and I am still consistently getting between 55-60, as opposed to the 45-50 range. I will start taking notes and do some trials on a full tank. Has anyone else messed around with this?
I've been lurking on the site for awhile. Have read and learned a whole lot, and took a test drive yesterday and plan to order an Insight 2 later today. So I thought today I'd start participating some.

Brezel Fan:
Thanks for all your postings. The mpg numbers are just the reverse of what I'd expect; 45-50 mpg no ECON, but driving style for good mileage, and 55-60mpg with ECON on and driving style for good milaeage. My first thought is to check for green flower in left corner near the rpm gauge. If its on and green you are in ECON mode. ECON does a whole lot, electronicly, to increase gas mileage.

Second thought is that if the better mileage really is with ECON off you probably have the greatest feather foot known to man, and the highest of driving skill in getting the very most out of every drop of gas!

I don't think wind is enough of a factor to have this much of an effect. Although I did hear of someone who never started their engine with the car standing still. He always gave it a push to get it going, before starting the engine ......you know ..bodys in motion tend to stay in motion, bodys at rest....etc. (It takes the most gas to get a car moving...much less to keep it moving.)

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'96, '98, '00, '02 Saturn SL1 35.75 mpg avg. over-all
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Old 04-29-2009, 12:58 PM   #9 (permalink)
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Here's a question.

Do you use cruise control much during this trip?

I have long suspected that the wild gyrations of the cruise control with ECON on have actually hurt my mileage.
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Old 04-29-2009, 01:16 PM   #10 (permalink)
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Default ECON Button

I do use cruise control as much as possible, definitely more than I did before I had the Insight.

Quote:
Originally Posted by bish79 View Post
Here's a question.

Do you use cruise control much during this trip?

I have long suspected that the wild gyrations of the cruise control with ECON on have actually hurt my mileage.
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