Has anyone done a tank-to-tank comparison of Normal and Eco Modes?

AmazingSieve

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Last week, when I was filling up, I decided I would do a run on eco mode. Every where I drove would be in eco. I know it effectively is just engine and throttle mapping but I wanted to see what if any difference I would experience. And I haven't seen much of a change. I'm getting closer to 25mpg now with the same driving as before, same circumstances. So not much of a difference, maybe an extra 15mi per tank maybe a bit more.

My usual mpg is 23.6 when driving with normal mode and that seems to hold pretty consistent. My driving consists of running errands in Denver and a weekend trip to go fishing. Some pretty good elevation changes getting to that fishing spot maxing out around 8,000ft and crossing several small for Colorado passes along with a fairly muddy country road effectively on the way back from the South Platte.

I'm sure some people on here have checked this out more extensively then I have and I'm not too worried about my average MPG so long as it stays above 23 I'm happy.
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KidWiff

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I'm in new england, so LOTS of rural driving and hills to contend with (seems like more uphill than down 🤣 )

If i'm in full time eco mode, and doing my regular routine driving, i get between 27.5 and 28.5 mpg (computer calculated) but that could easily be less if i had a heavier foot in eco-mode.

In very cold weather, i find more towards 26.5 - 27.0
If i spend more time on the highway, 30 mpg in eco mode is fairly easy to attain.
 

Dude

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AmazingSieve

AmazingSieve

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Get with @Mark S. .. he’s done comparative analysis and has a spreadsheet. Lots of posts on the Eco/Normal topic including this one..
https://www.broncosportforum.com/forum/threads/how-much-of-a-difference-does-eco-mode-make.5356/

Post #157
https://www.broncosportforum.com/forum/threads/2-0l-mpg-fuel-mileage.4723/page-11
Welp I guess I asked this question before I kinda forgot about it I guess.

I do appreciate you finding those and I will check them out.
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