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  #25  
Old 04-12-2016, 01:08 AM
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Re: Eco mode, huge difference

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Are they as easy to deal with as Koons?
Easier. Takes a 5 minute phone call. No BS.

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  #26  
Old 04-12-2016, 08:13 AM
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Re: Eco mode, huge difference

I don't know if the Jeep controls it but in my wife's Kia Optima, the ECO mode also controls the HVAC.
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  #27  
Old 04-12-2016, 12:59 PM
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Re: Eco mode, huge difference

Don't recall a time on my '11 that the Eco was switched off,must admit I don't pay no mind to mpg either,just fill up when the gas gauge shows low,should pay more attention I guess!Cant answer on our '15 as my wife is now well seated and in possession of that one,but it's a fair point to monitor mpg on and off so will monitor in future.Thanks for the thread!To me,another interesting one.
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  #28  
Old 04-12-2016, 03:55 PM
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Re: Eco mode, huge difference

I have kept track of every fill up since I bought my 2015 WK2 V6 Pentastar.

Hand calculated numbers...

First 2300 miles with ECO On = 17.9 mpg
Next 3100 miles with ECO Off = 17.3 mpg
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  #29  
Old 04-13-2016, 07:52 AM
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Re: Eco mode, huge difference

One thing that needs to be considered when talking fuel economy is the fuel grade being used. Higher grade fuel provides longer range (better mpg). It will cost more but you need to work out your own dollars per mile figure.

I like to use mid range 95 octane (RON). This provides the best range/power for the price.

USA (AKI/PON) --- Europe (RON)

87 = 91
89 = 93
91 = 95
93 = 98
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  #30  
Old 04-13-2016, 08:01 AM
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Re: Eco mode, huge difference

The only difference I notice is that the Jeep is more willing to upshift when eco mode is on. I haven't really noticed any other difference aside from going into 8th at 45 mph. I now only use eco mode when driving on the highway and not in traffic.
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  #31  
Old 04-13-2016, 10:49 AM
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Re: Eco mode, huge difference

Doesn't Eco Mode allow the MDS System to engage itself more liberally as well?
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Old 04-13-2016, 10:13 PM
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Re: Eco mode, huge difference

Odd side note-to those with the v6/8 speed stating that 8th gear is locked out above 79 mph I had an interesting discovery on a recent trip to Tallahassee, fl. I got my GC up to n 87 mph indicated and sure enough the EVIC showed I was still in 8th gear. Weird.....
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Old 04-14-2016, 07:06 AM
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Re: Eco mode, huge difference

^^I can cruise up to 100mph+ and it'll stay in 8th, as long as it was already in 8th. I can also use the paddle shifters to put it in 8th above 79mph then back into auto and it will stay. It's very annoying.
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  #34  
Old 04-14-2016, 07:14 AM
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Re: Eco mode, huge difference

Under "relaxed" acceleration, mine will go into 8th at around 58 MPH, and will stay there unless I accelerate heavier, or else start going up a grade. On our trip a few weeks ago, I had the cruise engaged at 70 MPH going out of Bullhead City on Rt. 68. The elevation goes from 550 Ft. to 3,360 Ft. in just a few miles. It's right around a 6% grade most of the way. It shifted down into 7th gear, and held it all the way through, until we reached the summit into Golden Valley. It then went back into 8th gear.
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  #35  
Old 04-14-2016, 05:16 PM
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Re: Eco mode, huge difference

I can understand getting better fuel economy using the eco in city driving, but on the hiway I can't see how it makes a difference. Going 74 mph I am in 8 gear around 2000rpm eco off. Now I engage eco same speed 74mph, rpms still the same and still in 8th gear. How can it make a difference if nothing changes am I missing something
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  #36  
Old 04-14-2016, 06:01 PM
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Re: Eco mode, huge difference

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Originally Posted by overlanding View Post
^^I can cruise up to 100mph+ and it'll stay in 8th, as long as it was already in 8th. I can also use the paddle shifters to put it in 8th above 79mph then back into auto and it will stay. It's very annoying.
Thanks for the info. Based on everything i read around here it sounded as if as soon as you hit 79mph the car would downshift into 7th and not allow for upshift into 8th.
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