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  #25  
Old 01-01-2016, 10:20 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by canistel View Post
You guys are fooling yourselves if you think there is only a 1.5 mpg difference. Enjoy the v8 power, but beyond me how you guys try to wiggle and squirm when it comes to mpg.

There is _at least_ a 4 mpg difference when actually tested by a neutral party:
Fuel Economy of 2014 Jeep Grand Cherokee 4WD

When you're talking 20 mpg, 4 mpg difference is like a 20% difference. Yes, 20 percent!
Few people do 100% highway or 100% city most do some form of mixed driving, the EPA mixed driving numbers between the v6 and v8 is 3 mpg which is a better comparison to his "suburban driving" numbers he observed. In real world mixed driving Car and Driver managed a 1 mpg difference between the 2014 8spd v6 and v8 GC, the reason they gave for this was the v6 had to work a lot harder to move around the heavy suv. other folks on here that have owned both reported about a 2 mpg difference in mixed driving. What he observed is not out of line, the v6 he drove is new so it will loosen up some but not substantially.

the v6 will get better mileage, its just not dramatic its a little more real world and with todays fuel prices, well everyone can make their own decisions. There is just not currently all this grand fuel savings there, the upfront cost is what people really need to consider, the v8 is around $3500 more if you don't need it or want it save the money there.

This 2016 ESS v6 thing they are coming out with will hopefully be able to put a little more distance and bigger needed gap between the two in fuel numbers but lets wait and see what the actuals are.

Trying to compare fuel numbers is like herding cats, with a 1000 different drivers you will have 1000 different driving styles and 1000 different results. people have to make their own decisions for their own situations.

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  #26  
Old 01-01-2016, 10:55 AM
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Got a High Altitude V6 overnight. Compare to Summit V8.

I was getting 13.5 with the Hemi. With the V6 I was getting 19.3 with Eco mode on, and now getting 17.2 using a combination of Eco mode on and occasionally sport mode and accelerating quicker.
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  #27  
Old 01-01-2016, 11:29 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by Houghton Lake,MI. View Post
Hey what's going on here. The V8 goes 0.9 more in distance and three minutes less time. Always loved a V8, old school !
Yeah that's because on my commute going to work one of the roads is one way so the drive is slightly different when i'm about a mile from work. To make things a bit more fair, I will be doing the test going to work again today in my Summit that way both tests were literally the exact same of everything....outside temp, time of day, Eco on, even fuel quantity is the same, exact same route, and will be driving both in the exact same manor. Even traffic is not a factor as these are all back roads. So IMO this is as legit of a test as its gonna get.

I know one person got a little upset or offended or whatever in an earlier post, but this test is by no means to make any one engine look bad. I was truly curious about the V6 and 8spd as I was potentially very interested in owning the V6 setup. There is no doubt whatsoever that the V6 will win in mpg in every instance every day of the week. We already know this. The other main reason I'm doing this is because as far as I know no one else here has ever done an exact side by side comparison. It's just a way to get real world numbers because its a hot topic that comes up frequently.
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  #28  
Old 01-01-2016, 11:42 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

I've owned both and personally, I'm only experiencing a 2mpg difference on a good day.
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  #29  
Old 01-01-2016, 01:36 PM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

JTS
I understand about trying to get as close as you could on the same drive .
It just boils down to many if the $3750. is needed or worth it for the Hemi.
The mileage difference is not an end all measure for me . Do I want more Miles to the gallon. Sure I do , I wish they could get 23 mph out of the V8 highway and 20 city as an average .
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  #30  
Old 01-01-2016, 02:04 PM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

wife has a 15' V6 limited and gets a fraction over 20mpg while my V8 gets 14.5, I know driving style is different but we have basically the same commute with very little hwy type driving mixed in
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Old 01-01-2016, 02:26 PM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

Ok pretty much the same results today going to work. I think the Hemi would suffer more in a city like environment, but for my type of commuting the differences are minimal.

Same drive to work. Atleast I know the speedos are accurate :-)
V6 HA:


V8 Summit:
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Old 01-02-2016, 01:39 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

Sounds like you need a 2016 Summit V8.
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  #33  
Old 01-02-2016, 09:00 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by farfromovin View Post
Sounds like you need a 2016 Summit V8.
Why's that?
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Old 01-02-2016, 10:26 AM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by silvermax04 View Post
Few people do 100% highway or 100% city the v6 will get better mileage, its just not dramatic its a little more real world and with todays fuel prices, well everyone can make their own decisions. There is just not currently all this grand fuel savings there, the upfront cost is what people really need to consider, the v8 is around $3500 more if you don't need it or want it save the money there.

This 2016 ESS v6 thing they are coming out with will hopefully be able to put a little more distance and bigger needed gap between the two in fuel numbers but lets wait and see what the actuals are.

Trying to compare fuel numbers is like herding cats, with a 1000 different drivers you will have 1000 different driving styles and 1000 different results. people have to make their own decisions for their own situations.


I did a similiar test, earlier this year. I own a 14" v6 and a friend let me borrow his 14 hemi. in Chicago city driving I was getting 14.6 -15 with the v6 on my route within the busy city limits . with the hemi I was getting 9-11mpg with the Same route in the city.

I took both cars out in the suburbs of IL where traffic is less stop and go and noticed that difference Become smaller. similiar to what everyone reports here 1-2 mpg difference

in a busy city that has a lot of stop and go driving I believe is where you will notice a bigger difference between 3-4mpg in a more suburban setting where traffic is flowing better the difference is less noticeable with the v8. that's from my experience


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  #35  
Old 01-02-2016, 12:18 PM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by JTS97Z28 View Post
Why's that?
You like the lighter steering, the V8 sound and grunt, and the Summit interior.
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  #36  
Old 01-02-2016, 03:06 PM
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Re: Got a High Altitude V6 overnight. Compare to Summit V8.

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Originally Posted by farfromovin View Post
You like the lighter steering, the V8 sound and grunt, and the Summit interior.
That's a change coming to the '16 V8? Oh cool!
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