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  #61  
Old 10-18-2013, 04:25 PM
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Re: POST 2014 V8 MPG's

5.7 4x4. I do an honest 85% city on my 11 mile each way commute, low speed, lots of stop lights but not any stop and go traffic. My worse tank per fuelly was 15.4 mpg.

I'm currently averaging 15.9 with about 4300 miles on the Jeep. The only freeway the jeep has seen so far is with a pop-up camper in tow.

Overall, the mileage is about what I expected. My best tank so far as 17.6, but that was 100% open road towing so actually not bad. I have yet to do a long drive without dragging something to see if I can get the 20 plus others report.

We get crap blended boutique gas here due to proximity to Chicago, in the EPA attainment zone... this is good for a 2 mpg hit based on my experience with my other vehicles.
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  #62  
Old 10-20-2013, 09:59 AM
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Re: POST 2014 V8 MPG's

Have a bit over 2000 miles since taking delivery on 8/22. Getting around 17.5 MPG driving mostly rural backroads.
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  #63  
Old 10-20-2013, 02:50 PM
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Re: POST 2014 V8 MPG's

1200 miles so far with about 70% highway and have averaged 19.2 so far. Love the tall geared 8 speed!
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  #64  
Old 10-21-2013, 11:10 PM
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Re: POST 2014 V8 MPG's

I think all people should post what size wheels and tires they have as well as the oil they use in addition to just V8 and 8 speed and mileage baseline.

Our 14 GC Limited 4x4 Hemi V8 with 265/60/18 tires with close to 18000 miles gets about 22mpg on 90% hwy 10% city with no traffic just lights. It is not babied and it is not raced. Use mobil 1 5w20 oil every 5k miles in it. Use 89gas with ethanol. Mileage seemed to get slightly better and better past the 10k mile part. Overall we are very pleased since it gets slightly better mpg than an 11 we had with the v6 penstar engine. Having better mpg with what feels like double the power is awesome!

Also to someone posting earlier on gasoline quality. It either has ethanol in it or it does not and that will effect mileage as well. As far as different quality gas out there that is a hype. Why I know this is because I used to haul gasoline/fuel. It comes from the same places and there are only so many of them! All of the different names its sold under with their so called additives is a joke. It is all the same people!! Only differences are the grade of gas and if it has ethanol in it or not, but not who it is sold by. Unless of course the stations tanks are bad or they sell like a gallon a year.
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Old 10-22-2013, 08:43 AM
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Re: POST 2014 V8 MPG's

We really do get special summer gas here, it is a reformulated oxegenated blend with even more bonus ethanol for even crappier mileage! The fact that it is unique means we get to pay even more for it....

Filling up in town verses outsize of the zone, you can readily notice the difference in smell of the gasoline, in addition to the better mileage.

Currently Designated Nonattainment Areas for All Criteria Pollutants | Green Book | US EPA
Why Gas Is So Expensive During the Summer (And Especially in Chicago) | Chicago magazine
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Old 10-24-2013, 02:14 PM
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Re: POST 2014 V8 MPG's

Quote:
Originally Posted by weck View Post
We really do get special summer gas here, it is a reformulated oxegenated blend with even more bonus ethanol for even crappier mileage! The fact that it is unique means we get to pay even more for it....

Filling up in town verses outsize of the zone, you can readily notice the difference in smell of the gasoline, in addition to the better mileage.

Currently Designated Nonattainment Areas for All Criteria Pollutants | Green Book | US EPA
Why Gas Is So Expensive During the Summer (And Especially in Chicago) | Chicago magazine
That sucks!! Ethanol in a 10% blend of gas adds 2 points to an octane number of the gas you are actually getting. So If they can put in more ethanol into the mixture, they can give you a lower quality base gasoline but still market it at the same octane rating. Don't they have to let the consumer know how much ethanol is actually in it? I read the article and am glad we do not live in a big city right now. They are giving you a crap product due to regulations and yet are making you pay a premium for it. If ethanol does not make the gas cheaper but more expensive than why use it? Oh wait I think we can all answer that one.
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  #67  
Old 11-02-2013, 07:47 AM
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Re: POST 2014 V8 MPG's

Hmm.... 14 mpg mixed driving but the highway portion is really bumper to bumper tomand from work each day .

The v6 slightly better mpg isnt worth it to give up the v8
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  #68  
Old 11-18-2013, 08:51 PM
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Re: POST 2014 V8 MPG's

Highway mileage has been good on my 2014 5.7L so far. Took a short trip up the highway over the weekend there and back was 80 miles. Had cruise set at 65 most of the way and evic showed 25.8 mpg for the round trip. Trip was rolling hills but no mountains. Mixed highway and city have been doing about 17-18 mpg. Overall mileage has been a little better than I expected, will be taking a long trip in the next few months and will check how it is on the longer trip.
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  #69  
Old 09-14-2014, 08:47 AM
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Re: POST 2014 V8 MPG's

Hi all. I wanted to revive this thread to see how the 2014 v8's are doing for mpg's. Mostly interested to see 4x4 overland/summit numbers. I'm still researching engines and would mostly be 80% city driving and sometimes towing up to 1700lbs on longer trips

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Old 09-14-2014, 09:42 AM
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Re: POST 2014 V8 MPG's

2014 Summit 4X4. Average around 18.5 around town; mix of city & highway driving. About 22.5 straight highway. Traded a V6 Overland for the Summit. V6 had no guts.


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  #71  
Old 09-14-2014, 10:59 AM
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Re: POST 2014 V8 MPG's

I have an Overland V8 4x4. I average an honest 19 mpg (hand calculated) commuting 50/50 city and highway. I don't get on the gas a whole lot. I've learned to feather the throttle when on level ground or going slightly downhill. I have the instant MPG display on the upper right of my EVIC display and I keep an eye on it to monitor fuel consumption. I also coast to stoplights etc. I notice most people driving around me are in a hurry to get to the next red light. It's funny. I also try not to use the brake unless I have to. Slowing down for no reason is wasting gas, as you have to accelerate again. Again, I see people around me hitting their brakes when going down a slight incline, even going the speed limit, and with no one around them. Leave your brake pedal alone!! lol

Considering all this, I might have been happy with the V6. But driving thru the mountains and being able to pass 3-5 cars without thinking about it on a two lane road are some of the reasons I got the V8. Plus it's very smooth and moves the Jeep effortlessly. In my book, I'd rather have PLENTY of power when I want it, rather than regretting not having enough power. If I have to pay a 1-2 MPG penalty for that power, so be it. It's worth it to me.

I had a 2004 Toyota Tacoma crew cab with the V6. It got 17-18 mpg on a similar commute, except it was about 7 miles longer freeway driving. It was as gutless as can be on the freeway. It would downshift out of overdrive on the most insignificant incline, or a 5 mph headwind. I got rid of it after less than one year.

I tried using ethanol-free fuel for a bit. I got about 30-40 miles more per tank using it. Ethanol-free fuel seems to be catching on a bit around where I live, and the gas station has jacked up the price accordingly. Now it's not cost effective at $.42/gallon more than 10% ethanol 87 octane, so I'm back using the junk gas lol.

Here's a pic, going 65 MPH on a flat Oregon freeway. Almost 25 MPG, for a 5000 lb ride with 360 HP. I can't complain:

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  #72  
Old 09-14-2014, 11:00 AM
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2014 overland. I'm getting around 18 in town and 22 on the highway. I live in a moderately hilly area in western Pennsylvania.
These are summertime numbers that do drop in the winter to around 16 and 18.
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