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Old 08-27-2013, 05:33 PM   #961
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What gearing do you have? When I was test driving a few, I did notice the unlimited with a max tow package (3.73) read higher than a jeep with 3.21 taken on the same test drive route. I'm from Canada, it was about 14.2L per 100km vs 13. We just picked up a Sahara with 3.21 gearing yesterday. I noticed on the highway, the reading dropped below 10, but with a lot of stop and go city driving in Ottawa the last 2 days, I'm back up to 13. It's quite a bit better than the 2010 we just sold. Wayyy more power too.

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Old 08-27-2013, 05:41 PM   #962
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At only 1500 miles your not even out of the break in period for the engine. Apples to Oranges here, but I bought a new subaru back in march and was initially getting about 26 mpg. 9000 miles later it is now averaging around 29 mpg. Get to 5000 miles, then start complaining.

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Old 08-27-2013, 05:45 PM   #963
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2500 miles, averaging 15.6. Mostly in town
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Old 08-27-2013, 05:59 PM   #964
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2Door Rubicon with 4.10s here, I average around 16-17 when I drive normally(IE; lead foot), and a little over 18 when I drive conservatively, and that is normal city driving.

Going 80-85 down I-10 is significantly worse gas mileage, I think I averaged around 13-14.
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Old 08-27-2013, 06:04 PM   #965
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It varies widely with how you drive, even on the highway. Once you get much over 60 mph on the highway, wind resistance takes its toll. In my commuting which is about 75% hwy, I can average 21-22 if I drive easy and keep it at 60 or below on the hwy. If I drive 65, my average is about 20. I have a 6 speed with 3.73 gears
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Old 08-27-2013, 06:18 PM   #966
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2013 JKUS auto, 3.73. I get 13 towing a 3500 lb boat. In the hills. With 33 in KM2s. 2500 miles I'm avged at about 18. 20 on the hwy and 17 or so in town. Check your tires. Keep your foot out of the skinny pedal, don't trust the EVIC. Its ALWAYS wrong.
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Old 08-27-2013, 06:25 PM   #967
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Take a long, slow (50 mph) drive on a flat country road somewhere for a long time, preferably on a warm, still day. I bet your MPG goes way up for that trip.

Start and stop and idling kill your MPG in the city, driving fast, wind, and cold weather (both due to wind resistance and winter gas) kill your MPG on the highway.
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Old 08-27-2013, 06:28 PM   #968
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16.6mpg since I've been tracking it over the last month. 10A JKUR with 4.10 gears/auto, completly stock. More details in the link below.

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Old 08-27-2013, 06:39 PM   #969
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16 +/-. Driving a 10A JKUR, max tow package (3.73 ???). Driving mostly highway at this point.

Like you, I was watching the mileage calculation. Started driving me nuts. Finally just figured that JK's (especially JKU's) are not really designed for mileage. It's going to be bad, just a matter of how bad.

Read on another similar post that the MPG listed on the stickers is actually an average across the entire line of a specific vehicle. Somewhere out there is a JK Sport getting 21. But I doubt many are getting close in a JKU and certainly not in a JKUR.
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Old 08-27-2013, 06:45 PM   #970
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We get about 17 around town(wife's DD), and maybe a little higher on the highway (Rubicon, manual trans).
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Old 08-27-2013, 06:51 PM   #971
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GVW 2013 JK Sport: 3,850 +/- lbs.
GVW 2013 JKU Sport: 5,400 lbs.
GVW 2013 JKU Rubicon: 5,700 lbs.

This alone will affect mileage, regardless of driving style.
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Old 08-27-2013, 07:03 PM   #972
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I have a 2012 JK Sport. My gas mileage increased after in hit about 15000 miles. Also in Oklahoma we have a gas option and I don't burn ethenol I only burn 100% gas and get 60 miles more per tank that way. The cost difference is .05 cents a gallon.
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Old 08-28-2013, 08:12 AM   #973
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That is correct about ethanol. The more ethanol in the fuel the lower the mpg. Mine is a JKU Sport with max tow pkg (3.73 gears). Any idling is a major mpg killer. You can actually watch the evic guage drop if it has been recently reset. My evic has been surprisingly accurate most times within 1/2 of calculated but a few times has been off by almost two mpg. Some guys I know locally get better mpg in the JKU with the lower gears (3.73 - 4.10) than the higher geared ones. Don't know much about the JK.
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Old 08-29-2013, 01:10 AM   #974
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We took a family trip, 500 km's away to pick up our new unlimited. We recently sold our 2010, and were pleasantly surprised about the better fuel economy of the 2013. We drove slightly over 500kms home, and used 9.5L per 100kms. That translates to 24.8 MPG in US terms. The evic showed we could travel another 300kms with what's left in the tank!

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Old 08-29-2013, 01:40 AM   #975
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I have jk sport and still haven't broke 18 yet. Just drove from nor cal to so cal then Vegas and back. I have about 2500 miles. Not impressed yet,but it sure is fun to drive....
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Old 08-29-2013, 08:35 AM   #976
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Without getting too technical there is only so much energy in one gallon of crude oil. When crude oil is distilled the major components are heavy oils, lubricating oils, diesel/home heating oils, kerosene, gasoline, and then many gasses. Ethanol is distilled from sugar cane or corn. Diesel for example has approx 130,000 btu's of energy vs. gasoline which has 120,00 btu's vs. 80,000 btu's for ethanol, so ethanol simply takes more of it to generate the same power in your jeep. Ethanol is cleaner to distill, burns cleaner and combusts more readily which is why it is added to fuels in cold climates. Like many things in life, its about trade-offs. At this point it costs a lot more, but what is the true cost to the environment? I think everyone understands that fossil fuels are not going to last forever, ethanol may prove to be the bridge to a more robust solution. So next time you pump it into the tank, think about all of the birds and bunny wabbits your saving. Dude, you bought a Jeep, not a Prius, as they say, drive it like you stole it.
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Old 08-29-2013, 08:56 AM   #977
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Ethanol is not so much about the environment as it is about the corn lobby As with any government regulation/mandate, follow the money.
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Old 08-29-2013, 09:52 AM   #978
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Corn based Ethanol is NOT green - period, full stop, end of story. However, for those what want an explanation look at how corn is grown. Hint: LOTS of petrochemicals for fertilizers and pesticides. Ask folks who cannot drink the water after it rains on their corn field of folks down near the mouth the Mississippi who contend with about a 2 mile and growing "death blossom" in the Gulf from all the run off how "green" they think corn based Ethanol is.

Sugar Cane based Ethanol is a better AND cheaper fuel - shame it's not politically correct enough to be used.
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Old 08-29-2013, 10:02 AM   #979
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I've owned both a 08JKU and now a 13 JKU. I've averaged 17.5 to 21 mpg in each of them for the last 5 yrs in all kinds of driving conditions. That includes long 4x4 road trips in snow.

And I own a small gas station and it's true...corn ethanol is a scam.
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Old 08-29-2013, 11:10 AM   #980
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Not sure about my exact MPG but I know my JK is ubber Eco friendly cause it runs on 100% recycled dinosaurs. Burn Baby, Burn!

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Old 08-29-2013, 12:18 PM   #981
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Keep in mind that if you are going by the EVIC you are probably wrong. Every time I fill up I calculate the mileage manually and compare it with the EVIC. The EVIC is constantly between .4 -1 mpg higher than my manual calculation.

This was my experience and YMMV.
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Old 08-29-2013, 08:53 PM   #982
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2004 TJL..... 19.3 overall everyday!!!! 4.0 auto.
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Old 08-29-2013, 10:14 PM   #983
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2012 Wrangler, 35" duratracs, 2 1/2" lift. 21 with top/doors off. 19 doors off top on. 18.6 with doors and top on Around Killeen and Ft Hood area.
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Old 08-30-2013, 04:44 PM   #984
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'12 JKR, GY MTR 35's, TF 2.5 lift, RK CA's TB's DLF, PS skids, paramount bumpers, Engo winch and 4.88 gears. Gets about 14 mpg all day every day no matter top/door on or off.
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Old 08-30-2013, 07:02 PM   #985
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I have jk sport and still haven't broke 18 yet. Just drove from nor cal to so cal then Vegas and back. I have about 2500 miles. Not impressed yet,but it sure is fun to drive....
"Fun to drive...." typically does not equate with fabulous mileage! Just sayin'!! I had a Prius for five years as I was making frequent road trips from western MT to eastern MN, 2600 miles round-trip, and mileage became a big deal to me. Now I usually fly when I go (son, DIL and granddaughter live there) but will occasionally drive, although it's not as much fun anymore since the Bakken oil boom in eastern MT and western ND. Anyway, the Prius got great mileage, was quite comfortable, a very reliable, functional car, but was not "fun to drive". The JKUR is fun when I get into it, and okay when I keep the little ECO light lit!
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Old 08-31-2013, 02:36 AM   #986
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"Fun to drive...." typically does not equate with fabulous mileage! Just sayin'!! I had a Prius for five years as I was making frequent road trips from western MT to eastern MN, 2600 miles round-trip, and mileage became a big deal to me. Now I usually fly when I go (son, DIL and granddaughter live there) but will occasionally drive, although it's not as much fun anymore since the Bakken oil boom in eastern MT and western ND. Anyway, the Prius got great mileage, was quite comfortable, a very reliable, functional car, but was not "fun to drive". The JKUR is fun when I get into it, and okay when I keep the little ECO light lit!
All I'm sayin!! Is I took a long road trip and thought my mileage would be a little better. I knew it wasn't going to get Prius mileage but it wasn't as good as others were getting. That being said it is fun to drive.
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Old 09-10-2013, 07:27 AM   #987
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This is my fuel app. Since changing my last spark plugs on the 12th, mileage is up over 21 mpg average city / hwy.
Hey what app? Also I have a Jku 13 sports s manual, 21.5mpg combined according to mpg computer on the dash
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Old 09-10-2013, 08:27 AM   #988
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Old 09-10-2013, 09:44 AM   #989
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All I'm sayin!! Is I took a long road trip and thought my mileage would be a little better. I knew it wasn't going to get Prius mileage but it wasn't as good as others were getting. That being said it is fun to drive.
I hear ya! After driving a Prius for 6 years, where 40mpg is sucky mileage, even in the winter, and 45-50 is closer to standard, a Jeep is a little shocking. Fortunately for me, I also had a Tundra for the past two years which I drove quite a bit, and Wrangler mileage seems pretty good compared to that!

I have to say that I'm a little skeptical of claims of 20+mpg out of a Pentastar/Wrangler combo in city/around-town driving. I don't think that's possible, no matter how careful you are.
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Old 09-10-2013, 08:02 PM   #990
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I have never had more than 19 I'm town and that was a pain to achieve.

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