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Old 02-21-2011, 01:20 AM   #1
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Wrangler Unlimited: MPG?

Just wondering what kind of average MPG to expect on a stock Wrangler Unlimited (Sahara if it makes a difference - but I don’t believe it does). Jeep.com says 15 city and 19 hwy but we all know how accurate manufacturer fuel economy ratings are.

Thanks guys.

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Old 02-21-2011, 01:30 AM   #2
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Old 02-21-2011, 03:30 AM   #3
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For the Sahara, that's about right. (It has street tires.) Upgrading to a Rubicon (with mud tires) will drop it.
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Old 02-21-2011, 05:24 AM   #4
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In my 08 Rubicon I get about 16 around town. Haven't been on any trips since I got it so can't tell you for the highway sorry.
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Old 02-21-2011, 08:39 AM   #5
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On my stock Sahara 08 JK (auto 3.73), in the 2000 miles I've put on it, tankful averages have been between a tick under 17 with mostly city, to just under 24 mostly freeway. I'm quite pleased with those numbers. Don't know the JKU numbers to report.
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Old 02-21-2011, 08:43 AM   #6
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Our '07 stock Rubicon gets 20mpg on the highway.... Hubby has put about 5000 highway miles on it since June. Oh, but ours is a 2Dr.
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Old 02-21-2011, 08:55 AM   #7
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It depends on several factors that contribute to weight and rolling resistance on the Jeep. If the model your looking at has street tires aka non aggressive treads, then those numbers will most likely average around mid to high 17s in the city possibly and closer to 20-21 or greater on the hwy. If you have a soft top instead of a hard top, the MPG will be increased from less weight. If you have alloy wheels instead of steel wheels, you can get better mileage as well with street, AT, or MT tires. Last but not least, your MPG will benefit more from a manual tranny and light foot.

My 2010 JK 2 door manual tranny with soft top + 17" alloy + mud terrains gets mid 17s in city and 19-20 on the interstate. I have the lightest possible set up though with all things (i.e. soft top, two door, alloys) to run Mud terrains and still get good MPG as a daily driver. Hope this helps -
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Old 02-21-2011, 10:42 AM   #8
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I have an 09 4dr JK and get around 12 in the city and 15 on the highway with 33" mud tires...
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Old 02-21-2011, 10:51 AM   #9
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I never even look bc i dont pay for gas :-)...but when i do its ussally around 16mpg...... 11' jku
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Old 02-21-2011, 11:37 AM   #10
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JK Rubicon. By the time you put on the good stuff, you will be smiling if you get 15mpg - highway / city - does not matter....you are just glad it is not at 11mpg.....
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Old 02-21-2011, 12:47 PM   #11
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I have an 08 Sahara unlimited with about 30K on it now and I drive it on the highway with cruise control mostly. Cruise control will give me better mileage @ 70mph than if it was just my foot on the gas pedal.

If I'm on I-5 (California) everybody else is going 75-80 or better and that will kick the mileage down as opposed to going 65-70. So my point is if you drive on the highway with cruise control you will get better mileage.

When your in town or off cruise all bets are off. It's according to how heavy your boots are!
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Old 02-21-2011, 12:53 PM   #12
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im sure you have all heard of the show TOP GEAR and if not i hope you go watch the english version on youtube it is an unreal show....anyway they tested the whole cruise control theory out and it acctually lowers MPG's by a little bc the throttle is being pressed more using a little more gas......i love that showwww
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Old 02-21-2011, 01:12 PM   #13
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2010 unlimited rubicon with automatic and soft top. everything is stock with the exception being a superchips flashpaq. I now have 6000 miles and an running 17-19 mpg.
I also noticed a fairly significant gain in mpg with shell gas vs whatever was cheap.
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Old 02-21-2011, 01:19 PM   #14
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I must be doing something wrong seeing some of you getting 17+. I have a stock 11 Sahara Unlimited and have never seen above 13.5 (on a good tank!) around town. I am rarely on the highway since I bought it in December, so I can't speak for that just yet. All I know is my wife gets better mileage in her Tahoe LT!
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Old 02-21-2011, 01:42 PM   #15
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'11 Rubicon Unlimited and I am averaging 16.5 - 17.3 city driving. 6spd manual, and it all depends on shift points. Generally, I shift 2-5th gears at 2,500rpm, 1st generally around 3,000. If I run all my shifts up through 3,000 it drops down to 16 - 16.5 mpg.
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Old 02-21-2011, 01:51 PM   #16
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Cool

2010 JK 2 dr, soft top, stock 16" 225/70R16 (i think) I get about 16city, up to 19 highway, 6 speed. Only have 1500miles so maybe those numbers will go up. I go at about average or slightly above speeds.
I run most of my shifts up to 3000/3500 rpms.
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Old 02-21-2011, 02:01 PM   #17
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I must be doing something wrong seeing some of you getting 17+. I have a stock 11 Sahara Unlimited and have never seen above 13.5 (on a good tank!) around town. I am rarely on the highway since I bought it in December, so I can't speak for that just yet. All I know is my wife gets better mileage in her Tahoe LT!
It could be how you drive affecting the mileage. How far do you press the accelerator down when you start from a dead stop? That has a direct impact on mileage...if you press it down in between changing gears or just give it a little gas will make a difference in mileage.
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Old 02-21-2011, 02:02 PM   #18
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I have a 2011 jku rubicon. City I get 12 mph and highway I get maybe 15 mph. Just empty every pocket is correct! My 08 jk rubi got what manufacture stated though. Oh well !
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Old 02-21-2011, 02:18 PM   #19
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It could be how you drive affecting the mileage. How far do you press the accelerator down when you start from a dead stop? That has a direct impact on mileage...if you press it down in between changing gears or just give it a little gas will make a difference in mileage.
Ill take any advice I can get on how to increase mileage. I do think I am pretty conservative on how I accelerate though. My wife criticizes me that I drive too slow!
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Old 02-21-2011, 03:07 PM   #20
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I'm getting 19+. Have not quite gotten to 20 yet.
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Old 02-21-2011, 03:26 PM   #21
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The GC gets 28 mpg with its new VM V6 diesel engine, may be soon it will come to the states.
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Old 02-21-2011, 05:00 PM   #22
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Ill take any advice I can get on how to increase mileage. I do think I am pretty conservative on how I accelerate though. My wife criticizes me that I drive too slow!
Man, I don't know. Did you buy it new? If so, I have heard people say that based on how you break in a new engine can affect performance and gas mileage...if it's not getting good air that can close it down too and cause it to get bad mileage...if it were me I would check the air filter, and run a can of sea foam in the gas tank (that stuff is awesome as it will remove any moisture in the tank and lines, and remove the ethynol build up on the valves and end of the fuel hoses, as well clean out the injectors). My 05 sport was running a little rough until I ran sea foam through it...that and a fresh tank of gas... If it were an older car I would say take it out on the interstate and floor it to blow the sut out of it, but I don't think newer cars have that issue.
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Old 02-21-2011, 07:14 PM   #23
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im sure you have all heard of the show TOP GEAR and if not i hope you go watch the english version on youtube it is an unreal show....anyway they tested the whole cruise control theory out and it acctually lowers MPG's by a little bc the throttle is being pressed more using a little more gas......i love that showwww
Best car show ever
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Old 02-21-2011, 08:21 PM   #24
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In my 2011 JKU i have been getting about 13.7 mpg according to the on board computer, 90% of my driving is city. Considering i have a light foot, i don't think i'm getting the mileage that i should be.
On my next fill up going to keep track of the miles and do the numbers myself. Also does everyone use regular gas in their JK's or do some of you use premium / super? and why?
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Old 02-21-2011, 08:27 PM   #25
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I have been getting around 17 mpgs around town in my 2011 JKU and 23 or so on highway trips. I drive pretty heavy footed but try to and enjoy seeing the eco light on.
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Old 02-21-2011, 08:42 PM   #26
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In my 2011 JKU i have been getting about 13.7 mpg according to the on board computer, 90% of my driving is city. Considering i have a light foot, i don't think i'm getting the mileage that i should be.
On my next fill up going to keep track of the miles and do the numbers myself. Also does everyone use regular gas in their JK's or do some of you use premium / super? and why?
Have you ever reset your ECO reading after filling up? You can do this by simply holding the button down on your dashboard that is used to cycle through the different readings. Select ECO and then hold it down until the reading disappears. It takes about 10 miles of driving for it to average out and give you a more correct reading. It is NOT 100% however but you can get your true MPG by miles driven/gallons used.
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Old 02-21-2011, 08:51 PM   #27
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2011 JKU Rubi auto here with just over 2500 miles. Averaging 17mpg, up to 20mpg on long highway drives. Mostly drive 50 mph max on the way to work with a few stops and I do reset the ECO reading at every fill-up of reg unleaded. No real mods yet, but when I start adding bumpers, a winch, etc... I'll be tracking the mileage to see how much it changes.
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Old 02-21-2011, 08:52 PM   #28
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Have you ever reset your ECO reading after filling up? You can do this by simply holding the button down on your dashboard that is used to cycle through the different readings. Select ECO and then hold it down until the reading disappears. It takes about 10 miles of driving for it to average out and give you a more correct reading. It is NOT 100% however but you can get your true MPG by miles driven/gallons used.
I haven't done that but will do it on my next fill up and also keep track of it myself, just to see if there's a huge difference between the 2 readings. Thanks for the info on how to reset it.
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Old 02-21-2011, 09:20 PM   #29
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just filled up today : 198.6 miles and 11.06 gallons.

198.6/11.06=17.9566

Not so good....yet I made 2 trips towing a utility trailer with riding mower, and 2 loops on a couple of very hilly logging roads....so I shouldn't be too disappointed.

Tip on the readout mileage: you do have to reset it/clear out the old running average or it will confound the average in the readout. I'm not sure how long the average accumulates, but on other Dodge unit in my pickup if you don't reset it through thousands of miles, that's the average over that period, and that manual describes at some length how to use it. The Jeep manual seems fairly mum on it but I will recheck that soon as a little spare time comes up. I haven't established complete confidence in my own read out, but it does help as a useful indicator when I want to spot check.
The couple times I did check it after a specific highway trip, it was within .1 of actual measured miles/gallons.
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Old 02-21-2011, 10:21 PM   #30
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The GC gets 28 mpg with its new VM V6 diesel engine, may be soon it will come to the states.
Up date.... engine wt 507 lb
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