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Old 04-26-2013, 11:34 AM   #1
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Anyone getting close to 21MPG on the highway as Jeep claims?

I have a 2013 Rubicon Unlimited and I'm not getting close to this. I live in the Bay Are in Northern Ca. I drive with cruise control on around 65mph and I average 14.5. The Jeep is stock.

http://www.jeep.com/hostc/vsmc/vehic...Code=CUJ201306

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Old 04-26-2013, 11:49 AM   #2
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yep. 21.7 as of this morning with about 220 on the trip meter this tank. I drive from 7600 feet to about 5000 feet & back daily. 56 mile round trip +/-

Usually around 70 mph or so on the freeway, 35-50 mph on the mountain for 10 miles or so

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Old 04-26-2013, 11:49 AM   #3
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i got a 2012 4dr w/ 3.21 gears. I only hit 21mpg once or twice on my stock 16 steelies/29 tires. i'm at 19+ with 33's.
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Old 04-26-2013, 11:54 AM   #4
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In my 2009 2dr, if I don't drive it like I stole it and stay at or under 65 MPH on the highway, I can get 20 MPG from a tank. That's roughly 75/25 hwy/city.
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Old 04-26-2013, 11:57 AM   #5
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Quote:
Originally Posted by reddragons View Post
I have a 2013 Rubicon Unlimited and I'm not getting close to this. I live in the Bay Are in Northern Ca. I drive with cruise control on around 65mph and I average 14.5. The Jeep is stock.

Jeep - Compare Vehicle and Model Specifications - Highlights

I have the 4.10 and track it with a app. The best ive got is 16.2. keep in mind the rating on the sticker is model wide, not model specific. So a sport with the 3.21 could see this but you will never see this with a rubi.

I also found the evic MPG to not even be close. After the last wheeling trip mine said 13.7. I filled up as soon as we were done. drove a full tank and evic then said 17.2. doing the math for that tank i got 15.5 mpg. so tell me how I could go from 13.7 to 17.2.. I have never reset the evic MPG since I bought the jeep.
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Old 04-26-2013, 11:57 AM   #6
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We took at drive out to Rausch this past weekend, 200 mile drive. I averaged 19.20mpg and I'm in a 2door Rubicon with 4.1, 35" Duratracs and 2" lift. My everyday driving is a mix of highway/city and I only get 15mpg.
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Old 04-26-2013, 12:01 PM   #7
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Keep in mind that the MPG numbers Jeep claims is likely based on a base model with 3.21 gears and the base 16" wheels.

However the first few months I had my JK Unlimited Sahara w/ 3.73 gears, I could regularly get 20MPG on the highway and 18 mixed. Now with mods and heavy tires I get more like 17 highway and oddly 16 city.
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Old 04-26-2013, 12:02 PM   #8
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I have a '12 JK manual -- If I just drive to work and back (all highway; 36 miles each way) I will almost always get at least 20/21mpg... As soon as I start driving back roads and hitting lights it goes down to around 17/18mpg...

Also dont go off your cluster gauge, thats not accurate at all.
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Old 04-26-2013, 12:07 PM   #9
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'13 JKU (3.73, auto, 285/70/17): 20.3 as of this morning. This jeep does lots of highway driving and I'm veeerrry light on the gas pedal.

'13 JK (3.73, stick, 255/75/17): 21.4 as of this morning. This jeep does almost all city driving.
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Old 04-26-2013, 12:07 PM   #10
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I have a 13 JKU Sahara- 3.21 gears.. averaged 21.5 from SC to DC and Back.. Mainly highway and some stopping in traffic. The math was spot on with my hand calcs as well..

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Old 04-26-2013, 12:14 PM   #11
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^^ ditto on the math vs. EVIC as long as you do not reset in the middle of the tank without compensating in the calc.
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Old 04-26-2013, 12:16 PM   #12
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Stock 2012 JKR with 3.73 gears and 32's. I see 20+ on occasion when I stick to secondary roads and keep the speed consistent around 55MPH. Beyond that, roughly 19MPG at 70MPH.
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Old 04-26-2013, 12:19 PM   #13
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'13 JKU Sport S with 3.73 and hard top. I only have 2k miles and 1 highway trip. On that trip I had saw 20 round trip up and down PA mountains. I am seeing 17 around town.
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Old 04-26-2013, 12:19 PM   #14
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Thanks for the clarification. I'm taking my first big trip in a month and will have to see what I get in the mountains.
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Old 04-26-2013, 12:43 PM   #15
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'12 JK Sport, 3.8 VVT, 6 spd man, 3.21, 255/75/17 Wranglers (soon to be 285/70/17 Dura's)

At 2000 miles 16.5, at 6200 miles 18.5 average. Mid-grade fuel. Have hit 21 on highway only driving. I do notice the better the gas, the better the mileage, have not calculated the cost benefit of premium fuel.
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Old 04-26-2013, 12:48 PM   #16
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Not even close... Then again I have a 3" lift heavy bumper and larger tires... Even when she was stock (for about a week) I never saw over 16MPG. I have a '13 JK auto 3.73 gears.
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Old 04-26-2013, 12:50 PM   #17
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Quote:
Originally Posted by reddragons View Post
I have a 2013 Rubicon Unlimited and I'm not getting close to this. I live in the Bay Are in Northern Ca. I drive with cruise control on around 65mph and I average 14.5. The Jeep is stock.

Jeep - Compare Vehicle and Model Specifications - Highlights
yup. I got 16 so that's closer to 21 than it is to 1.
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Old 04-26-2013, 01:22 PM   #18
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pfft...you guys and your penstars...i have the crappy 3.8 and on the same trip as Matador, i got about 22 mpg and i have the 4 door...o and i have the crappy 3.21 gears and a 2" lift with 35's....maybe it was because i have the manual transmission...
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Old 04-26-2013, 01:32 PM   #19
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4 door, 3.6, manual, 3.73, BFG MT.

I get over 20 if highway driving. I have noticed mileage gets worse if going more than 70 or using the cruise control.
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Old 04-26-2013, 01:41 PM   #20
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My 2012 2 door JK S Package with 3.21 with 12000 miles on it gets 22.5-23.9 according to the LOM rite now... a few months ago on winter fuel it was getting more like 19.5-20.5.

I am selling it and have a Rubi on order... I am wondering what the milage change will be between the two... 4.10's vs 3.21's...
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Old 04-26-2013, 01:42 PM   #21
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On my stock 2012 JKU Sahara w/ 32" tires (not sure on the gear ratio), I average around 19 with my commute. If I don't go out for lunch, I can usually get it around 19.5-19.9. I travel 70 miles RT each workday, and over 95% of that is on the freeway.
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Old 04-26-2013, 01:43 PM   #22
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I'm sure he meant 12... Damn them fat fingers..
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Old 04-26-2013, 01:47 PM   #23
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2010 stock sport 2 dr, and i average around 20-21 mpg most days during the week. hot dogging it around in the boonies on weekends i get less, but them im driving aggressively so i wouldn't expect it to sip gas.

Ive also noticed when i take the top down, mpg at highway speeds suffers; all the extra air drag i guess. below 55 the top up or down doesn't matter.
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Old 04-26-2013, 02:34 PM   #24
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To the OP.. How new is your jeep? I got terrible mileage, around 14mpg, when it was brand new. I'm now at 2400 miles and getting the over 20mpg reading.
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Old 04-26-2013, 02:36 PM   #25
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21 mpg in my Jeep 16 on a good day! Having said that its still an awesome vehicle and my favorite to drive hands down!
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Old 04-26-2013, 02:40 PM   #26
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I'm at 17.9 average 2011 stock (hopefully not for much longer) 4 door and I am happy as hell I thought it was going to be closer to 13-14. My old TJ with 33's was around 10.
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Old 04-26-2013, 02:48 PM   #27
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2013 Sahara 2 dr. auto 3.73s.. I have seen tank avarages around 20.4
I do a mix of 10-20 mile highway runs and what i'd call back roads..not really much "city" driving. I do about 500 miles/ week.
i have no lift, running Grabber AT2s 275/65-18 same diameter as stock , more tread and about 2# heavier / tire.
I will same that the harder of faster i push..75-80 i see a drop. Thats just aerodynamics.
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Old 04-26-2013, 02:53 PM   #28
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My 2013 JKU with Stock 17" wheels, 32's and 3.21 gearing gets about 16 around town and I had it almost to 20 on a trip to NV. I usually set the cruise just a hair of 65mph.
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Old 04-26-2013, 02:55 PM   #29
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Quote:
Originally Posted by termite View Post
Keep in mind that the MPG numbers Jeep claims is likely based on a base model with 3.21 gears and the base 16" wheels.
And in perfect situation with high quality gas, not the corn substitutes.

I'm averaging 17.5 mixed on 3.73 auto, no mod that can affect gas mileage. I guess I don't belong to this thread
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Old 04-26-2013, 03:02 PM   #30
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Can one of you guys teach me the art mpg? Can't crack 18 driving as I do on 99% highway drives

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