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Discussion Starter #1
For those of you who are lucky enough to already be driving your 2012s, what kind of mileage have you been getting? Mind posting some info to help out a prospective buyer?

Specifically, I'd love to hear the following:

1. What are your wrangler specs? (rubi/sahara/sport, 2/4 door, 3.23/3.73/4.10 gearing)
2. How did you drive it this tank? (still in break in, city/highway breakdown, conservatively or like a bat-outta-hell)
3. What number fill up is this? How many total mikes so far?

I think this would be valuable info for potential buyers and also for comparison between current owners. For reference, I'll be ordering an unlimited rubi on Monday, but am still torn on the 3.73 v. 4.10 question.

Thanks - you guys rock!
 

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2012 JKU Rubi 4.10
16.8 mpg from LA to Sacramento bat out of hell
500 miles on it.

I expect it to get better after it loosens up and I stop playing in the fast lane. It really is nice being able to accelerate from 70mh to 85mph with ease.

Get the the 4.10 if your getting the auto. the difference in gas mileage is miniscle. You get better gas mileage by loseing weight!
 

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Discussion Starter #3
Provelogear said:
2012 JKU Rubi 4.10
16.8 mpg from LA to Sacramento bat out of hell
500 miles on it.

I expect it to get better after it loosens up and I stop playing in the fast lane. It really is nice being able to accelerate from 70mh to 85mph with ease.

Get the the 4.10 if your getting the auto. the difference in gas mileage is miniscle. You get better gas mileage by loseing weight!
Thanks for the info - sounds like you're not as scared of the CA Highway Patrol as I am! I am planning on getting auto, by the way.
 

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I just want to report that my 2012 Rubicon Unlimited w/ 4.10 gears used up it's first tank of gas...first tank of gas yielded 314 miles, it was very uneven driving and in the engine break in phase.... How is everybody else with the Unlimiteds and 4.10's set doing?

So far it looks good..
 

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2012 JKU 3.73 Auto-
22.4mpg highway w/300-400mi on the clock cruise set @ 72mph as much as possible on a 80 mile treck up and down I-79 in PA...
17.6mpg city w/0-200mi on the clock...

Both via the Innovate Motorsports OT-2 can bus logging interface Innovate Motorsports OT-2 -
 

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Sounds like pretty good number so far! I'm looking at getting the 2dr Rubi w/ 4.10's, so I guess I can expect a big gain from my current ride (Tahoe Z71).
 

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2012 Sport S, 6 speed manual, 3.73 with Freedom top.

Just under 18 mpg highway.

Dropped to 16.5 in city now.

It does cruise EFFORTLESSLY on the highway @ 75 mph.

Odd feeling in a Jeep.
 

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Discussion Starter #9
NEO Jeep said:
2012 Sport S, 6 speed manual, 3.73 with Freedom top.

Just under 18 mpg highway.

Dropped to 16.5 in city now.

It does cruise EFFORTLESSLY on the highway @ 75 mph.

Odd feeling in a Jeep.
Nice - great info. Keep 'em comin, guys!
 

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Discussion Starter #11
How is the feel of the 4.10s with the auto? Does it feel like it's shifting a lot or searching for gears at lower speeds? Noticeable power difference (if you've driven both)?
 

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2012 JK Auto 3.21 gears stock tires. I do 70% highway and 30% city driving.

My average MPG has been 21.5 - 22.0 (confirmed by my math at the pump).
 

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After spending a good part of my first two days with my 3+ week old 2012 just looking at that MPG display fluctuate, I decided to turn the display to compass/temp and have NOT looked at MPG since...
 

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You should only be measuring gas mileage between fill-ups. The only real benefit to the display is to give you feedback as to how your current driving is impacting efficiency at any given moment.
 

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2012 RUBICON, 6 speed, 4:10 rear @ 500 miles on it. First fill up was about 18.0 mpg
2nd fill up was 16.1 Gallons after 292.7 miles averaging @ 18.2 mpg (dte read 41 miles and my computer mileage was 19.1). My drivingis mostly 4 lane and at speeds of 60-70 mph if I can keep it there. So much fun to drive you just want to go fast. Already doing better than my traded 2007 Sahara 6 speed w/3:21 gears and i expect it to get better.

cass
 

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2012 JK Rubi auto w/ 4.10s

Just filled up. About 850 miles on Jeep so far. Still driving like break in. Full throttle bursts, lots of city driving, and little interstate miles. Calculator showed 20.1 mpg today. I have been averaging between 18-20 mpg for all the fillups so far. I expect a wee bit better when I start driving it normally. The eco guage by the way is usually showing high 18s.
 

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439 miles total. 2nd fill-up (10.49 gals.) after 177 miles = 16.87 MPG. Country roads, town traffic, long hill, very little highway yet.

First fill yielded 15.55 MPG. Going in the right direction.

Jeep specs. in signature.
 

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12 JKU Sport, Auto, 3.21

Looks like I lead the way for lowest MPG. Im getting 14. All city. All stop & go. Still driving in break in mode. Coming up on 500 miles. I havent done the math myself yet, just going by computer. But 14 is what its reading.
 

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12 JKU Sport, Auto, 3.21

Looks like I lead the way for lowest MPG. Im getting 14. All city. All stop & go. Still driving in break in mode. Coming up on 500 miles. I havent done the math myself yet, just going by computer. But 14 is what its reading.
Have you changed your break-in driving technique? You said before that you might have been driving too 'granny-like' and lugging a bit - worst thing for MPG and break-in. I assume you're driving more 'peppy' now, and still getting just 14 MPG? Maybe, actual calculation will be better. Some say the computer readout can be pretty far off.
 
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