Welcome to the forum. Do you have a new Jeep, or are you looking to get one?
In any case, a quick search will net you a zillion mpg threads. Here's a rough summary of what you might find, all referring to stock Unlimiteds (4 doors).
2007-2011 (3.8 engine): from 16-20 average.
2012+ (3.6 engine): from 18-22.
"I have a great ambition to die of exhaustion rather than boredom."
I have a 2013 JKU Sahara 6-speed with 3.73. I've got about 1,200 miles on it. So far in my normal driving, which is city with some country highway mixed in, I've been getting about 18.5. My wife and I took our girls on a trip to the coast yesterday (about 120 miles, mostly highway, mostly flat, but some hilly areas) and I got 20.8. I kept it between 65 and 70 for the most part.
2013 JKU Sahara, billet. 6 speed, 3.73, limited slip, leather, connectivity, max tow package, side airbags, black hard top.
Gone, but not forgotten:
1980 CJ7, 4-banger
1993 Wrangler, 4.0 I6
1998 Wrangler Sport, 4.0 I6
2013 JKRU as well with 3.73, and I had it up to 18.5 on a highway trip last weekend (~70). Around town it seems to be ~15. Stock wheels & tires.
Is this about what I should expect with the higher gearing? Just curious, I knew it wasn't going to be pretty!
That seems reasonable to me for what you are running. I have a 2012 JKUR with 33" duratracs, 4:10's and 6spd and get about 15 around town 17 hwy best tank 18.9 worst tank 12.3 (pulling utility trailer.)
800 miles so far on '13 with 3.73 gears and 6 speed. First tank was 17 mostly stop go. Second tank was 16 all stop and go. Haven't been on the highway yet. That tank with 16 it was really cold and I warmed it up after work a few times. Working on 3rd tank.
2012 auto with 3.5 lift, 4.88 gears, and all the heavy steel bumpers, tire carrier, fenders, winch, skids, etc. average with 70% highway was about 12.5. Now I have it performance tuned and am averaging 13.4 driving the same 600 miles per week average.
When "Rowdy" was stock I could get 17 and the better half could get it to 20. Now that she has her 3" lift with 35 Nitto Grapplers its all the way down to 12.6 no matter who drives it or how its driven.
Didnt buy it for MPG but wouldnt mind getting some back lol
I have a almost stock 2010 Sport S w/ 3.73 and I see anything from the high 18's to the mid 19's almost every time. I have never seen a 17 range, but came close once pulling a 5X10 trailer with a big bouncy house rental on it and seen the 20's twice when I did a good bit of highway. My average seems to be just at 19. I do a bit of mixed country driving. And I have a big ole Warn elite bumper and winch on the front.
It's hard to judge MPG by other people's experience. A lot of it is going to depend on HOW you drive and in what kind of conditions.
I range from 13-14mpg. But, I'm heavy on the gas pedal and I sit in heavy stop-and-go traffic during my commute to and from work.
Other people with the same exact Jeep may see 16-17mpg. I know if I do all highway driving on a tank, I'll be closer to 17-18mpg.
Totally agree. I drive almost entirely city and on top of that I warm my Jeep up a little with the remote start every morning and then I stop at the coffee shop, sometimes wait in line behind other cars. With all that, 14.5 mpg city for a 4 door Rubi doesn't seem so bad!