steves07jk

I am with most of you guys I have a 2dr with 5.13s 35 bfg mt2s and average about 210 to 230 a tank.

GCM 2

I just drove from Phoenix, AZ to Colorado Springs, CO over the Christmas holidays, about 1900 miles round trip. The terrain is pretty damn mountainous, 4 door, stock motor (flashpaq'd), I'm running 1 ton Dana 60's, 40" Goodyear MTR's, 5.38:1 gears, heavy Walker Evans beadlocks, loaded down with two adults and a metric shit ton of christmas presents, over drive turned off 99.9% of the drive and I was pulling 290+ miles per tank on winter gas. I must have the one golden 3.8L produced.

fray

As someone else mentioned, this sounds like a case of Winter gas to me.

In many areas of the country they are required to do an E10 blend in the winter, but are allowed to sell pure gasoline in the summer. (Unfortunately here in MN, it's E10 all year round...) That takes roughly 2-3 MPG from all of my car at least. My TJ's 4.0 it wasn't really felt. (Still waiting for my JK for comparison...)

JayhawkJeep

Just to clarify YOU CANNOT COMPARE A 2DR AND A 4DR. The 2DR's tank is smaller thus you will get less millage per tank even if the 4DR weights a little more.

Four Low

Ethanol knocks down the mileage ,I'm getting 4mpg less than the "Summer" mix,there seems to be more ethanol in the fuel,doesn't even smell like gas. Wait 'till it "officially" goes to 15% ethanol.I think it is already,testing it out on us to see if we notice.

GCM 2

Okay, then I will put it this way- I achieved 13.7 MPG over the entire 1900 mile journey.
Not sure what tank size is on the 2dr.

Edit: so I checked tank sizes 2dr (18.5gal) vs. 4dr (21.5gal). Which means I am, oddly enough, still getting better mileage.

Jeepetc

I have a 2009 4 dr. It has a 22.5 gallon tank according to specs. When the fuel light comes on I typically have used 18 gallons (based on putting 18 gallons back to fill up). I have gotten 218 and 212 miles on the first two tanks when the light goes on since I have owned it.

Switched to 87 octane and hope to do a little better.

Blues 2

I don't know if he is a 2 door or wagon, but my wagon gets poor mileage in the winter too, about 2 less around 12 mpg or so.

Bone stock, rubiwagon-auto.

I've never been impressed with this brick's mileage.

Good thing it'll be paid for by the time gas gets crazy expensive (summer 08 prices) cause I'll just replace the payment book with gas prices.

It's still the coolest thing I've ever driven.

Jeepetc

Just finished a tank with the 87 octane setting. Got slightly better mileage and got to 338 miles before fuel light. Even included a few 4WD miles. Averaging just over 13 MPG.

jenly8

I never get more than 200 miles with 35" tires and 5.13 gears