So I'm drinking my coffee and perusing the Stock JK Tech page and come across a discussion on mileage. Most guys on the Modified Tech page don't care or give it a second thought (including me) to mileage. We just fill up, grumble, hop in, and chirp our 35s, 37s or 40s as we rip out of the gas station. I think we'd all not particularly mind better gas mileage.....I know I would. I love a challenge, and I have a clean slate to start with in my new 2012 JKU (if the performance shop ever finishes with it and it gets delivered so I can actually drive it) so I think I'm going to try to see how many miles I can get on one 22 gallon tank of gas. I don't want to shoot for average MPG because wheeling, snowy days on I-70, loud music-lead foot, will probably kill that, but I want to see who of us can get the most miles out of one tank of gas.

My Jeep stock is 3.73 Auto which at 70 MPH should run about 1,892 RPM on stock tires. After mods it'll be 5.13 on 37s Auto which should run 2,251 RPM. Sticker says 20mpg, so another 359 RPM at 70 mph will bleed a little mileage, rolling restistance, throw on the massive weight difference in tires, armor, bumpers, axle reinforcements, blah, blah and would 18mpg be impossible???

If anyone want's to track theirs, I saw this site site, fuelly.com on the other board.

Before anyone goes on a tirade about my post about hypermiling....realize I'm partially poking fun at the absurdity of trying it in a rolling brick. Since it's absurd and stupid, it interests me. I like to try the inane and pointless sometimes because it amuses me.

 

I have 5:13's and 35's. I can push 300 miles on one tank. My JKU is a 2007 4 door. But thats w/the 91 tune on the superchip.

 

I try to plaid-mile my JK when I'm not pissed off at driving with idiots. I've got an 09 JKU Rubi with 3" TF lift, stock tires, Airaid CAI and Superchips set to 89 tune. When I can keep myself below 65 I've done road trips where I routinely get over 400 miles per tank (best mileage I've measured so far was 23mpg on a trip to Aspen last year. Usual road trip mileage is around 21, and my average for daily driving (solid mix of highway, city street, mild-to-wild offroad, and usually at least one dunk of my boat a week) is around 18.5-19mpg and I get around 330-360miles per tank.

I'm actually really interested to hear how the 2012 does. I've tested a couple and am on the fence. The bump in power would be nice when I tow the boat, but just not sure the update is worth it now...besides, still waiting for them to tempt me with a diesel

 

300 is pretty damn impressive. 3.73's & 33's gets me just under 200 regardless of which tune I use. All highway may get me to 300 but that's a long shot. Even the Mileage XS shows me no gains in MPG's

 

My 08 2dr x with the six speed and 35s with 3.73 gears can get about 250 a tank. But if I really baby it. Then I can get better. But its no fun to baby it.

 

3.73, Silent Armor 255-75-17, auto, Bumper, Winch, Rear Bumper, Heavier River Raider Skids, My fat but... Highway I can get 390-410 out of a tank. City 330-350 usually...
Just my 2 cents

 

I hear you on that lol. i get better mileage in the city

 

Nothing wrong with "Hypermiling" just to see.

But the couple times I got curious and tried it, I forgot to baby it before getting through half the tank. Oops.

Then said screw it, it's only money.

I drive few highway miles, the MPG number would never be impressive anyway.

 

Me too! I've never been able to get good mileage on the freeway.

 

Am I reading this right???