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Topic Review (Newest First)
08-26-2013 04:42 AM
ChaddG This is the funniest MPG thread so far!
I still love my K&N stock airbox filter. Sure it's not made for off roading, but it will pay for itself in 3 filter changes worth of miles/time

I was thinking about getting one of those metal K&N oil filters... They run about 200.00
It would take 75 oil changes for it to pay for itself. decided not to...I don't have a parts washer to get the debris out of it.

Has anybody ever tried nitrogen in their tires?....
I know the only way to truly get better gas mileage is to not drive the Jeep!
Sarge, that picture is SOOOOOO FUNNY!

I get around 15 city and 17 highway. I saw 20 mpg through 1 tank of gas once.
I almost had a heart attack. Then I went around the Jeep a few times to make sure it wasn't a prius.
<cough cough>
My mother in law bought a 2013 Jk and she is claiming 30 mpg
08-24-2013 07:24 AM
vizro don't ride to close to others you won't have to use your brakes as often which means less gas being used to get you back up to speed and longer life for your brakes.
08-23-2013 11:14 AM
Mr Mac Go buy one of these, slap it on your bumper and enjoy your Wrangler off road!

08-23-2013 11:14 AM
NJO Expect 15-20mpg tops on the highway at 55mph assuming proper gearing. If you want better gas mileage hook some recovery straps onto the back of a SEMI. Otherwise buy a Prius. Jeeps are fantastic "do it all" utility vehicles with one single drawback. They are gas pigs. No way around it.
08-23-2013 11:08 AM
pyrilampes
Quote:
Originally Posted by Dusty Rhodes View Post
Cold Air Intake, K*N, 3" exhaust with flow through muffler and resonator on the back. Performance chip, 5" wide tires aired to 50 pounds. Whale tail mounted on the rear of the hardtop. Lowered 8". Take the transfer case out and install an over-overdrive. Remove front fenders. Put a stinger on the front enclosed in fiberglass and match the angles with the hood. Rake the windshield about 60 degrees and remove the door handles and side mirrors.
I did this and got some ok additional mpgs. Then I had a vision. Next evening I saw a rainbow close by and raced to the end. The pot of gold is obviously a myth. But I caught a leprechaun, put him in a blender with a single barrel Irish whiskey. I pour about 2 tablespoons in the engine every 2 weeks and I hit about 40mpgs now.
08-23-2013 11:02 AM
MarkGLHS I get 1-2 mpg more around town with no top on as opposed to having the hard top on......however I can see better aerodynamics at highway speeds w/ the hard top on but for stop and go driving the less weight the better (ie: keep the top at home).
08-23-2013 10:40 AM
Kimi725 So is it like a reverse governor? But for power not speed?
My jeep only races itself. my go fast foot is now a just go foot lol
08-23-2013 10:40 AM
Ironhead Jed
Quote:
Originally Posted by Wrangler Maroon Marauder View Post
Ok guys calm down lol just thought I'd ask. I'm in college and taking trips home on the weekends so I thought it could be useful to see if anyone new a good way. My dad has a JK and he chipped it and put a cold air intake (2011 right before pentastar) and it improved his by 2 Mpg around town so u can't blame me for asking,
if you want to dramatically improve your mpg for long highway trips, draft a semi. not 5' from the back of one, but anything closer than 100' will have a reduction in drag and benefit in better mpg. i normally average 15 mpg but i tested this theory on a 300 mile trip and was averaging 18.5 mpg

mythbusters had an episode on it, an annoying one with all the disclaimers, but was packed with testing and data at various distances
08-23-2013 10:36 AM
Jerry Bransford
Quote:
Originally Posted by Kimi725 View Post
What is this chip you speak of? I've never heard of it, or have heard of it by another name.
A chip is a computer chip that is attached to the main engine computer to change its programming. By itself, a chip won't improve mpg. They can sometimes improve HP at high engine RPMs like if you're racing your Jeep but around town, they don't do anything.
08-23-2013 10:34 AM
Kimi725 What is this chip you speak of? I've never heard of it, or have heard of it by another name.
08-23-2013 10:32 AM
Jerry Bransford Neither a chip nor a CAI should have had any effect on the mpg, despite what their advertising claims. A 2 mpg gain is HUGE & if a little different programming of the computer or a different air intake design could have done that, the factory would have JUMPED at doing so due to the immense pressure they are under to improve their CAFE (average fuel economy of all vehicles manufactured) as required by the feds.
08-23-2013 10:27 AM
Wrangler Maroon Marauder Ok guys calm down lol just thought I'd ask. I'm in college and taking trips home on the weekends so I thought it could be useful to see if anyone new a good way. My dad has a JK and he chipped it and put a cold air intake (2011 right before pentastar) and it improved his by 2 Mpg around town so u can't blame me for asking,
08-23-2013 10:15 AM
AOR
Quote:
Originally Posted by bostiguy View Post
True! Less time idling is better overall mileage.
08-23-2013 10:02 AM
bostiguy Avoid left turns...seriously.
UPS Makes No Left Turns In Quest to Deliver Sustainability; Q&A - Bloomberg
08-23-2013 09:33 AM
AOR Change all the fluids to synthetic. Reduce heat and parasitic loss in the drivetrain. And everything else that was suggested above. Well maybe not everything.
08-23-2013 09:32 AM
Dusty Rhodes Cold Air Intake, K*N, 3" exhaust with flow through muffler and resonator on the back. Performance chip, 5" wide tires aired to 50 pounds. Whale tail mounted on the rear of the hardtop. Lowered 8". Take the transfer case out and install an over-overdrive. Remove front fenders. Put a stinger on the front enclosed in fiberglass and match the angles with the hood. Rake the windshield about 60 degrees and remove the door handles and side mirrors.
08-23-2013 08:46 AM
Kimi725 Oh my such meanness! I think it just takes some people getting used to the idea that while jeeps are awesome to look at and drive, they really aren't the most economical vehicles. I don't LIKE my mpg's but I also am used to driving a 5.4l 8 cyl ford. So the mpg's are just kinda one of those things. Would I like better certainly, but I know I am not going to get it.

I have been curious about mpg's as well but mostly out of concern that something else was wrong...there was. Maybe the OP just wasn't aware that jeeps run gas like most people change underwear.
08-23-2013 08:01 AM
SurfKaster You're about average & better than many. Stay under 65mph & I found staying out of 5th under 45 helps too. Honestly you're not going to get much more out of her.
08-23-2013 07:53 AM
Atthehop
Quote:
Originally Posted by ChaddG View Post
all of this is good info.
use mobile 1 oil
put a k*n air filter in
I got better mpg with my soft top ironically.
get road tires for your Jeep
OH NO, not another K*N advocate..........
08-23-2013 07:51 AM
Atthehop
Quote:
Originally Posted by Big Sarge View Post
.
YES, and it will never end.
08-23-2013 07:51 AM
UnlimitedLJ04 first off, keep up on maintenance obviously: good air filter, fresh fluids, rotate the tires, etc. next, make the jeep as lightweight as possible: ditch the back seat and passenger seat, remove the carpet, ditch side steps, use full soft doors & fastback top, but you can't remove those because no top hurts aerodynamics. keep everything else stock - bumpers, body panels, no extra lights, no brush guard, no winch, factory aluminum wheels, keep small 29" tires with highway tread, etc. hypermile: always take as long as possible to accelerate and always shift before 2000-2400 rpms, keep speeds under 60-62mph, coast as much as possible, try to time red lights so you don't have to come to a complete stop. never fill the gas tank more than half way to reduce the weight you're carrying around. keep your foot off the skinny pedal as much as possible.

Basically, make your Jeep as lame as possible and drive like an old lady. You might get up to 19-20mpg hwy if you're lucky.

If you don't like those answers then get a damn Prius.
08-23-2013 07:46 AM
Big Sarge .
08-23-2013 07:43 AM
ChaddG all of this is good info.
use mobile 1 oil
put a k*n air filter in
I got better mpg with my soft top ironically.
get road tires for your Jeep
08-23-2013 07:34 AM
InvictusDecretum Here's an entertaining post about stinger bumpers, airflow, and mpg
http://www.wranglerforum.com/f33/the...is-178903.html

Definitely an interesting read. Stingers look awesome either way, and I'm shopping for one right now ! Looking real hard at metalcloak.
08-23-2013 07:34 AM
Kimi725 Don't you know its a proven fact that aor fresheners will improve mpg's?
08-23-2013 07:22 AM
Jhmace9 What does an air freshener have to do with this????
08-23-2013 06:37 AM
Atthehop Your MPG is normal and the only way to improve it, to maybe 19 HWY, would to drive it really easy and not ever push it over the speed limit and on hills get into the truck lane. I drove a 100 mile RT commute for over 20 years and the best I could get was 19 MPG. Even the 18 wheelers passed me on hills. Do you have oversized tires your speedo may be off and to make an accurate you should do the following:

First thing to do is use a GPS and determine if your speedometer is accurate and if not the percentage it is off.

Now, fill the gas tank, record the odometer reading (or reset the trip odometer to Zero)

Drive the jeep until it is low, approx 1/8 tank.

Fill the tank and record the exact number of gallons it took to fill it.

Record the odometer reading and subtract the beginning mileage from it (or record the number of miles on the trip odometer)

Divide the number of miles driven by the number of gallons it took to fill it back up. DO NOT omit the tenths if there were any.

Now do this a number of times and average it out.

If your speedometer is off multiply the number of miles driven by the percentage it is off and add it to the number of miles driven before dividing by the number of gallons.
08-23-2013 02:23 AM
MarkGLHS air the tires up, drive with no top on and full doors, get all the excess stuff out of the vehicle, get a good tune up, keep the vehicle clean and waxed, and if you have a 5-speed coast as much as possible in neutral......I am seeing consistent 18-18.5 mpg using these tips in 100% stop and go driving.
08-22-2013 11:43 PM
pyrilampes Clean your intake check for bad alignment low tires get new spark plugs buy 87 octane. Check for error codes and get an air freshener
08-22-2013 11:40 PM
Jerry Bransford Slow down & air your tires up a tad. Slowing down will give a dramatic improvement in mpg.
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