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Old 02-24-2013, 08:07 AM   #1
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GPM Boost

Is there anything I can do to improve my gas mileage? It seems to be really really bad.

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Old 02-24-2013, 08:11 AM   #2
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Not much, you are driving a brick down the road. Change all fluids and spark plugs can sometimes help. How many mpg are you getting? Do you have a lift, big tires, etc...? I get right around 14 to 15 mpg...that's pretty normal.

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Old 02-24-2013, 08:20 AM   #3
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Take the money you would use to buy the MPG devices that claim to and buy gas.
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Old 02-24-2013, 08:57 AM   #4
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I'm currently running stock tires and no lift. I'm not sure on the mpg but it's looking like I'll get around 50 miles to a 1/4 tank in the city.
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Old 02-24-2013, 08:58 AM   #5
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Yah, just do standard tune up stuff like plugs, etc, air filter, and keep the lead foot off the skinny pedal

Keep in mind winter blend gas is not the best, if you are in a cold climate.
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Old 02-24-2013, 09:09 AM   #6
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I'm currently running stock tires and no lift. I'm not sure on the mpg but it's looking like I'll get around 50 miles to a 1/4 tank in the city.
you may have to drive a bit further to get a better idea of the avg mpg. And you definitely can't just go by with what the gas gauge says, it's not very accurate.

When you did the math, how many mpg are you actually getting when you fill up? miles driven divided by how many gallons you put in.
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Old 02-24-2013, 09:29 AM   #7
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Originally Posted by rmiracle View Post
Is there anything I can do to improve my gas mileage? It seems to be really really bad.
Just offering some help.
Rule 1: Please use the search function first
Rule 2: Don't complain about mpg's while driving a cube.
Rule 3: Don't ask about "the wave"
Rule 4: Just drive it and have fun...oh yeah, wave!
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Old 02-24-2013, 09:37 AM   #8
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Define bad?

If you are getting 15 mpg and you hate that then sell it.

If you are getting 10 mpg then you have a problem that needs to be fixed.

If you are getting 14.5 than check the air in your tires etc..

Above all else, don't have a lead foot.
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Old 02-24-2013, 09:40 AM   #9
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I'm probably just used to driving my wifes mazda that gets outstanding gas mileage.
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Old 02-24-2013, 10:08 AM   #10
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I'm probably just used to driving my wifes mazda that gets outstanding gas mileage.
try going from a geo to jeep.
honestly, change plugs, air filter, oil, and O2's. I battled bad mileage for a couple tanks, bit the bullet and did the sensors.
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Old 02-24-2013, 10:18 AM   #11
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Originally Posted by Shark_13 View Post
Yah, just do standard tune up stuff like plugs, etc, air filter, and keep the lead foot off the skinny pedal

Keep in mind winter blend gas is not the best, if you are in a cold climate.
X2

Also, maybe changing out your o2 sensors "may" help as well. I've just changed all 4 of mine with NTK's as part of my maintenance as they never been changed. Plugs are new from day one of owning my jeep last summer. At first it seemed ok for milage but as winter set in, winter gas blends will be your achilles heel depending on location of course. Besides if your still getting under 4$ a gallon, be lucky. I pay around 5$ a gallon or 1.31$ a liter in my corner... Im sure in Europe they pay even more then I...

As they say, dont like it? Get a prius!!!
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Old 02-24-2013, 11:31 AM   #12
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Fill the gas tank.
Note the odometer reading.
Drive it til the gauge is on E
Fill the tank.
Note how many miles you drove and how many gallons you had to put in to fill the tank.
Divide the number of gallons into the number of miles you drove.
Now you have the accurate MPG. Well almost.

Do this ten times and average it out.

If you do not know how to average it out let us know and we will help you. It's obvious you do not know how to calculate MPG.
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Retired my 94 YJ 4cyl 5spd @ 200K
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Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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Old 02-24-2013, 04:22 PM   #13
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Folks, lets be clear, unless the thing is getting poor mpg for a jeep doing that maintenance will do nothing.

First, get a baseline. If its in range, than that is what it is.
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Old 02-24-2013, 05:13 PM   #14
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has the speedometer been calibrated for axle and tire size?
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Old 02-24-2013, 09:19 PM   #15
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has the speedometer been calibrated for axle and tire size?
Sounds like he is all stock so no recalibration should be needed. We have no idea what he thinks is poor fuel economy.

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Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.
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