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Old 09-25-2008, 05:47 PM   #1
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tips for improving MPG?

When I got my 07 Wrangler, the window sticker showed 16 MPG city, 19 highway. The truck had 21K miles on it when I got it. I've been doing all highway driving with it, and just killed off the first full tank of gas, with a full tank being 21.5 gal. The mileage for that tank was 365.6, making the MPG 17..

Since I'm coming off of having traded a 25MPG vehicle for this (trust me it was WORTH it to get another Jeep, plus the other vehicle was ready to croak), I'm trying to get as close back to that number as possible, and wondered if anyone had any tips or tricks that have helped them along? I've heard the K and N air filters breathe better and help a little, but have not yet made any changes on mine.

Thanks!


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Old 09-25-2008, 05:54 PM   #2
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The only way to get better mileage would be to trade it off for a Smartcar or a Prius. Those of us that are getting 10 or less MPG are going to be gathering on your lawn later with lit torches.

Congrats on the high MPG! But even the new Wranglers are still basically a box with wheels. I say 17 is phenomenal!

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Old 09-25-2008, 05:55 PM   #3
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Put it in "neutral" and coast a lot. That's about all that is guaranteed to help much.
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Old 09-25-2008, 06:44 PM   #4
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yeah, 17's not too bad, I'd be happy with that. I've found that if I drive somewhere between 60-65, my mpgs get a bit higher.
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Old 09-25-2008, 07:50 PM   #5
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Loved the torch comment! I may set myself up as a guinea pig and see what improvements I can do.. if I get a better number I will share my secrets out

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Old 09-25-2008, 08:45 PM   #6
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i got a 95 w the 4cyl engine and im averaging around 20-22mpg. so 17 aint bad. its a truck...dont expect much. my civic averages 31mpg so when i drive the jeep i deff notice the difference...but its still fun as hell to drive.


(im new to the jeep game if u didnt notice)
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Old 09-25-2008, 09:43 PM   #7
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Ease off the skinny peddle... duh.
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Old 09-25-2008, 10:07 PM   #8
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Paging Tripp...

C'mon, you just KNOW he's gonna be all over this w/ all his aero advice, disconnecting half the suspension, etc...
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Old 09-26-2008, 02:02 AM   #9
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I was getting 12-13mpg's w/ my unlimited X so it went bye-bye
and now i'm getting 16-17 city and 20-21 hwy with this


...........And I can pull my race car
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Old 09-26-2008, 01:26 PM   #10
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I like the truck maybe you should post else where now.
If you were a true jeep person you would not care about the gas you would drive it any way. just my 2cents.
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Old 09-26-2008, 01:30 PM   #11
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According to my meter, I get around 18.9 - 19.2 MPG....and this is my 4th tank of gas.

I'm not sure why, but I get WAY worse gas miles on a highway than I do on back roads. I like in a country area, and the only thing I can think is that I am not always acelarating like I would on a highway. Try some back roads....
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Old 09-26-2008, 02:16 PM   #12
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bottom line...its a jeep. dont expect great gas miliage. shoulda thought bout that before you brought it. thats why i think i wanna sell mine now. my commute to work is too far.
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Old 09-27-2008, 09:41 AM   #13
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I like the truck maybe you should post else where now.
If you were a true jeep person you would not care about the gas you would drive it any way. just my 2cents.

Nah, I'm gonna hang out here with you "true jeep" people.
Just becuase I got rid of the 4 door doesn't mean I don't have
another jeep. "real jeep" people have more than one jeep. just my 2cents

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Old 09-27-2008, 10:01 AM   #14
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I've only run two tanks through mine; (475 miles on odometer today) the computed mileage for a lot of stop and go and running around the NC mountains was 15.7. After filling up and driving 28 miles home with half on an Interstate and the other half on a windy 2 lane over a 4,000' mountain, the computer is showing 18.5.

Not too shabby for a Jeep but I'm sure the 18.5 will come down as I run the rest of the tank out.

I drive conservatively, run about 65 on the super-slab, 55 on the 2 lane except where it's twisty grades and then I drop to about 35 there.

Regards,
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Old 09-27-2008, 07:59 PM   #15
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I've only run two tanks through mine; (475 miles on odometer today) the computed mileage for a lot of stop and go and running around the NC mountains was 15.7. After filling up and driving 28 miles home with half on an Interstate and the other half on a windy 2 lane over a 4,000' mountain, the computer is showing 18.5.

Not too shabby for a Jeep but I'm sure the 18.5 will come down as I run the rest of the tank out.

I drive conservatively, run about 65 on the super-slab, 55 on the 2 lane except where it's twisty grades and then I drop to about 35 there.

Regards,
Richard

Well with having about 500 miles on a new vehicle it is just about time to change the oil for the first time. I know the owner's manual says every 3000 or 3500 but you should think about all the little crap that just worked its way into your oil pan being a new engine. I always change oil on a new vehicle or a new motor after 500-1000 miles, better safe than sorry. Also after your vehicle goes thru it's "break-in" period you might see 1-2mpg better.
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Old 09-27-2008, 08:41 PM   #16
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Actually, the manual says to change the engine oil when the oil change indicator light comes on or at 6 months if it doesn't come on before that time. It also says to never exceed 6,000 miles between changes. Additionally it says "The engine oil installed in the engine at the factory is a high quality energy conserving type lubricant." It might be a good idea to leave it in there a while and let it do it's job.

IMHO, if it was supposed to be changed at 500 miles I'm confident they would have said so in the manual. It's always best to go by the manufacturers recommendations on this stuff.

Regards,
Richard
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Old 10-03-2008, 06:01 PM   #17
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I actually hit 18 MPG on my last tank! WAHHOOO!! I'll take it.
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Old 10-06-2008, 09:22 AM   #18
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Drive slower, easier acceleration from a stop, and check your tire pressure. Those are really the only ways you're going to increase your gas mileage.
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Old 10-06-2008, 09:47 AM   #19
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The JK likes to go slow and it prefers high altitude.
I get 11-13 mpg when I'm on the trails and pulling my trailer. And I've gotten as much as 27 mpg on a scenic 2-lane in the Canadian Rockies, putting along at 45 to 50 mph.
Think smooth.
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Old 10-06-2008, 06:35 PM   #20
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27???? C'mon you can't count that spike you saw when you let up off the gas and coasted downhill. I find it hard to believe ANY JK out there can record a 27.
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Old 10-07-2008, 10:47 AM   #21
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27???? C'mon you can't count that spike you saw when you let up off the gas and coasted downhill. I find it hard to believe ANY JK out there can record a 27.
full tanks of fuel (did it three times) and used GPS to correct the odometer. I never hit 27 for the tank but I hit 26.8 and 26.9 on all three tankfulls.
My overall average for the trip (7,300 miles in 2 weeks) was 20.98, including the wheeling in Colorado, Wyoming, Montana, & Canada.
With an auto-trans and 33's to boot.

Here's a short youtube I made of the trip:
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Old 10-07-2008, 06:24 PM   #22
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Make the Jeep Lighter will help. Espeacially with city driving. Not sure how heavy the stock exhaust is but you can probably shave 10 pounds going to an after market exhaust.
Tuning the vehicle might help you gain 1 mpg. There is always a little room to improve the efficiency of the engine. Cold air intake will also help with the tune as well
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Old 10-09-2008, 08:44 PM   #23
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full tanks of fuel (did it three times) and used GPS to correct the odometer. I never hit 27 for the tank but I hit 26.8 and 26.9 on all three tankfulls.
My overall average for the trip (7,300 miles in 2 weeks) was 20.98, including the wheeling in Colorado, Wyoming, Montana, & Canada.
With an auto-trans and 33's to boot.

Here's a short youtube I made of the trip:
did u seriously drive all over the country for two weeks in a jeep? god how much did u spend on gas??
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Old 10-09-2008, 08:48 PM   #24
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i have the 2.5L 4 cylinder engine...i was expecting at least 24mpg....im averaging 20-21. is that normal?
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Old 10-10-2008, 06:54 AM   #25
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did u seriously drive all over the country for two weeks in a jeep? god how much did u spend on gas??
It was 2 countries and the gas bill was $1499. I had two rebate Visa cards that totaled $350 and my $1200 gummint stimulus check. Hotels were giving great deals due to decreased tourism... ...I stayed under budget by nearly $1000 overall.

Next year we're doing it with the trailer and will camp the whole time. Not sure where we're headed; maybe Moab...





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Old 10-10-2008, 08:04 AM   #26
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.........and used GPS to correct the odometer.

Did the GPS compute the mileage traveled as line of site mileage between two points or did it use true traveled road mileage?

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Richard
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Old 10-10-2008, 09:45 AM   #27
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Did the GPS compute the mileage traveled as line of site mileage between two points or did it use true traveled road mileage?

Regards,
Richard
Actual traveled; I ran it constantly during the trip.
I'm running larger tires and my odometer reads short by 2.4%. Makes the mpg's look artificially low but makes the OBC estimate remarkably accurate...
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Old 10-10-2008, 12:13 PM   #28
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My 95 4.0 is getting 15.3....I expected much less so I am a happy jeeper!
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Old 10-10-2008, 07:04 PM   #29
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Neat. I've been looking at some of the teardrop kits.

Look into Zion/Bryce/North Rim Grand Canyon if you are out in Utah.
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Old 10-13-2008, 06:11 AM   #30
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Neat. I've been looking at some of the teardrop kits.

Look into Zion/Bryce/North Rim Grand Canyon if you are out in Utah.
Preston builds a great teardrop at a fair price. teardrop72.com :: TEARDROP TRAILERS :: emergency preparedness solutions

Plans are starting to come together for an overland expedition to Toroweap and the surrounding area. Total backcountry.
Toroweap - Tuweep

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