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Old 12-14-2012, 08:58 PM   #1
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gas economy

This may have been discussed before but I'm not computer savy so I have to ask. What do other Jeep owners do to increase fuel economy? I was thinking about installing a K&N filter to get a few more kilometres, any other ideas without breaking the bank.

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Old 12-14-2012, 09:20 PM   #2
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Really all you can do is drive slow and avoid the highway

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Old 12-14-2012, 09:21 PM   #3
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Originally Posted by big boar View Post
This may have been discussed before but I'm not computer savy so I have to ask. What do other Jeep owners do to increase fuel economy? I was thinking about installing a K&N filter to get a few more kilometres, any other ideas without breaking the bank.
Well short story is there is nothing you can do cheaply that will increase mpg besides changing your driving habits. Do you have larger than factory tires? If so you might need to re-gear. I would also not recommend a K&N filter. Studies have shown that K&N lets in more small particles like dust and sand then the stock box will.
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Old 12-14-2012, 09:27 PM   #4
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Well short story is there is nothing you can do cheaply that will increase mpg besides changing your driving habits. Do you have larger than factory tires? If so you might need to re-gear. I would also not recommend a K&N filter. Studies have shown that K&N lets in more small particles like dust and sand then the stock box will.
What about the drop in K&N filter made the factory stock box?
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Old 12-16-2012, 01:50 PM   #5
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Actually the milage isn't really terrible, just thought I could squeeze a few drops of gas. I have a 3.6L Sahara Unltd and I get about 12.5 L/100km. Methinks that's close to 18MPG and that's combined city-hwy. I know a guy with a Honda CRV(?) and he's not pleased with the 20 MPG he gets especially when he was told he'd get close to 30! REALLY happy with the Jeep so far, doubt I'll ever buy any other type of vehicle.
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Old 12-17-2012, 11:43 AM   #6
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Nothing you can do to the Jeep will change the MPG. No intake modification, change, filter, spacer, magic magnets. Area 51 designed overclocked computer chips. No exhaust change, removal, going to 8" pipes. Airing your tires up to 100+ PSI, running a 3" lift in the rear (so you are always going down hill.)

Jeeps are designed for off-road ability. They crawl up mountains, conquer desserts, ford rivers. They are not aerodynamic gas sippers.

As long as they are geared correctly, just go lightly on the gas peddle and enjoy the ride.
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Old 12-17-2012, 03:52 PM   #7
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The words "gas economy" should be banned from this site lol

Light pedal, and keep the Jeep maintained is the best but there is nothing else you can really do to get that dramasic change in mileage unless you trade it for a Prius.
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Old 12-17-2012, 06:19 PM   #8
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If you tailgate a semi on the interstate, you can increase your efficiency by about 5 MPG. Just maintain a 2 foot space between you and the semi.

If you are that close you may wish to just attach a length of chain between the 2 vehicles and get fantastic milage.
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Old 12-17-2012, 10:07 PM   #9
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If you tailgate a semi on the interstate, you can increase your efficiency by about 5 MPG. Just maintain a 2 foot space between you and the semi.

If you are that close you may wish to just attach a length of chain between the 2 vehicles and get fantastic milage.
Agreed, great technique
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Old 12-18-2012, 10:26 AM   #10
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In Canada is it called gas kilometeage? J/k :-D
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Old 12-18-2012, 11:07 AM   #11
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I boosted my Jeep's economy by about 3 or 4 mpg by shortening the gap in my spark plugs from .035 to .033.
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Old 12-18-2012, 03:17 PM   #12
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I boosted my Jeep's economy by about 3 or 4 mpg by shortening the gap in my spark plugs from .035 to .033.
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Old 12-18-2012, 06:14 PM   #13
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Good replies, everyone has a great sense of humour. In Canada a lot of people still call it "milage" which is sort of odd considering we use metric. I think most of us say "fuel economy" which is sort of odd considering I drive a Jeep. Lotsa fun either way.
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Old 12-18-2012, 06:26 PM   #14
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I just worked this out, 12.5L/100km=22+MPG. That's Canadian gallons which are larger than the US gallon. US gallons would be = 19MPG US. If I spend a bit more time on the highway I can easily get 11.5L/100km. Actually I've gotten it down as low as 11 but that's on a slow highway and my speed doesn't exceed 100km/hr, that's about 60MPH. Anyway, at 11.5L/100 works out to 25MPG here and 20MPG US.
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Old 01-06-2013, 01:40 AM   #15
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Don't they sell the diesel model in the US ??
My 2011 manual diesel Is showing 25.9 mpg that's in town (not rush hour).
obviously starts off at about 20mpg engine cold. Once its up to temperature shows 25.9mpg Was using the stop start feature . Probably not getting the best out of it yet. Just bought it. Should be good on a proper run.
Usual things to check for decent mileage

1 Make sure engine properly tuned.
2 Don't carry excess crap in the boot.
3 Tyres properly inflated.
4 After market tuning chip.(plugs straight in) can definitely get for my diesel.+15% economy
I'm sure there's a few other things to add to the list.
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Old 01-06-2013, 07:23 AM   #16
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Don't they sell the diesel model in the US ??
My 2011 manual diesel Is showing 25.9 mpg that's in town (not rush hour).
obviously starts off at about 20mpg engine cold. Once its up to temperature shows 25.9mpg Was using the stop start feature . Probably not getting the best out of it yet. Just bought it. Should be good on a proper run.
Usual things to check for decent mileage

1 Make sure engine properly tuned.
2 Don't carry excess crap in the boot.
3 Tyres properly inflated.
4 After market tuning chip.(plugs straight in) can definitely get for my diesel.+15% economy
I'm sure there's a few other things to add to the list.
No they don't infortunantly, courtesy of the EPA.
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Old 01-06-2013, 06:13 PM   #17
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This weekend I took a drive to my brothers place, filled up on the highway and set the metre. I kept to driving the speed limit (80KPH) or a bit more (90) and hardly had any stops. I got as low as 9.3 L per 100KM. Most of the time it registered 10 or slightly under, remember I didn't have to adjust my speed for much of the trip except on the way home I hit 100 (62MPH). That calculates to 29 MPG(Canadian gallons) which is about 24 MPG US. I wasn't in a hurry and really drove like an old Granny but with the 3.6L engine that's not bad. Sorry, I didn't mean to insult old Grannies. Actually a friend of mine is a Granny and she drives like she's in the Indy 500.
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Old 01-06-2013, 07:07 PM   #18
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I get 12 mpg in mine and drive like a grandma. 55-60 mph 2500rpm or so. Real light foot. Just got it a week ago. Im running injector cleaner thru this tank and Im gonna put a new air cleaner, change the oil, plugs and wires but am not really expecting any increase in fuel economy. I need to repack the bearings too cause I buried it in soup on new years day. My other wrangler got 12-13mpg so Im not really expecting much of a change...
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Old 01-06-2013, 07:18 PM   #19
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Mine only has 1500km on her so far and I have been getting around 11 L/100KM on the highway and 13/100km in the city. Not quite what the sticker said but oh well. I find keeping an eye on the Eco On indicator helps to keep me feathering the pedal. Hopefully as I wear the engine in she will get a bit better and hit the 9L/100KM mark. Oh and mine is a 2 dr Sport.
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Old 01-06-2013, 07:22 PM   #20
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I average 14 to 14.5 mpg. Doesn't help your driving a box down the road, not exactly streamlined
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Old 01-06-2013, 07:39 PM   #21
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Originally Posted by ninjaturtle0 View Post
The words "gas economy" should be banned from this site lol

Light pedal, and keep the Jeep maintained is the best but there is nothing else you can really do to get that dramasic change in mileage unless you trade it for a Prius.
Or get a Honda, mileage and jeeps are not really compatable, to many moving parts causing drag, the best I have every gotten with my 4x4 Liberty is 20 mpg going accross the Colorado Plateau, I do not even measure my trail jeep.
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Old 01-06-2013, 08:45 PM   #22
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I boosted my Jeep's economy by about 3 or 4 mpg by shortening the gap in my spark plugs from .035 to .033.
Is there a thread guide with pics on how to do this? Sounds easy and great payoff














































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Old 01-06-2013, 09:56 PM   #23
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That was PURE highway and only doing 80KPH(62MPH). Straight city is about 14L/100 (17MPG), city+highway=12.5L/100 (19MPG). In the fall on the way to hunt camp, 3 guys with all our gear and food, towing a trailer with a quad on it, I got about 14.5L/100(16MPG). Thats in a Wrangler Sahara Unltd, 2012. I also watch the ECO ON indicator, sort of makes me watch the gas foot. Then again that sort of takes some of the fun out of having a Jeep.
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Old 01-06-2013, 10:14 PM   #24
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http://www.wranglerforum.com/f33/rpm-mpg-133894.html

Also....remember that the only "True" indication of average MPG is to calculate it based on miles driven (odometer) divided by gallons consumed (gas pump). Anything else is an estimation.

For example, using the handy "Average fuel mileage" calculator built into our drivers information centers is largely dependant upon EXACTLY when you hit the rest button to start calculating the "average".

Case in point...I used to press reset immediately after refuelling, while still sitting next to the pump, at about the same time I reset the trip odometer. Sounds logical...restart evertything at the same time. Problem is that while sitting there idling and not moving, and telling it to reset its averaging calculations, it starts those calculations with ZERO mpg....which means eveything pretty much sucks from there...averaging around 15mpg

I started resetting the average calculator while at cruise speed on the toll road...presto...like magic I was seeing 22mpg...woo hoo!!!.

Then, yesterday, I hit rest when coasting off of the 85mph toll road and onto the frontage road and the computer showed me I had an "average fuel economy' of 2253 MPG....no kidding...TWO THOUSAND TWO HUNDRED AND FIFTY THREE MILES PER GALLON.

I dang near shat myself when I saw that...it only showed for about 5 seconds and started dropping FAST. I was in so much shock that I forgot to take a photo for the forum.

I'll do it again just for grins some time. its easy to play the game once you know how to trick it.

The point being...miles divided by gallons is the only true indication of fuel economy.

Manage your RPM and you will manage yout MPG.

See link above.

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