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View Poll Results: YOUR AVERAGE MPG?
20 MPG or more 17 8.76%
19 MPG 10 5.15%
18 MPG 17 8.76%
17 MPG 22 11.34%
16 MPG 41 21.13%
15 MPG 33 17.01%
14 MPG 27 13.92%
13 MPG 16 8.25%
12 MPG 19 9.79%
11 MPG or less 8 4.12%
Multiple Choice Poll. Voters: 194. You may not vote on this poll

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Old 01-28-2013, 08:00 PM   #61
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I just did my first long trip on my new 33" Muds

181k's used 25l = 13.8l per 100k
(That was a full tank at the start, arrived at the trail, and refilled, using GPS for distance as speedo is out)

or as you would put it 17MPG's

More than happy with that...


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Old 01-28-2013, 08:09 PM   #62
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I use fuelly.com and have tracked every fill up 6001 miles and my average is 19.5. I drive 90 miles a day 80 miles of highway.

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Old 01-28-2013, 08:16 PM   #63
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Quote:
Originally Posted by crussellii View Post
i use fuelly.com and have tracked every fill up 6001 miles and my average is 19.5. I drive 90 miles a day 80 miles of highway.


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Old 01-28-2013, 09:24 PM   #64
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I heard that the 4 cyl (the one I have) gets worse mpg than the 6 cyl
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Old 01-28-2013, 10:15 PM   #65
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98 TJ ATK 4.7 stroker 3sp auto 8.8 rear end 355 gears 31" tires 63mm throttlebody borla header, hi flow cat.&muff. ave 17.5 if driven normal, so sometimes i get 15 to 16, yeha
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Old 01-29-2013, 12:27 AM   #66
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Why do i doubt this?
Yea I might too he must be getting pulled by a tow truck.

I have a 2.5L 33" BFG AT tires, 4.10's, 4.0L throttle body, Header, High flow muffler, 20 gal tank, I used to live in Vagina at sea level and drive between 55 60 and I would get 14 to 15 MPG all day long.

I now live in Denver 5460' higher, use lower 85 octane fuel and drive between 60 and 65 to work 30mi one way and best I've achieved is 21 MPG worst I've seen is 18.3 MPG thought I would get worse MPG but its higher go figure.
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Old 01-29-2013, 02:43 AM   #67
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99 wrangler 4.0, 5 speed, i average about 18 mpg, i have a k&n air intake which i think helps, but I also feel that i'm getting better city then highway? haha
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Old 01-29-2013, 08:22 AM   #68
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Originally Posted by dcarey View Post

Yea I might too he must be getting pulled by a tow truck.

I have a 2.5L 33" BFG AT tires, 4.10's, 4.0L throttle body, Header, High flow muffler, 20 gal tank, I used to live in Vagina at sea level and drive between 55 60 and I would get 14 to 15 MPG all day long.

I now live in Denver 5460' higher, use lower 85 octane fuel and drive between 60 and 65 to work 30mi one way and best I've achieved is 21 MPG worst I've seen is 18.3 MPG thought I would get worse MPG but its higher go figure.
To me the better fuel economy makes sense since the air is less dense at altitude there is less fuel going into the engine to keep the fuel/air mixture correct. Same reason as when you're flying a light airplane you pull the mixture knob out to lean the mixture once you reach your cruise altitude a few thousand feet higher than when you started.
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Old 01-29-2013, 10:39 PM   #69
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To me the better fuel economy makes sense since the air is less dense at altitude there is less fuel going into the engine to keep the fuel/air mixture correct. Same reason as when you're flying a light airplane you pull the mixture knob out to lean the mixture once you reach your cruise altitude a few thousand feet higher than when you started.
Nice that makes sense thanks
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Old 01-29-2013, 11:17 PM   #70
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Also the myth of lower rpm=higher mpg is just that a MYTH

I found out I get the best mileage when I'm in the power band.
45mph @ 1600rpm = 15mpg
45mph @ 2300rpm = 16-17mpg
I've seen the same thing. Below 2000 rpms the jeep mpg suffers. Over 2000 rpms always results with less mpg with more rpms. I've been watching the instant mpg on my SG for many years now. Even full throttle in a higher gear (over 2000 rpms) will result with better mpg then less throttle in a lower gear. I get 13.98 mpg with 35s and 4.10s.
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Old 01-29-2013, 11:21 PM   #71
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I have a 97, 4.0, 5 speed. I was getting 18 until I regeared from 3.07 to 4.10, now 15 average. That's with 31's.
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Old 01-30-2013, 06:55 PM   #72
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16.8 mpg with 3" lift, 31-10.50 Good Years at 30psi, soft top, over windshield light bar w 4 lights and a PA speaker ,back seat and spare 31 tire and a pretty heavy emergency off road bag with high lift jack and tools
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Old 01-30-2013, 08:19 PM   #73
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I have a 97 - 4.0 with a 5 speed, stock, no lift, 245,000 miles Michelin street tires now, had Goodyear wranglers with no change in milage.

19.5 to 20 with hard top
19.0 to 19.5 with soft top
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Old 01-30-2013, 09:24 PM   #74
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Old 01-30-2013, 09:24 PM   #75
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No idea, but its bad
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Old 01-30-2013, 09:26 PM   #76
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My flying brick is always on empty. Seems like it gets about 5 mpg around town.
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Old 01-31-2013, 12:42 AM   #77
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I call BS on anyone saying they get over 20mpg in a Jeep.
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Old 01-31-2013, 12:51 AM   #78
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Quote:
Originally Posted by Brew
I call BS on anyone saying they get over 20mpg in a Jeep.
When my jeep was not lifted and after i built a cai and my exhaust i could easily get 21 driving back and forth to work. Know, not so much. Im getting around 16.5
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Old 01-31-2013, 01:26 AM   #79
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Originally Posted by Brew
I call BS on anyone saying they get over 20mpg in a Jeep.
x2....I know it makes one sleep better when one says he gets 20+ from their tj, quit lying to yourselves and get over it, I'm at 15-17 and I don't need to lie to my ego to keep myself from regretting my purchase of a gas guzzler.
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Old 01-31-2013, 01:44 AM   #80
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x2....I know it makes one sleep better when one says he gets 20+ from their tj, quit lying to yourselves and get over it, I'm at 15-17 and I don't need to lie to my ego to keep myself from regretting my purchase of a gas guzzler.
I got 21 in my Lj I babied it on my 1000 mile trip. But I get 17-18 with my normal driving or 15 or less when I put my big tires on. So I bought a car I save gas while jeep I can work on and have fun with.
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Old 01-31-2013, 01:58 AM   #81
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I have a 4" lift and 33 mud tires... went four wheeling all day sunday, 5 speed I6. in 4lo still managed to get 12 mpg for the tank (there was some highway driving too and from the park)
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Old 01-31-2013, 02:31 AM   #82
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Anyone notice that according to specs, the TJ should have a 15gallon tank, yet (for mine anyway) the gas pump shuts off when around 16gallons? So which one do you use for the math for your MPGs?
If I'm not mistaken all TJ's have 19 gallon tanks. At least mine does.
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Old 01-31-2013, 02:59 AM   #83
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19 gal was new for 99 and later.
Secondly, you don't use max tank size for computations... gas in, mileage out.
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Old 01-31-2013, 07:16 AM   #84
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Quote:
Originally Posted by Brew View Post
I call BS on anyone saying they get over 20mpg in a Jeep.
Quote:
Originally Posted by D2K47 View Post

x2....I know it makes one sleep better when one says he gets 20+ from their tj, quit lying to yourselves and get over it, I'm at 15-17 and I don't need to lie to my ego to keep myself from regretting my purchase of a gas guzzler.
Because your jeep doesn't, doesn't mean someone else's doesn't. You have to think about where people live and how hilly or flat the terrain is, how they drive.
When my 4 banger was on stock tires it easily got 20mpg now on 31's I get 17.5-18.5... its pretty flat here.
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Old 01-31-2013, 12:53 PM   #85
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Because your jeep doesn't, doesn't mean someone else's doesn't. You have to think about where people live and how hilly or flat the terrain is, how they drive.
When my 4 banger was on stock tires it easily got 20mpg now on 31's I get 17.5-18.5... its pretty flat here.
I live in the Prairie State sir I know all about flat lands...Folks who claim their 8+ year old tj is still getting them 20+ mpg need a serious reality check. If they do know when to shift gears precisely, tires always have the correct psi in them, and all the other factors I seriously doubt they are getting 20+mpg from a tj.
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Old 01-31-2013, 12:59 PM   #86
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I calculate my mileage in smiles to the gallon. But seriously why worry about this stuff. You have one of the greatest off road vehicles ever made, it's built to go anywhere not be good on fuel! You want mpg then buy a civic.
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Old 01-31-2013, 01:38 PM   #87
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I live in the Prairie State sir I know all about flat lands...Folks who claim their 8+ year old tj is still getting them 20+ mpg need a serious reality check. If they do know when to shift gears precisely, tires always have the correct psi in them, and all the other factors I seriously doubt they are getting 20+mpg from a tj.
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Old 01-31-2013, 02:08 PM   #88
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My 2c for the TDI conversion...25 with mostly city putting, a few trails but nothing major so far. The 4.11s are satisfactory but not ideal, with 4.56 being what it gets this spring. I doubt it'd ever do better than high 20's in its current config lift/tires.
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Old 01-31-2013, 09:26 PM   #89
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I live in the Prairie State sir I know all about flat lands...Folks who claim their 8+ year old tj is still getting them 20+ mpg need a serious reality check. If they do know when to shift gears precisely, tires always have the correct psi in them, and all the other factors I seriously doubt they are getting 20+mpg from a tj.
Sounds like you just got the rotten egg then. before the lift and larger tires, I DON'T live in the flats and could still get over 20 on the free way every now and again. 4.0L 5 speed. 30" tires. granted i drove 55 to do so
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Old 01-31-2013, 11:37 PM   #90
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Honestly I got a solid 18-18.5 mpg city/highway with 33s and 3" SL. After I added my 1.25 BL I absolutely cannot break 16mpg city/highway. It baffles me.

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