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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > just got 16 mpg on the highway on a trip to chicago!

DynoMax fall Ultra Flo Welded rebate is here!ROCKRIDGE4WD Introduces a NEW Jeep Wrangler JK *led* tail Shocktober is here! Get new shocks for your Jeep!!!!

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Unread 03-19-2006, 09:34 AM   #1
19psi
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just got 16 mpg on the highway on a trip to chicago!

wow! 16mpg! i set the cruise at 67 and just drove. i usually get about 12 around town so i was veyr happy to see 16.

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98 xj, 32x11.5 BFG KMs, welded rear, Long arms, 4-4.5" lift, custom bumpers, winch, H4 conversion, etc.
07 chevy duramax, CCLB, Banks stuff, 18" rockstars, 5" exhaust, HIDs, big stereo, and more.
kawasaki zx-12r 190 hp of pure death!
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Unread 03-19-2006, 09:53 AM   #2
BlaineWasHere
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At 67 I would get 18 or 19... Going 75 I get 16-17... If I go any faster it gets BAD really fast... at 80 I get like 11... Around town I get 13.5-14.5
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Unread 03-19-2006, 10:37 AM   #3
Endurancevm
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At 110mph(fuel cutoff on WK) im in 4th gear doing 5000rpm and get 2mpg and at 110mph shift into 5th gear i get about 10mpg. Normal crusing speeds(55-60mph) i get avg around 20 or so.
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Unread 03-19-2006, 10:38 AM   #4
seel2000
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I'm getting around 13.5 (granny driving) in town and 19 hwy doing 70
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Unread 03-19-2006, 11:54 AM   #5
violatedppl
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I hate you all, I average 13.5.
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Unread 03-19-2006, 12:00 PM   #6
19psi
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i'm happy with it because after i put the 60lb. tires on it, mileage went way down from 18-19 to what seemed like 12. haven't driven it on a long trip until recently and i was pleasantly surprised.
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98 xj, 32x11.5 BFG KMs, welded rear, Long arms, 4-4.5" lift, custom bumpers, winch, H4 conversion, etc.
07 chevy duramax, CCLB, Banks stuff, 18" rockstars, 5" exhaust, HIDs, big stereo, and more.
kawasaki zx-12r 190 hp of pure death!
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Unread 03-19-2006, 12:06 PM   #7
seel2000
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Are you guys taking into account the change in MPH on the speedometer. I found a calculator here: http://www.4lo.com/4LoCalc.htm

I added 1.25" wheel spacers to my WJ this week and noticed about a .5 loss in MPG in the city right away. Pics of my updated setup including wheel spacers and complete trimming done to bumpers and wheel wells (raining now)
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2000 WJ Laredo -- Kevin's 2.5", Rubicon twin-tube shocks, 265/75/16 Firestone Destination MT's, Pioneer head-unit, 800w RockFosg, 2x10 Kicker Comp Subs, Memphis spkrs front&back

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Unread 03-19-2006, 12:12 PM   #8
BlaineWasHere
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Quote:
Originally Posted by 19psi
i'm happy with it because after i put the 60lb. tires on it, mileage went way down from 18-19 to what seemed like 12. haven't driven it on a long trip until recently and i was pleasantly surprised.

Those swampers arnt helping your MPG average.
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Unread 03-19-2006, 02:02 PM   #9
19psi
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Quote:
Originally Posted by BlaineWasHere
Those swampers arnt helping your MPG average.
exactly. that's why i don't drive it everyday!
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98 xj, 32x11.5 BFG KMs, welded rear, Long arms, 4-4.5" lift, custom bumpers, winch, H4 conversion, etc.
07 chevy duramax, CCLB, Banks stuff, 18" rockstars, 5" exhaust, HIDs, big stereo, and more.
kawasaki zx-12r 190 hp of pure death!
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Unread 03-19-2006, 02:08 PM   #10
SteelBlue_WJ
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I hate all you guys... my display says I'm getting 9.5.... doesnt help that lately I've been driving like I have a death wish...
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Unread 03-19-2006, 02:12 PM   #11
rrubio
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Quote:
Originally Posted by SteelBlue_WJ
I hate all you guys... my display says I'm getting 9.5.... doesnt help that lately I've been driving like I have a death wish...
Holy **** 9.5.I get roughly 14-15 on the streets and about 17 on long trips.
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Unread 03-19-2006, 02:17 PM   #12
SteelBlue_WJ
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like I said, my foot is heavier then my WJ... I usually drive like a granny... but lately....
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2001 Steel Blue WJ Laredo SA 4x4, 3.5" lift, Apperance Package with factory Laredo Steel Blue cladding/leather
Conferr Roof Basket with custom Randy Ellis Design light cage, WAAG grille guard and Hella lots of 500 lights


2004 Wrangler Sport, 2.5" and 31's, nothing special

"For all sad words of tongue and pen, the saddest are these, 'It might have been.' "
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Unread 03-19-2006, 02:32 PM   #13
Blake
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~15-16 combined driving.

I've noticed if I stay off the highway and take backroads, I'll average ~17.5 mpg.
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Unread 03-19-2006, 06:41 PM   #14
ERAUTreeTopFlye
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I'm about a week away from planning all trips around low-level wind flow. No more driving into a head wind for me.
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Unread 03-19-2006, 06:55 PM   #15
BlaineWasHere
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I folowed a 18 wheeler once going about 68 and I was getting about 26 MPG... I had ZERO wind resistance. Pretty cool!
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