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99 xj, 31's under a 4.5" lift, getting 15 mpg..is that average or could it be better?

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Old 01-13-2014, 09:31 AM
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What would the max mpg be for a stock cherokee?
Old 01-14-2014, 09:24 PM
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what year and motor
Old 01-14-2014, 10:30 PM
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I'm pretty much getting 15 - 17 mpg on my stock 91 with a 4.0 auto. You don't drive a jeep for the gas mileage. It's a very capable, reliable, and IMO comfortable vehicle.
Old 01-15-2014, 12:24 AM
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Originally Posted by ryan4xj4
What would the max mpg be for a stock cherokee?
4.0 Cherokees were rated 15 city 20 highway.
I get about 20 average. I got 24 on a long trip recently. (lot of semi drafting at 70 and had my mirrors in...not worth it lol) 2wd though.
Old 01-15-2014, 06:38 AM
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I have NO idea how they were rated 15/20. I've NEVER gotten 20 on the highway. Ever. Or even CLOSE to 20. I mean, we're driving a heavy, square, non-aerodynamic vehicle. I get worse gas mileage on the highway actually. Im lucky if I get over 15 on the highway. Usually its way worse. If I cant draft off anyone, its windy and Im running the AC I might only get 10mpg!!!!!


Part of the problem is, my Jeep HATES doing 65-70 and our highway is 75 and 65. Everyone goes 80ish and 75, and since my Jeep LOVES 75-80, I find myself driving that fast the whole way and BOY does she suck up the gas.


Last week I was driving from Providence, RI to Augusta, Maine, about 225 miles. It was BAD weather and I did like 40-65 the whole way. I made it using 5/8's of a tank. Augusta to my house is 149 miles. That usually takes me 1/2 a tank. Speed is a HUGE factor in gas mileage.
Old 01-15-2014, 07:58 AM
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Originally Posted by bigvig
I have NO idea how they were rated 15/20. I've NEVER gotten 20 on the highway. Ever. Or even CLOSE to 20.
http://www.fueleconomy.gov/feg/how_tested.shtml

Here is an explanation of why they're rated at 20.
Old 01-21-2014, 10:38 AM
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Default 99 xj, 31's under a 4.5" lift, getting 15 mpg..is that average or could it be...

I get about the same mileage as you do, and mine's stock. =P

Tune-up won't hurt, though... Accel's got a good kit on Amazon for under $60, I think.
Did mine in under an hour.

Last edited by 2WDUnderachiever; 01-21-2014 at 10:40 AM.
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