3.7 fuel mileage

Discussion in 'KJ General Discussion' started by Shane Giggie, Jan 18, 2020.

  1. Shane Giggie

    Shane Giggie Full Access Member

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    Hello there, just wondering what everyone is getting for mileage out of a tank of fuel in there KJ and KK's.
     
    Last edited: Jan 18, 2020
  2. tommudd

    tommudd Moderator Staff Member Moderator

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    03 and 04 both get about 21-22 on the road,
    04 at 75 plus , lifted 4.5 inches, 4.10s , 32s aftermarket front , rear bumpers, aftermarket heavy skids etc averaged 22 across Pa
    03 lifted does about the same
    05 averaged 21 down through WVa, Va and NC and back yesterday at 75-80
    never measure around town since nearest town is only 1/2 mile long LOL
     
  3. lfhoward

    lfhoward Full Access Member

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    Tom’s right for a KJ or KK that hasn’t been modified or one that has but was also regeared to run with the larger tires.

    My unregeared KK with 31’s and a 4” lift gets 8-12 mpg in the city and about 17.5 on the highway. I can coax 20 mpg following trucks on long trips on the interstate.

    Regearing is on my to-do list. I’ve already identified the shop I’m going to use, but it’ll cost me about $2300 or about $3000 if I put in a TrueTrac at the same time. This Is a lot but it is good for the mid Atlantic/ northeast. In the Midwest, it would no doubt be less expensive to have the same work done.
     
  4. LONGJEEPOWNER

    LONGJEEPOWNER Full Access Member

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    My 2010 gets around 21-22 mpg on the highway and 18 in the city.
     
  5. Shane Giggie

    Shane Giggie Full Access Member

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    I'm more talking about how many miles you get on a tank sorry I worded it wrong
     
  6. lfhoward

    lfhoward Full Access Member

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    For me this would translate to about 175 miles per tank city, 250 highway. Roughly.
     
  7. ltd02

    ltd02 Comfortably numb KJ Supporting Member

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    Fuel tank capacities changed over the years. What year is the OP's KJ?
     
  8. Shane Giggie

    Shane Giggie Full Access Member

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    Thanks, I was just curious.
     
  9. Shane Giggie

    Shane Giggie Full Access Member

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    Mines a 06.
     
  10. ltd02

    ltd02 Comfortably numb KJ Supporting Member

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    If my memory is correct the 05-07 had a 20.5 gallon tank. I know my 05 had the 20.5. The 02-03 had an 18.5 gallon tank and I think the 04 had a 19.5, Weird isn't it. Must be a Jeep thing.

    KKs were all 19.5 I believe.
     
  11. Shane Giggie

    Shane Giggie Full Access Member

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    Yes it is. You're right my 06 is 20.5GL.
     
  12. tommudd

    tommudd Moderator Staff Member Moderator

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    ?????????????????
    who the heck cares how big your gas tank is?
    If you want gas mileage figures I can see but saying I can go X number of miles in mine tells me nothing at all, like mentioned, size of tank etc
    Plus I never go below 1/2 tank or so in most cases , too hard on the fuel pump if you run them down close to empty.
     
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  13. ltd02

    ltd02 Comfortably numb KJ Supporting Member

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    I was getting about 20-21 mpg in my 05. That would be around 410 per tank. I usually filled up at a bit over 350.

    My 02 was lucky to get 16-17 mpg same route. I would usually fill up around 250 in that one.

    Tom is right BTW. ;) As usual.
     
  14. HoosierJeeper

    HoosierJeeper Gold Supporter/Admin Staff Member Administrator

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    With lift, winch, skids, rockrails and bigger tires (not regeared) I can get 18-19...about 300-320 miles a tank for highway.