Jk Unlimited 3.6 fuel consumption





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  1. #1
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    Default Jk Unlimited 3.6 fuel consumption

    Afternoon Chaps

    I am thinking of getting a Wrangler again. I have owned a number of Jeeps before but never the 3.6. What are you guys averaging?

    I am struggling to find info on the auto....is it a 6speed?

    I'm guessing about 14kl/100 in town and 12ish open road. I plan on fitting no bigger than a 33inch tyre.

    Thanks guys
    Jayson
    Last edited by Jay4; 2020/07/04 at 03:42 PM.

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  2. #2
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    Default Re: Jk Unlimited 3.6 fuel consumption

    I had a 2013. It still had the 6 speed automatic, IIRC. Or was it a 5 speed? Can't remember. Either way, it wasn't the 8 speed.
    I ran 33's on a 2 inch lift. I averaged around 15 l/100km. When you take it easy, it is not too bad. If you drive faster than 110km/h, you will pay at the pumps.
    It is not light on petrol. But it does go quite nicely.

  3. #3
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    Default Re: Jk Unlimited 3.6 fuel consumption

    2012 3.6 JKUS, unmodified, slightly bigger tyres, around 12.5 mixed, 11 open road, 14 heavy traffic.
    Cruised to Rustenburg and back recently at 120 on speed control and we got 11.4. Very very good for a big V6 with no aerodynamics.
    2012 Jeep Sahara Unlimited 3.6 V6
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  4. #4
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    Default Re: Jk Unlimited 3.6 fuel consumption

    5spd auto. When std 12 L/100. Lift with 33's (muds) 15L/100

  5. #5
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Had a 2012 jeep 3.6 with 2" lift and 33" M/t tyres and averaged around 14l/100km around town. Didnt own it long enough to do a long trip in it though so I cant comment on highway consumption.

  6. #6
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Thats actually not too bad for a brick really....

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  7. #7
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    Default Re: Jk Unlimited 3.6 fuel consumption

    This shows what I have recorded in the last 133 fills. The best was jhb to durban. My vehicle is used off road at least once a month. It is also used to tow my off road caravan (1500kg) where it gives approx 17.5L/100

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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by mplester View Post
    This shows what I have recorded in the last 133 fills. The best was jhb to durban. My vehicle is used off road at least once a month. It is also used to tow my off road caravan (1500kg) where it gives approx 17.5L/100
    Actually those towing stats are good. Most competitors won't get 20L / 100.
    2012 Jeep Sahara Unlimited 3.6 V6
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  9. #9
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by jelo View Post
    Actually those towing stats are good. Most competitors won't get 20L / 100.
    Very. It works very well as a tow vehicle when using the box in manual mode

  10. #10
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Goodness that about what I am getting in my 3.0 CRD......very impressive actually all things considered.

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  11. #11
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Jay4, you won't be sorry with the Pentastar. Don't get the CRD.
    2012 Jeep Sahara Unlimited 3.6 V6
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    Default Re: Jk Unlimited 3.6 fuel consumption

    2012 JK 3.6 Auto. 215000KM
    I generally average between 11.5 L/100km and 12.3 in town.
    Can get down to 10.5 on highway at steady 100km.

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  14. #13
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    Default Re: Jk Unlimited 3.6 fuel consumption

    You live at the coast, don't believe the lies from the up country boys

    Unfortunately I cannot tell you what it is, I adopted a new routine relatively quickly after I got the Wrangler.
    Stop, fill up, close eyes, pay, toss slip

    Onboard computer tells me in town 17 about. (That is stop start all the time, no freeway use at all which makes a big difference. Open road easily down to 14.)

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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by gdurban View Post
    2012 JK 3.6 Auto. 215000KM
    I generally average between 11.5 L/100km and 12.3 in town.
    Can get down to 10.5 on highway at steady 100km.
    Sounds right.
    2012 Jeep Sahara Unlimited 3.6 V6
    Percivamus

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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by Jay4 View Post
    I have owned a number of Jeeps before but never the 3.6. What are you guys averaging?
    The 3.6 is the corporate engine for FCA but it was engineered by the previous daimler-chrysler, The bottom end was co-developed by Mercedes and its probably the most reliable engine Chrysler has had in the past 15 years. Consumption on mine is around 16.5l/100 in town.

    https://www.pentastars.com/engines/tech.php


    Quote Originally Posted by Jay4 View Post
    I am struggling to find info on the auto....is it a 6speed?
    The unit is a 5-speed Mercedes WA580 5-G-Tronic.

    https://www.allpar.com/mopar/transmi...AG1-WA580.html


    As Jelo has advised, stay away from the CRD, Why?
    1. Its a discontinued engine.
    2. Fuel Economy is not that much greater than the 3.6.
    3. Parts are harder to find and are more expensive.
    4. It has a not-so-stellar reliability track record in our warm climate.
    2014 Jeep Wrangler Unlimited 3.6 Sahara
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  19. #16
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Yup one has to pay for the pleasure of full power at the coast :-)

    And do enjoy the gearbox not hanging around in first, changing up to second promptly and using the torque to power up the speedometer. I used to select 4th on the shifter as it seemed to shift nice and quickly into second then.

    Oh and those posting just above ten on consumption, I assume you are the guys with the SWB 6spd manual versions ;-)
    Quote Originally Posted by Dirk View Post
    You live at the coast, don't believe the lies from the up country boys

    Unfortunately I cannot tell you what it is, I adopted a new routine relatively quickly after I got the Wrangler.
    Stop, fill up, close eyes, pay, toss slip

    Onboard computer tells me in town 17 about. (That is stop start all the time, no freeway use at all which makes a big difference. Open road easily down to 14.)


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  20. #17
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    Default Re: Jk Unlimited 3.6 fuel consumption

    In town with 35's 4.10 gearing I got 18

    Now with 4.88 gearing I get 16
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  21. #18
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by Jeepanator View Post
    In town with 35's 4.10 gearing I got 18

    Now with 4.88 gearing I get 16
    How's the 35's with 4.88s? Does it improve drivability significantly compared to stock 4.10s? Much less downshifting when you approach hills when cruising?
    Last edited by Alwyn777; 2020/07/16 at 10:02 PM.
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    Default Re: Jk Unlimited 3.6 fuel consumption

    It is a huge improvement, one of my best mods.

    I never change down on the highway anymore feels like a auto

    At 120hm/h I do about 2900rpm which is in that torque zone to have instant power on tap.

    On the trails I have my proper crawler gear back, I cannot tell you how happy I am.
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  24. #20
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    Default Re: Jk Unlimited 3.6 fuel consumption

    Quote Originally Posted by Dirk View Post
    You live at the coast, don't believe the lies from the up country boys

    Unfortunately I cannot tell you what it is, I adopted a new routine relatively quickly after I got the Wrangler.
    Stop, fill up, close eyes, pay, toss slip

    Onboard computer tells me in town 17 about. (That is stop start all the time, no freeway use at all which makes a big difference. Open road easily down to 14.)

    I am so with you on this Dirk.
    We don't drive Jeeps for their petrol consumption...it's all about love for the brand
    Sue

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