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Old 01-02-2012, 09:11 PM   #31
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I wonder if a different engine, one with, say, 50% more torque would improve Wrangler mpg?
On my F-150, I'm getting 16.5 mpg, pushing 6,000 lbs. But my engine is puttin out 400 lbs/ft or so.
Any of you Wranglers out there with resto-mod engines care to give your mpg?
Wonder what else there is about the Wrangler that causes poor MPG other than wind resistance? It's really not all that heavy. Guess it's all in the gearing.
What is the rpm at cruise at 55 mph?

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Old 01-02-2012, 09:25 PM   #32
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My girlfriend drove my Jeep the first time this weekend. I could definitely see different driving habits. I want to almost say, I believe her driving could easily do 20+ MPG, Whereas my driving is 14-15 MPG. I will have to adjust my ways...maybe one day

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Old 01-04-2012, 12:05 PM   #33
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Quote:
Originally Posted by clogan View Post
I wonder if a different engine, one with, say, 50% more torque would improve Wrangler mpg?
On my F-150, I'm getting 16.5 mpg, pushing 6,000 lbs. But my engine is puttin out 400 lbs/ft or so.
Any of you Wranglers out there with resto-mod engines care to give your mpg?
Wonder what else there is about the Wrangler that causes poor MPG other than wind resistance? It's really not all that heavy. Guess it's all in the gearing.
What is the rpm at cruise at 55 mph?
I don't have to be anywhere anytime soon so I drive my 2012 JK 2door at 55 which is about 1750 rpm. I'm getting 21.5 mpg. Every other tank fillup I drive at 60 which is 1800 rpm and I get anywhere between 20 and 21 mpgs.
I drive in the slow lane and let the world go by.
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Old 01-04-2012, 12:58 PM   #34
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Originally Posted by Dozer Don View Post
I don't have to be anywhere anytime soon so I drive my 2012 JK 2door at 55 which is about 1750 rpm. I'm getting 21.5 mpg. Every other tank fillup I drive at 60 which is 1800 rpm and I get anywhere between 20 and 21 mpgs.
I drive in the slow lane and let the world go by.
I do this, then every now and then when I`m going down hill, I`ll punch-it and take her up to 100 then back-off.
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Old 01-04-2012, 01:26 PM   #35
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I don't have to be anywhere anytime soon .... I drive in the slow lane and let the world go by.

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Old 01-04-2012, 01:36 PM   #36
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Do what I do - only drive downhill

Problem solved!
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Old 01-04-2012, 03:24 PM   #37
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I just picked up a mod that gives me serious, real-world MPG gains:



A Corolla for my long commute to work. Saves me $11 per work day in gas.
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Old 01-04-2012, 03:34 PM   #38
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Originally Posted by jeffk42 View Post
I just picked up a mod that gives me serious, real-world MPG gains:



A Corolla for my long commute to work. Saves me $11 per work day in gas.
That's exactly the setup I want for my Corolla.

How was the install? Is it lifted? And what tires/wheels are you running on that bad boy?
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Old 01-04-2012, 04:30 PM   #39
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That's exactly the setup I want for my Corolla.

How was the install? Is it lifted? And what tires/wheels are you running on that bad boy?
Thanks, I got a good LOL with that one!
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Old 01-04-2012, 05:33 PM   #40
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That's exactly the setup I want for my Corolla.

How was the install? Is it lifted? And what tires/wheels are you running on that bad boy?
Hehe.
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Old 01-04-2012, 05:47 PM   #41
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I feel better now. Have heavy armor and heavy bumper and heavy 33 muds and regeared to 4.88 and get 15.4 in the city in a 3.8. I thought the 3.6 was suppose to get better mileage
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Old 01-04-2012, 05:58 PM   #42
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Originally Posted by rics1997 View Post
I feel better now. Have heavy armor and heavy bumper and heavy 33 muds and regeared to 4.88 and get 15.4 in the city in a 3.8. I thought the 3.6 was suppose to get better mileage
Complete myth, IMO. Maybe some '12ers will jump me for this, but I'm around 14.5mpg w/35's, heavy bumpers, and a bunch of interior weight...just over 1K miles. Manual. 3.73. We'll see when I change gearing, but I'm not optimistic.

Then again, I tend to drive like a carjacker.
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Old 01-04-2012, 06:35 PM   #43
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Originally Posted by kbwwolf

Complete myth, IMO. Maybe some '12ers will jump me for this, but I'm around 14.5mpg w/35's, heavy bumpers, and a bunch of interior weight...just over 1K miles. Manual. 3.73. We'll see when I change gearing, but I'm not optimistic.

Then again, I tend to drive like a carjacker.
I'm with ya. I felt the '12 drove better than the '11 for the SAME mpg not better.
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Old 01-04-2012, 06:42 PM   #44
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Use the cruise --- that is what "she" does in our '12 and she gets 18-20mpg. But she doesn't slow down for railroad crossings or snowy roads anymore.

But she has figured out how to shift in and out 4wd on the fly for the snow. When we got it a month ago she had no clue!!
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Old 01-04-2012, 06:48 PM   #45
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Your kidding right? You don,t actually think the 3.6 and the 3.8 get the same gas mileage, do you?

The Pentastar gets better gas mileage than the 3.8.

Why are some of you guys really fighting this 3.6 engine. It's a better engine.


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Old 01-05-2012, 07:11 AM   #46
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Originally Posted by RaiderRUBICON View Post
Your kidding right? You don,t actually think the 3.6 and the 3.8 get the same gas mileage, do you?

The Pentastar gets better gas mileage than the 3.8.

Why are some of you guys really fighting this 3.6 engine. It's a better engine.


AJ
I think the point is that 2 mpg in either direction means very little in the real world. Easily overcome by driving style. And that's especially true once you start modifying to the point of losing additional mpg.

I don't know of anyone "fighting" the 3.6. There's no need to create conflict where there is none.
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Old 01-05-2012, 07:25 AM   #47
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Quote:
Originally Posted by jeffk42

I think the point is that 2 mpg in either direction means very little in the real world. Easily overcome by driving style. And that's especially true once you start modifying to the point of losing additional mpg.

I don't know of anyone "fighting" the 3.6. There's no need to create conflict where there is none.
Exactly my point. I think the 3.6 has better drivability for almost the same MPG. I was .5 mpg different in the test drive on the 3.8 vs the 3.6, but the 3.6 seemed to drive better (more power, better accel )

Not saying the 3.8 is better on MPG, just saying its not this HUGE difference that most folks make it out to be
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Old 01-05-2012, 10:34 AM   #48
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If youre only averaging 14mpg, youre doing something wrong. Mine has ~1700 miles on it and Im getting around 18ish in mixed driving on winter gas (auto and 3.73s). Two weeks ago I got over 20, close to 21 on a 270mile drive from CNY to E-MA over the Berkshires on I-90 going around 70mph. This was with 2 adults, baby, dog and the back full of luggage and xmas presents.
This past weekend I went from MA to CT and back averaging around 20ish for over 150 miles. That also included a few miles down a dirt trail too.
I am 1000% happy with my MPGees and it will only get better once it breaks in a bit more and even better still when we swap back over to summer gas in the spring time. If you cant get over 15mpgs on your stock Jeep, stop lighting the tires up at every stop sign
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Old 01-05-2012, 11:10 AM   #49
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If youre only averaging 14mpg, youre doing something wrong. Mine has ~1700 miles on it and Im getting around 18ish in mixed driving on winter gas (auto and 3.73s). Two weeks ago I got over 20, close to 21 on a 270mile drive from CNY to E-MA over the Berkshires on I-90 going around 70mph. This was with 2 adults, baby, dog and the back full of luggage and xmas presents.
This past weekend I went from MA to CT and back averaging around 20ish for over 150 miles. That also included a few miles down a dirt trail too.
I am 1000% happy with my MPGees and it will only get better once it breaks in a bit more and even better still when we swap back over to summer gas in the spring time. If you cant get over 15mpgs on your stock Jeep, stop lighting the tires up at every stop sign
No, if you're lifted with larger tires, metal bumpers and other such modifications that increase drag and increase weight, 14mpg is well within the expected mileage.
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Old 01-05-2012, 11:16 AM   #50
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I did not buy my Jeep for the gas milage, but I would rather have more than less. Two things that will help no matter how you drive are: use all synthetic fluids. Engine, transmission, transfer case, and both differentials. I use Amsoil. The tire tread pattern makes a difference. When I run the SRA's it gets better fuel economy than when I run the BFG mud terrains. The BFG's look a lot better though and obviously work much better off road. You have to decide what is most important to you. Under no circumstances would I drive a Toyota, Honda, etc.
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Old 01-05-2012, 12:22 PM   #51
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No, if you're lifted with larger tires, metal bumpers and other such modifications that increase drag and increase weight, 14mpg is well within the expected mileage.
Obviously, but OP said he was stock


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Originally Posted by sergeoval8157 View Post
No mods. (yet) lol 100% stock. I only have 400 miles on it, I've heard u get better gas mileage once u break it in a bit. Been considering a lift and fatter tires, on avg how much will that decrease my avg miles/gallon
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Old 01-05-2012, 12:27 PM   #52
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I just picked up a mod that gives me serious, real-world MPG gains:



A Corolla for my long commute to work. Saves me $11 per work day in gas.
Buying a second car wil cost you way more then the little bit of gas you save. You should work in DC the way you manage money. You would never spend in years on gas what that RICER cost you. And to top it off, to be seen in a RICER!
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Old 01-05-2012, 12:35 PM   #53
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Buying a second car wil cost you way more then the little bit of gas you save. You should work in DC the way you manage money. You would never spend in years on gas what that RICER cost you. And to top it off, to be seen in a RICER!
At this point most of the depreciation on the car has already occurred. I can sell it in several months for nearly as much as I paid for it, if not more since I got the thing for way under the KBB estimate.

In the meantime, it saves me a little over $11 per day in gas. And that's ONLY for the commute, not for any other travel (which I do a lot of). The monthly cost of the car, plus insurance, plus gas comes out to way less than $11 a day.

I'm not stupid. There's no need to insult me, especially with only a limited understanding of all of the variables.
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Old 01-05-2012, 01:54 PM   #54
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Originally Posted by RaiderRUBICON
Your kidding right? You don,t actually think the 3.6 and the 3.8 get the same gas mileage, do you?

The Pentastar gets better gas mileage than the 3.8.

Why are some of you guys really fighting this 3.6 engine. It's a better engine.

AJ
I don't see this with my '07 and '12 Saharas. It is about the same. Could be I keep my foot in it more with the '12.
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Old 01-05-2012, 04:05 PM   #55
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I do mostly city driving and have had an 07 JKU and now have a 12 JKU.

07 X, auto, soft top with spacer lift and slightly bigger tires and 95k miles avg 14-15mpg.

12 Sahara, auto hard top bone stock - about 1500 miles - right now the computer mpg tracker says 13.8.

I try not to accelerate very quickly most of the time. However, the 2012 jeep got about 21-22 on the highway trip I took from Dallas to Houston doing 70.
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Old 01-05-2012, 07:46 PM   #56
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Got my JKU this past Tuesday, 1/3, and now have approx 100 miles on it. As per the the counter, i'm getting 16.8 mpg and thats from the full tank the dealer gave me to a little above half tank today.

I noticed when I shift sometimes its flashes "eco" and stays sometimes when driving and not getting on it. I think it makes me get better mpg?
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Old 01-17-2012, 03:31 PM   #57
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FYI: My MPG isn't too bad after 5000 miles I'm averaging 21.8 Hwy and 18.5 Cty and I do about 80% city / trail driving.
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Old 01-18-2012, 09:32 AM   #58
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I did a comparison on heavy foot vs light foot in my old ford festiva. Each test was to and from work 5 times with 1 trip to and from town. Each test took me 1 week.

week 1. I drove the festiva foot to the floor (kinda have to). I did not try to time the stop lights. I did not try any hint or tip i could find. I drove the car as fast as it would go till i hit the speed lmit then would hold that speed. I would hold my speed till i had to stop.

week 2. i drove the festiva as slow as i could but still got it to the speed limit. I tried to time the lights. I tried to drive behind larger vehicles. I used neutral and downshifting as much as i could.

Week 1 i used a full tank of gas. Week two i used less then a half tank of gas. Week 2 saved me 50-60% in gas.

If you want better MPG then just adjust the way you drive.
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Old 02-23-2012, 09:35 PM   #59
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gas millage

You don't drive JK for the gas millage!!!
Buy funny car for that!
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Old 03-04-2012, 01:49 PM   #60
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Looks like the 3.8 owners just downtalk our engine because they know its better and there just haters!

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