Crazy poor gas mileage. Am I outside the norm? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > JK Jeep Wrangler Forum > JK General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 02-11-2014, 06:49 PM   #1
Newb
 
Join Date: Feb 2014
Posts: 14
Crazy poor gas mileage. Am I outside the norm?

Hi all, first post here...

I purchased a new 2013 Jeep Rubicon Unlimited last July w/ auto trans and 3.73 rear. Initially when driving it, I was seeing ~15mpg around town (I live in downtown Minneapolis) which I expected for the break-in period and mostly city driving. However, now that I'm closing in on 5k miles, it just seems to be getting worse and worse.

A little more than a week ago I decided to run it near fumes. I then splurged on a full tank of premium gas at the local station solely because it's not an ethanol blend, and then reset my mileage calculator.

I'm now nearing the end of that tank, and I'm sitting at ~11.5 MPG

I sporadically use 4WD when we get a good snow storm, but generally I keep it in 2WD. For comparison's sake, my 2004 Jeep Liberty Limited was getting ~17-18 MPG with the same sorta driving.

Am I way outside the norm? Is there anyone else on here who does mostly city driving that is seeing anything close to this? I can't wait to hit some trails with this thing in the spring, but in the mean time this is bugging the hell outta me! Any feedback is appreciated!!!

-James

hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:01 PM   #2
Jeeper
 
avi8or's Avatar
 
Join Date: Nov 2013
Location: MO
Posts: 63
Was this a single tank of 11.5 MPG or a downward trend ending here? Did you do a lot of idling somewhere like a long wait at a drive-thru on this tank? How much snow/4x4 driving was on this tank? Those numbers don't sound unreasonable given the recent temperatures and the amount of city driving you do.

An obvious question...are you sure you calculated the tank correctly?

avi8or is offline   Quote Quick Reply
Old 02-11-2014, 07:04 PM   #3
Jeeper
 
Huskie's Avatar
 
Join Date: Jan 2014
Location: Rochester, MN
Posts: 31
Same situation here, James. have only racked up 700 miles so far, and it's 'city' driving here in Rochester. Averaging around 12 to 13 mpg, with manual calculations. Also noticed the needle does not quite get to Full. Heading out of town next week, so we'll see if some Interstate driving helps the mileage.
Huskie is offline   Quote Quick Reply
Old 02-11-2014, 07:08 PM   #4
Supporting Member

WF Supporting Member
 
keviper1's Avatar
 
Join Date: Sep 2013
Location: VA
Posts: 2,239
City driving is gonna be pretty bad on the Wrangler. Add in the fact that it's winter and crap winter blend gas and your numbers aren't too far off. When I had my 08' in Chicago I'd get about 14-15 with a mix of 70% town and 30% highway.

The whole Premium fuel (even non ethanol) is kinda a load of horse crap, plus Premium can actually burn quicker and give you less MPG...I may have stated that incorrectly (burn quicker), but you get the idea.

If someone has seen research or can correct me on the Premium, feel free to get me learned

I don't think it's far off though, I'd wait for the weather to warm up and keep an eye on everything.
keviper1 is online now   Quote Quick Reply
Old 02-11-2014, 07:10 PM   #5
Jeeper
 
Join Date: Aug 2013
Location: Ohio
Posts: 221
I'm chalking my MPGs up to the Rubicon being a total fat ace. The 2 door rubicon is almost 350 lbs heavier with a sport, and 4.1 gears vs 3.21 certainly aren't helping with gas mileage. Not to mention I've already added 100 lbs of stuff. I see between 14 and 15.5 in city, 17-18.5 on the highway in mine.
__________________
2014 Flame Red JK Rubicon
Rexenator is offline   Quote Quick Reply
Old 02-11-2014, 07:11 PM   #6
Newb
 
Join Date: Feb 2014
Posts: 14
@avi8or, It's been a downward trend since buying it, and I didn't manually calculate it with the last tank. I just reset the dash mileage calculator and have been watching it since. I'm going to do a few tanks of manual calculation after this tank is up. No real instances of idling other than maybe a few minutes total of remote starting in the cold. I probably only did ~5 miles of 4x4 on this tank.

@Huskie, thanks for the input! Some how makes me feel better that I'm not the only one

I'm mostly just shocked due to the difference from my Jeep Liberty, which I drove very similarly in that I'd use the 4x4 when we got snow or if the roads were especially icy. All impressions prior to buying the Wrangler were that the fuel mileage should be similar if not better in the Wrangler, but that is obviously not the case!
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:17 PM   #7
Jeeper
 
Plasticpirogue's Avatar
 
Join Date: Jul 2012
Posts: 500
Quote:
Originally Posted by hardwickj View Post
All impressions prior to buying the Wrangler were that the fuel mileage should be similar if not better in the Wrangler, but that is obviously not the case!
Don't know where that impression came from.......
Plasticpirogue is offline   Quote Quick Reply
Old 02-11-2014, 07:19 PM   #8
Newb
 
Join Date: Feb 2014
Posts: 14
@keviper1 thanks! Actually the higher octane in premium gas should only prevent engine knock in higher perf/compression engines. That's essentially meaningless for any stock Wrangler motor. I was just going out of my way to get a non-ethanol blend which is everywhere here in Minnesota. But you're probably right about the winter blends. I've no understanding of what goes into that...
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:21 PM   #9
Newb
 
Join Date: Feb 2014
Posts: 14
Quote:
Originally Posted by Plasticpirogue View Post
Don't know where that impression came from.......
@Plasticpirogue, right here Compare Side-by-Side
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:32 PM   #10
Jeeper
 
Plasticpirogue's Avatar
 
Join Date: Jul 2012
Posts: 500
That's not a Rubi, but a Sport and I can guarantee it would have the standard 3.21 gears. That's a BIG difference. The Rubi is slightly heavier, wearing higher rolling resistance tires, with a much lower final drive ratio. I drive my Sport S JK (auto, 3.21s, 255 SR/As) about 80% City/20% Interstate and consistently average 16.5-16.9. I am about to turn over 25K on my 2013. If I am on the Interstate running 75-80 with a long fishing kayak on top, I can still get 19-20mph.
Plasticpirogue is offline   Quote Quick Reply
Old 02-11-2014, 07:34 PM   #11
Newb
 
Join Date: Feb 2014
Posts: 14
Quote:
Originally Posted by Plasticpirogue View Post
That's not a Rubi, but a Sport and I can guarantee it would have the standard 3.21 gears. That's a BIG difference. The Rubi is slightly heavier, wearing higher rolling resistance tires, with a much lower final drive ratio...
That's a great point. So on the bright side...if I was going to slightly lift this and put ~33-34" tires on this thing, my mileage wouldn't get too much worse?
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:36 PM   #12
Supporting Member

WF Supporting Member
 
keviper1's Avatar
 
Join Date: Sep 2013
Location: VA
Posts: 2,239
Quote:
Originally Posted by Plasticpirogue View Post
That's not a Rubi, but a Sport and I can guarantee it would have the standard 3.21 gears. That's a BIG difference. The Rubi is slightly heavier, wearing higher rolling resistance tires, with a much lower final drive ratio. I drive my Sport S JK (auto, 3.21s, 255 SR/As) about 80% City/20% Interstate and consistently average 16.5-16.9. I am about to turn over 25K on my 2013. If I am on the Interstate running 75-80 with a long fishing kayak on top, I can still get 19-20mph.
That's good mileage for going 80 and a kayak on top! Nice...
keviper1 is online now   Quote Quick Reply
Old 02-11-2014, 07:37 PM   #13
Supporting Member

WF Supporting Member
 
keviper1's Avatar
 
Join Date: Sep 2013
Location: VA
Posts: 2,239
Quote:
Originally Posted by hardwickj View Post
That's a great point. So on the bright side...if I was going to slightly lift this and put ~33-34" tires on this thing, my mileage wouldn't get too much worse?
Ha, no it shouldn't affect it too much. Although you'd probably want to re-gear at that point, and then you're really F on MPG
keviper1 is online now   Quote Quick Reply
Old 02-11-2014, 07:41 PM   #14
Jeeper
 
Cdwright's Avatar
 
Join Date: Mar 2013
Posts: 1,082
Quote:
Originally Posted by hardwickj View Post
Hi all, first post here... I purchased a new 2013 Jeep Rubicon Unlimited last July w/ auto trans and 3.73 rear. Initially when driving it, I was seeing ~15mpg around town (I live in downtown Minneapolis) which I expected for the break-in period and mostly city driving. However, now that I'm closing in on 5k miles, it just seems to be getting worse and worse. A little more than a week ago I decided to run it near fumes. I then splurged on a full tank of premium gas at the local station solely because it's not an ethanol blend, and then reset my mileage calculator. I'm now nearing the end of that tank, and I'm sitting at ~11.5 MPG I sporadically use 4WD when we get a good snow storm, but generally I keep it in 2WD. For comparison's sake, my 2004 Jeep Liberty Limited was getting ~17-18 MPG with the same sorta driving. Am I way outside the norm? Is there anyone else on here who does mostly city driving that is seeing anything close to this? I can't wait to hit some trails with this thing in the spring, but in the mean time this is bugging the hell outta me! Any feedback is appreciated!!! -James
JK Rubicon with 4.10 gears and yes gas mileage is about yours or worse. The liberty is more aerodynamic and I am guessing lighter.
Cdwright is online now   Quote Quick Reply
Old 02-11-2014, 07:41 PM   #15
Newb
 
Join Date: Feb 2014
Posts: 14
I'm completely bewildered that Jeep doesn't offer a diesel option for this thing stateside. I'd gladly pay the premium just for feeling like I'm being a *bit* friendlier to the environment as well as putting less money in the pockets of nations who tend to not like us...

Thanks a ton for all the info guys!
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:45 PM   #16
Jeeper
 
Join Date: Feb 2012
Location: Mongolia
Posts: 99
at this time of year, 2013jku sahara running on euro standard AE92 averaging about 27L/100km which i believe is close to 8-9 US MPG, in notorious Ulaanbaatar driving, on the inter province roads however is about 15L/100km at around 15MPG.
gantulga is offline   Quote Quick Reply
Old 02-11-2014, 07:48 PM   #17
Newb
 
Join Date: Feb 2014
Posts: 14
Quote:
Originally Posted by gantulga View Post
at this time of year, 2013jku sahara running on euro standard AE92 averaging about 27L/100km which i believe is close to 8-9 US MPG, in notorious Ulaanbaatar driving, on the inter province roads however is about 15L/100km at around 15MPG.
Northern Mongolia?! Do you stick out like a sore thumb with that thing? That's awesome!
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 07:59 PM   #18
Jeeper
 
trailless's Avatar
 
Join Date: Jan 2014
Location: Tennessee
Posts: 559
Does non ethanol come in an octane rating higher then 87?
trailless is offline   Quote Quick Reply
Old 02-11-2014, 08:07 PM   #19
Supporting Member

WF Supporting Member
 
keviper1's Avatar
 
Join Date: Sep 2013
Location: VA
Posts: 2,239
Quote:
Originally Posted by hardwickj View Post
I'm completely bewildered that Jeep doesn't offer a diesel option for this thing stateside. I'd gladly pay the premium just for feeling like I'm being a *bit* friendlier to the environment as well as putting less money in the pockets of nations who tend to not like us...

Thanks a ton for all the info guys!
Your wish will come true eventually. $5k premium currently (Jeep Cherokee). There is an interview on the web, and someone posted it here of the CMO of Fiat discussing the next gen Wrangler. In that video he drops a couple good hints that the diesel is coming.

US standards on diesel engines are insane compared to the rest of the world, which is why we don't have it here yet. I believe all the diesels that go overseas are manufactured in OH and just shipped over, so they can do it, it's just all the political bs that they need to clear up.

$5k is a lot of money though! Don't know that I would pay that premium...
keviper1 is online now   Quote Quick Reply
Old 02-11-2014, 08:12 PM   #20
Jeeper
 
Join Date: Feb 2012
Location: Mongolia
Posts: 99
Quote:
Originally Posted by trailless View Post
Does non ethanol come in an octane rating higher then 87?
Whatever the Russians use, we use. we do have AE95 and AE98 but i believe my new (eventhough it took me half a year worth wait during shippment) 3.6 can handle US spec 87 regular. i have never been to US personally so i don't know what are the actual grades other than mentions in this forum...
i do drive diesel land cruiser and the fuel quality here is awful and i am blessed by jku as no more diesel problems in the cold...
gantulga is offline   Quote Quick Reply
Old 02-11-2014, 08:12 PM   #21
Newb
 
Join Date: Feb 2014
Posts: 14
@keviper1, yea, but they already have a power plant that meets regulations in the Jeep GC option. Not sure why they aren't offering it already in the Wrangler!

I'd gladly pay it just for the sake of not having to fill up so damn often, or being able to go on longer/rougher trail rides without having to bring along jerry cans.
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 08:16 PM   #22
Jeeper
 
spinlock's Avatar
 
Join Date: Sep 2013
Location: 37.9° N, 121.7° W
Posts: 3,366
Quote:
Originally Posted by keviper1 View Post
Your wish will come true eventually. $5k premium currently (Jeep Cherokee). There is an interview on the web, and someone posted it here of the CMO of Fiat discussing the next gen Wrangler. In that video he drops a couple good hints that the diesel is coming.

US standards on diesel engines are insane compared to the rest of the world, which is why we don't have it here yet. I believe all the diesels that go overseas are manufactured in OH and just shipped over, so they can do it, it's just all the political bs that they need to clear up.

$5k is a lot of money though! Don't know that I would pay that premium...
It's $6.5K if it requires the same transmission as the one required in the GC.

I'm all for green, although it's questionable that diesel is any shade of green but the economics are not good.
__________________
"A man has got to know his limitations."
H. Callahan
spinlock is offline   Quote Quick Reply
Old 02-11-2014, 08:23 PM   #23
Jeeper
 
jadmt's Avatar
 
Join Date: Sep 2012
Location: missoula
Posts: 6,294
Quote:
Originally Posted by trailless View Post
Does non ethanol come in an octane rating higher then 87?
around here the only non ethanol you can get in the winter is 91-93 octane.
jadmt is offline   Quote Quick Reply
Old 02-11-2014, 08:28 PM   #24
Newb
 
Join Date: Feb 2014
Posts: 14
Quote:
Originally Posted by jadmt View Post
around here the only non ethanol you can get in the winter is 91-93 octane.
For the most part it's the same around here. I have a couple motorcycles and the shitty ethanol blends cause the tanks to expand/balloon/warp over time. Dealer replaced one tank for me under warranty but said the same will happen again if I don't avoid the blends. Ever since then I've been paying closer attention.
hardwickj is offline   Quote Quick Reply
Old 02-11-2014, 08:36 PM   #25
Jeeper
 
wassup8687's Avatar
 
Join Date: Apr 2012
Posts: 1,979
Not sure where you're located but keep in mind that the extreme cold temperatures will have a negative impact on fuel mileage.

Make sure your tire pressure is where it should be.
wassup8687 is offline   Quote Quick Reply
Old 02-11-2014, 08:42 PM   #26
Jeeper
 
Cdwright's Avatar
 
Join Date: Mar 2013
Posts: 1,082
Quote:
Originally Posted by keviper1 View Post
Your wish will come true eventually. $5k premium currently (Jeep Cherokee). There is an interview on the web, and someone posted it here of the CMO of Fiat discussing the next gen Wrangler. In that video he drops a couple good hints that the diesel is coming. US standards on diesel engines are insane compared to the rest of the world, which is why we don't have it here yet. I believe all the diesels that go overseas are manufactured in OH and just shipped over, so they can do it, it's just all the political bs that they need to clear up. $5k is a lot of money though! Don't know that I would pay that premium...
Get one and run it on fryer oil. Booyah.
Cdwright is online now   Quote Quick Reply
Old 02-11-2014, 09:35 PM   #27
Jeeper
 
foolproof's Avatar
 
Join Date: Jan 2014
Location: Kingsville, MO
Posts: 157
Another point to ponder on fuel economy: My 2005 Mustang GT gets worse mileage in the winter time, and at first I attributed it to "winter blend" fuels. Then, as I thought about it, it dawned on me!

Our cars use a Mass Air Flow (MAF) sensor to figure out how much air is going into the engine, right? Well, in the winter time, air is colder and therefore denser. It just makes sense, then, that our computers are adjusting the amount of fuel to maintain the proper air/fuel ratio. Denser air means more air, which in turn requires more fuel.

Did you ever wonder why your car seems to make more power in the winter time? This would explain it.

My guess is that your mileage will start going up as it warms up some. Mine, in the mean time, is going lower and lower because we haven't been above freezing (hardly above 15 degrees F) for about two weeks! I look forward to warmer weather to get better mileage.
foolproof is offline   Quote Quick Reply
Old 02-11-2014, 09:46 PM   #28
Jeeper
 
06Bannywhip's Avatar
 
Join Date: Feb 2014
Location: South Jersey
Posts: 41
My 06 Wrangler Unlimited has never more than 250 miles to the tank. Is that normal?
06Bannywhip is offline   Quote Quick Reply
Old 02-12-2014, 06:57 AM   #29
Jeeper
 
Join Date: Feb 2014
Location: Easton Ma, 02356 and Laconia NH 03246
Posts: 16
Images: 1
First tank of gas on a 14 JKU was 19.2 and that was 50/50 town and hway.
streetjeep2014 is offline   Quote Quick Reply
Old 02-12-2014, 07:02 AM   #30
Jeeper
 
Cdwright's Avatar
 
Join Date: Mar 2013
Posts: 1,082
Better off to fill the tank when it is empty and enjoy the Jeep. If it gets too bad, you could trade it in.

Cdwright is online now   Quote Quick Reply
Reply

Tags
mileage

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




» Featured Product

All times are GMT -5. The time now is 02:27 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC