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Unread 07-05-2010, 05:12 PM   #1
quag1509
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12 mpg on highway??

I just traded my Unlimited 6spd Sahara for a Unlimited automatic Rubicon a couple of weeks ago and went on a road trip this weekend and I got only 12 mpg on the highway. WTH? In my old Jeep I averaged 22mpg. I know that im not going to get the same in the Rubicon but that is a huge difference. Is this normal?

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Unread 07-05-2010, 05:14 PM   #2
In_Hollywood01
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Quote:
Originally Posted by quag1509 View Post
I just traded my Unlimited 6spd Sahara for a Unlimited automatic Rubicon a couple of weeks ago and went on a road trip this weekend and I got only 12 mpg on the highway. WTH? In my old Jeep I averaged 22mpg. I know that im not going to get the same in the Rubicon but that is a huge difference. Is this normal?
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Unread 07-05-2010, 05:28 PM   #3
OregonVette
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When you say "highway" what exactly do you mean speed wise. In my corvette, going down the highway means 75-78mph.
Going down the highway in my 4dr Jeep if I keep it at 55-58 I'll get 22mpg
60-64 around 18
Over 68mph maybe 15-17
Over 70-ish 12-14

These things are too heavy, too boxy, too unaerodynamic for the dinky 3.8 mill.
Bag gas milage. Is your new rubi a JKU and is it lifted?
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It's hard to give you good advice at this point. It's almost like you're saying, "I want to have sex, but don't want to get her pregnant. I can't afford condoms, so for now I just want to use Saran Wrap. What brand would you recommend?"
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Unread 07-05-2010, 05:31 PM   #4
McKBrew
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The lemon post was very useful.....

More information on your driving conditions and how you were calculating the mpg and you'll get additional assistance.

My numbers are somewhat in line with Oregonvettes, but I'm not driving a rubi. (Still don't think gearing is going to make that much of a difference.)
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Unread 07-05-2010, 05:44 PM   #5
quag1509
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It is a JKU and its stock excpet for Rugged Ridge bumpers front and rear. I was driving with the cruise control on at 75 the whole way and based it off dividing the miles I traveled until near empty of 260 by 22.5. I use to drive the same speed in my Sahara and never went below 19mpg.
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Unread 07-05-2010, 06:09 PM   #6
Charles
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I got close to that once with a headwind for 300 miles. Something is wrong if you have stock tires and there was no headwind. And...you got 11.5 MPG. At least you were being optimistic.
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Unread 07-05-2010, 06:19 PM   #7
Charles
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I'm curious, where do you wheel your new Rubi in Pensacola, Florida? I have the potential to live in Florida at some point and I'm terrified that I'll spend copious amounts of money on my Jeep and end up in Florida with no where to wheel. Are my concerns unwarranted?
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Unread 07-05-2010, 07:02 PM   #8
Rafi
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theres a lot of mud in florida.
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Unread 07-05-2010, 07:08 PM   #9
Charles
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Originally Posted by Rafi View Post
theres a lot of mud in florida.
I don't do mud.
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Unread 07-05-2010, 07:36 PM   #10
Prot
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Originally Posted by cbloyer81 View Post
I don't do mud.
There is also sand, and ummm oil.

You divided by 22? Was your tank bone dry? Go by the amount of gas it took to fill up for more accurate results. Are the tires stock? Have you checked your speedometer accuracy?

Keeping it at 65 or less will improve the fuel economy drastically.
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Unread 07-05-2010, 07:38 PM   #11
Vin
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and back to the OP...where did you get the 22.5 from? Is that the amount of gas you refilled or are you going by your tank size?
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Unread 07-05-2010, 07:55 PM   #12
10rubi
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Iím new to Jeeps but not to 4x4s, my guess besides the obvious would be gearing. The Rubicon has 4.10s do you know what the other was? I know my girls last Jeep a 09 X Unlimited got better mileage as well and it had higher gears.

Just thinking out loud.
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Unread 07-05-2010, 08:14 PM   #13
Shalamar
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I just did a roadtrip this weekend in my Rubi Unlimited. Got 19+ MPG on the highway.
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Unread 07-05-2010, 08:35 PM   #14
waterboarder
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Originally Posted by quag1509 View Post
I got only 12 mpg on the highway.
That's about what I get - 12, 13MPH.
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Unread 07-05-2010, 08:39 PM   #15
newjk
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you didn't say if your ruby is brand new. if it is it needs to loosen up a bit. my 08 jku sahara auto 3.73 gears avg. 21.6 nj to fla. speeds between 55 and 85mph. milage was hand calc. try dividing gallons added by miles driven, not just the size of the tank. if you find your milage remains that poor, check with dealer.
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