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Unread 07-27-2012, 03:54 PM   #1
igreek18
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2012 jeep compass mpg

Hello new to the forums. I love my new 4x4 sport 2012 jeep compass but so far gas mileage is not what advertised. I do understand new engines eat up more gas until they break in. I would just like Alittle more info on whats going on. First tank was avg at 17 mpg 70 percent highway driving.

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Unread 07-27-2012, 04:05 PM   #2
FujativeOCR
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Mine has 12,000 miles and still gets 16-17 city.

Do you have an Off-Road package? That hurts it alot. (if its available on compass, on Patriot it does)

Anyway in small print on the window sticker it says 20 city expected range 15-25, highway 23, expected range, 18-28. Or something like that. I dont think anybody's gets the advertised city mileage.
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Unread 07-27-2012, 04:12 PM   #3
igreek18
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No it's just 4x4 not trail rated i do think that my mpg is better on this second tank, I think it's around 20-21 but will a performance
Chip and intake help?
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Unread 07-27-2012, 04:24 PM   #4
FujativeOCR
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I think I just read an MPG myth thing somewhere the other day that said clean air filters don't help mpg, because the computers adjust everything accordingly. I'd imagine that is the case with a CAI too. Chips I don't know but I think the tranny is the weakest link. You got CVT yeah?
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Unread 07-27-2012, 04:38 PM   #5
igreek18
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Yeah cvt but I keep it under 3k rpms
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Unread 07-27-2012, 04:58 PM   #6
FujativeOCR
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Me too. If I keep it under 2k I might get 18.
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Unread 07-27-2012, 04:59 PM   #7
FujativeOCR
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Supposedly the computers take a couple tanks to learn your driving style. Sounds like BS to me but thats what they say. Could help. Yours should get 1-2 better than mine.
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Unread 07-27-2012, 07:01 PM   #8
Busmaster2
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I take excellent care if my 011 compass. Nonetheless, the mileage has gone from 21 22 to 18mpg. Filters are all clean and resetting the computer has dine nothing to help.
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Unread 07-27-2012, 07:29 PM   #9
FujativeOCR
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Ive driven 8 miles on a new tank. 15.5 mpg so far under 2,000 rpm. Oh well.
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Unread 07-28-2012, 01:26 AM   #10
igreek18
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Hopefully it will "learn" fast I'd be very happy with 25 mpg but oh well. Thanks fellow jeepers!
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Unread 07-28-2012, 06:59 AM   #11
Gramps
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Disconnecting the battery will help it learn faster because it resets the computer. If it was test driven by others it hasn't learned your habits yet. When I was doing a 30 mile trip I was up to about 25 mpg, sometimes 26. Now since I'm doing short 3 mile trips I'm down to about 21 - 22mpg.
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Unread 07-28-2012, 09:57 AM   #12
FujativeOCR
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*Don't forget to reconnect it when you're ready for it to start learning again.
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Unread 07-28-2012, 10:01 AM   #13
FujativeOCR
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I never understood why cars try and learn your habits anyway. Does everyone out there drive exactly the same all the time? I sure don't. There's those times when you're trying to get your Patriot to break the 20 mpg barrier, and other times when you are stuck in a series of red lights and trying to get on the more desireable green pattern. You can't drive the same and achieve both goals.
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Unread 07-29-2012, 09:48 PM   #14
jasonwe
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My wife's first tank on her new 2012 Jeep Compass 4x4 Sport, with 25% highway and 75% city, was 20.6 MPG. Thats with 89 octane, 10% ethanol. She has the CVT as well.

Ethanol gas will hurt you (10% or otherwise), although I understand how some states have 10% or more in every grade. Luckily out here in South Dakota, 89 octane is the only grade with 10% ethanol. 87 and 91 octanes are pure gas. In the 2001 Ram I used to have, I would get 1 to 2 MPG better without the 10% ethanol, and that was a big gas guzzling 5.9L V8. In the Dakota I have now, I get 2-3 MPG better if I do not use 10% ethanol. For that reason, and others, I do not use ethanol gas unless I absolutely have to. Have not owned the Compass long enough to tell you the different in MPGs with that, only reason it got 89 octane/10% this time is because the dealership filled it up for us as we were signing the paperwork.
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Unread 07-29-2012, 11:57 PM   #15
FujativeOCR
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Maybe Ethanol then is the real reason I only get 16-17? You can't buy non-ethanol gas anywhere in California save for like 5 stations a few hundred miles away from here.

Do car manufacturers and the EPA calculate fuel mileage numbers on real gas or E10?
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