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.
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?
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.
Artificial intelligence is no substitute for natural stupidity
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.
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.
[COLOR="Silver"][B][SIZE="3"]2012 Jeep Compass Sport 4x4[/SIZE][/B][/COLOR]
[I]2.4L I4, CVT II, Freedom Drive I[/I]
[COLOR="DarkSlateGray"][B][SIZE="3"]2010 Dodge Dakota Quad Cab 4x4[/SIZE][/B][/COLOR]
[I]4.7L V8, 545RFE, Big Horn Edition[/I]