Gas guzzler? - Jeep Compass Forum
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post #1 of 28 Old 02-19-2019, 03:43 PM Thread Starter
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Unhappy Gas guzzler?

Hi everyone!
Im new to this site, and of course i recently just purchased a 2018 Jeep Compass Trailhawk..going on 2 weeks with it. One major issue/question...: anyone else having to fuel up every 3 days? Im noticing that with mine..i have to gas up every 3 days...4 if i'm lucky. I drive 40 min for work and i end up using a quart..and another just to go back home. Is this normal..am i over thinking?
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post #2 of 28 Old 02-19-2019, 04:25 PM
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Excessive oil consumption is an issue that has been frequently discussed in this forum. Your fuel consumption seems normal to me. I drive 50 miles/day and usually fuel up after the 3rd day. My average fuel economy was 26 MPG average. Given the small 13.5 gallons fuel tank, this seems reasonable.
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post #3 of 28 Old 02-19-2019, 06:25 PM Thread Starter
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I'm only getting 20.2 MPG
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post #4 of 28 Old 02-20-2019, 02:42 AM
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Clarissa, I don't know how you drive or if you're in city traffic, but your MPG seems too low. Most of my driving is highway at 60-65 MPH and I'm getting 30.5 overall since I bought mine. I've got 27,000 miles on it now. Until November I was getting 31.5 but since putting on my snow tires, winter blend fuel, and sub-zero temperatures I've only been getting 29MPG so that makes for my 30.5 average MPG.

As above, if you're doing a lot of aggressive driving in the city, then maybe 20MPG is all you can expect.
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post #5 of 28 Old 02-20-2019, 03:57 AM
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Use 5W20 and your oil consumption will drop
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post #6 of 28 Old 02-20-2019, 10:42 AM
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Quote:
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Use 5W20 and your oil consumption will drop
What is your statement based on?
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post #7 of 28 Old 02-20-2019, 11:24 AM
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My oil consumption has greatly improved since 20,000 miles. I'm getting about 3000/qt now. May just be that this engine has a super-long break-in period.
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post #8 of 28 Old 02-20-2019, 02:36 PM
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I'm getting ~20-21 MPG w/ the 6-speed. However my commute to work is about a half mile so i am very satisfied with what i'm seeing (was getting 12-13mpg in my Taurus). Even non-commute driving, I normally don't have a drive much greater than 3-5 miles away so my MPG is based on almost no highway driving and a fairly heavy foot.

I did buy the Compass "out-of-town" and saw about 29 mpg between the dealership and my house. This was on I-75 with speeds around 75mph.

I will say that the smaller gas tank does lead to some frequent fill ups though. My wife's Escape has a pretty small tank complained about frequent fill ups.

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post #9 of 28 Old 02-20-2019, 02:47 PM
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i get 36+ un the summer and @ 34 in the winter.
highway driving

city driving drastically reduces it

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post #10 of 28 Old 02-21-2019, 03:15 AM
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The all terrain tires on the trailhawk likely reduce the mileage compared with traditional on road tires. The off road tires, additional ground clearance and extra weight penalize fuel economy vs other compasses but the trade-off is capability. That said, the gas tank is not particularly large and gas is quite cheap right now (the gas component vs the tax component).

Also, double check to see if your tires are properly inflated. With temperatures dropping, it's likely that the tires need a bit more pressure
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post #11 of 28 Old 02-21-2019, 05:03 PM
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The all terrain tires on the trailhawk likely reduce the mileage compared with traditional on road tires. The off road tires, additional ground clearance and extra weight penalize fuel economy vs other compasses but the trade-off is capability. That said, the gas tank is not particularly large and gas is quite cheap right now (the gas component vs the tax component).

Also, double check to see if your tires are properly inflated. With temperatures dropping, it's likely that the tires need a bit more pressure
I get ~30MPG on on trail hawk going at 60MPH. I dont think they will influence it that much, maybe 1-2 MPGs.
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post #12 of 28 Old 02-22-2019, 03:20 AM
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i don't think i broke over 21 mpg.... my old Land Rover LR2 with v6 got 23mpg

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post #13 of 28 Old 02-22-2019, 02:39 PM
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Question 2018 Jeep Compa Latitude 4X4 with 9 speed

I have recently bought my 2018 Jeep Compass Latitude 4X4 w/ 9 speed Trans. Right now I drive about 30-40 miles a day mostly Highway and right now I average between 20-22 MPG depending if I have cruise on or not and what speed I am going. I have done a couple self tests if I go between 60-67 MPH it will end up in 8th gear and be under 2k RPM'S which will get me better MPG. If I go above 70 MPH it will be sitting right around 2k RPM'S and does not get the best MPG unless you manually shift it in 9th because it wont go into 9th gear automatically. From what I have noticed that 8th gear and 9th have like no power (example) ( I set my cruise at 77 MPH once it is at a cruising 77 MPH it will shift in 8th gear no 9th and when the speed decreases the engine will down shift in 7th or 6th to get the power to get back up to speed) Personally I think the engine is under powered considering what I am going through or there is something wrong with the transmission. I should be getting more MPG than 20-22 MPG on highway. What do you guys think?
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post #14 of 28 Old 02-22-2019, 03:14 PM
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try 55-60mph with cruise control

thats my daily commute, and gives the best mpg

above 60 it starts dropping

colder weater - it drops
high winds - it drops

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post #15 of 28 Old 02-22-2019, 04:10 PM
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Yea I hear you on that 55-60 MPH would help on MPG but considering its highway I cant really be going 55-60 MPH that's 15 under normal speed limit.
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post #16 of 28 Old 02-22-2019, 04:16 PM
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true, mine is posted at 55

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post #17 of 28 Old 02-22-2019, 04:20 PM
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Good idea though. By what I was saying what do you think. Does it sound like my compass is running normally or might be something to look into?
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post #18 of 28 Old 02-22-2019, 04:23 PM
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sound normal to me

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post #19 of 28 Old 02-22-2019, 04:27 PM
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ok well that's at least some relief. It just didn't add up since I was getting basically 20-22 MPG which is city MPG for mostly highway but considering I drive at higher speeds means less MPG. Its just that 9th gear had me question things since it don't go even in 9th.
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post #20 of 28 Old 02-22-2019, 10:01 PM
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ok well that's at least some relief. It just didn't add up since I was getting basically 20-22 MPG which is city MPG for mostly highway but considering I drive at higher speeds means less MPG. Its just that 9th gear had me question things since it don't go even in 9th.
9th is a decoration. I've got to be going over 60 to even get it into 9th with autostick. I do that once in a while just to keep it working, but even at 70MPH its lugging in 9th.
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post #21 of 28 Old 02-24-2019, 01:44 AM
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ok well that's at least some relief. It just didn't add up since I was getting basically 20-22 MPG which is city MPG for mostly highway but considering I drive at higher speeds means less MPG. Its just that 9th gear had me question things since it don't go even in 9th.
9th gear is mainly intended for the EU market where highway speed limits are much higher. I have seen the car to automatically shift to 9th while I was driving across Montana at around ~90 MHP (Montana highway speed limit is 80 MPH +10%, but cops tolerate 90 as well). Shifting happened around ~85 MPH on a completely flat road and the air temperature was 85F .During winter, air drag will be higher and it might not shift. At lower speeds, if you shift to 9th manually, MPG drops because it causes the RPM to drop below the limit where the engine can generate enough power to maintain that speed, so the engine goes full throttle but still stall (and you lose MPG). It is also normal for 8th and 9th gear to feel like they have no power, those are overdrive gears intended for cruising, they wont allow much acceleration.
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post #22 of 28 Old 02-24-2019, 02:00 AM
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It is also normal for 8th and 9th gear to feel like they have no power, those are overdrive gears intended for cruising, they wont allow much acceleration.
Actually5th is 1:1 ratio, so really we have four overdrives.

I've pretty much laid off the autostick. I might use it for braking, but the gap between 5 and 4 is huge and pretty much negates the effect. On the highway it switches between 7 and 8 depending on the grade, or even down to 6 or 5 on hills. My MPG seems to be better if I don't play with it.
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post #23 of 28 Old 02-25-2019, 02:01 PM Thread Starter
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Clarissa, I don't know how you drive or if you're in city traffic, but your MPG seems too low. Most of my driving is highway at 60-65 MPH and I'm getting 30.5 overall since I bought mine. I've got 27,000 miles on it now. Until November I was getting 31.5 but since putting on my snow tires, winter blend fuel, and sub-zero temperatures I've only been getting 29MPG so that makes for my 30.5 average MPG.

As above, if you're doing a lot of aggressive driving in the city, then maybe 20MPG is all you can expect.
@Jasmine
I drive between 31-50miles everyday for work, mainly highway 70-75mph. I rarely do any city driving. I did notice my mpg go up a bit...now at 21.4mpg with 6000 miles on it
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post #24 of 28 Old 02-25-2019, 08:30 PM
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@Jasmine
I drive between 31-50miles everyday for work, mainly highway 70-75mph. I rarely do any city driving. I did notice my mpg go up a bit...now at 21.4mpg with 6000 miles on it
Well, you're probably driving harder than I do, but I still think you ought to be up in the 20s MPG. If I were you I'd get a diagnostic done on it.

I should have asked, do you have any lights on the dash? Like the Check Engine Light?

About your oil consumption, as I re-read your first post, it looks like you're saying that you're getting 40 miles to a quart of oil? That's outrageously bad. These engines do use a lot of oil, but that's ridiculous and should be assessed by your dealer.
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post #25 of 28 Old 02-25-2019, 08:42 PM Thread Starter
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Well, you're probably driving harder than I do, but I still think you ought to be up in the 20s MPG. If I were you I'd get a diagnostic done on it.

I should have asked, do you have any lights on the dash? Like the Check Engine Light?

About your oil consumption, as I re-read your first post, it looks like you're saying that you're getting 40 miles to a quart of oil? That's outrageously bad. These engines do use a lot of oil, but that's ridiculous and should be assessed by your dealer.
Nope, no lights on my dash.
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post #26 of 28 Old 02-25-2019, 10:53 PM
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CAFE gas mileage standards. Jeep specifies 0W20 for the United States and Canada, all other markets use 5W20
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post #27 of 28 Old 02-26-2019, 01:23 AM
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@Clarissa132

You must be under warranty. I suggest you have your dealer give it a diagnostic. Your fuel consumption is terrible -- half what it ought to be -- and while these things do use a lot of oil, yours is the worst I've heard of.

Best case scenario, something didn't get connected at the factory. Worst case scenario they give you a new motor.

These problems are not something a new owner should have to cope with.
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post #28 of 28 Old 02-26-2019, 09:33 PM
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CAFE gas mileage standards. Jeep specifies 0W20 for the United States and Canada, all other markets use 5W20
Do they even offer 2.4L engine outside of US or Canada? To my knowledge, they dont. So, all other markets you talk about do not exist.

Plus using 0w20 vs. 5w20 has minimal gas mileage implications. They have identical viscosities once warmed up. The only thing 0w would help with is cold cranking. Gas mileage test are done with completely warmed up engines.
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