Mpg - Page 2 - Jeep Compass Forum
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post #31 of 43 Old 10-23-2019, 11:48 AM
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I got 29mpg for a couple long trips that were over 3 hours one way. Normal driving I get 24-26mpg.

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post #32 of 43 Old 10-28-2019, 10:20 PM
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UK 2.0lt 170bhp diesel 9 speed auto

On a run keeping below 70mph can average just about 51-53mpg

Mixture of town and motorway - typical commute to work 38-43mpg

Driving more around 80-100mph mid 30s mpg

Fastest I've had it 131mph on speedo which showed 126 on the u-connect GPS

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2018 Compass Limited 2.0 MultiJet II 170hp 4x4 Auto9 with 19's
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post #33 of 43 Old 10-28-2019, 11:25 PM
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Originally Posted by Birky_D View Post
UK 2.0lt 170bhp diesel 9 speed auto

On a run keeping below 70mph can average just about 51-53mpg

Mixture of town and motorway - typical commute to work 38-43mpg

Driving more around 80-100mph mid 30s mpg

Fastest I've had it 131mph on speedo which showed 126 on the u-connect GPS

Sent from my G8141 using Tapatalk
A quick reminder. US MPG and UK MPG are different since US gallon and UK gallon are different. So the values are not directly comparable. So a MPG of 40 for UK is about 33 for US.
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post #34 of 43 Old 10-29-2019, 12:21 PM
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Imperial (UK) gallons are not the same as US gallons a UK gallon equals 4.55 litres while a US gallon equals 3.79 litres.

thats 20% diff
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post #35 of 43 Old 10-30-2019, 01:00 AM
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Imperial (UK) gallons are not the same as US gallons a UK gallon equals 4.55 litres while a US gallon equals 3.79 litres.

thats 20% diff
All things being equal a diesel will be more fuel efficient, too.
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post #36 of 43 Old 10-30-2019, 01:03 AM
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PS, according to my EVIC I've averaged 33.4MPG during my first 12,000 miles. I put the snow tires on this week and reset it. I know my fuel economy will drop because of the snow tires and of course lower temperatures as winter approaches.
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post #37 of 43 Old 10-31-2019, 02:13 AM
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...I know my fuel economy will drop because of the snow tires and of course lower temperatures as winter approaches.
You left out winter-blend gasoline as a reason for your fuel economy drop during the winter months.


From What is the Difference between Summer- and Winter-Blend Gasoline?:
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The US Environmental Protection Agency (EPA) says conventional summer-blend gasoline contains 1.7 percent more energy than winter-blend gas, which is one reason why gas mileage is slightly better in the summer.

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post #38 of 43 Old 10-31-2019, 03:14 AM
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I get around 23 mpg overall. Highest I was able to get was 29 and driving very smoothly and carefully and using the cruise control a lot. (2007 jeep compass FWD)
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post #39 of 43 Old 10-31-2019, 09:15 PM
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You left out winter-blend gasoline as a reason for your fuel economy drop during the winter months.


From What is the Difference between Summer- and Winter-Blend Gasoline?:
True.

I still think the tires make a huge difference, too. I'm talking about a 10% decrease.
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post #40 of 43 Old 11-01-2019, 12:06 AM
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True.

I still think the tires make a huge difference, too. I'm talking about a 10% decrease.
Air resistance also makes a big difference.

Finally, a vehicles aerodynamic drag is proportional to air density. On a 70-degree-F day, the density of the air is 16 percent lower than on a day with temperatures around 0 degrees F. Although this makes little difference in urban driving, it could account for a highway mileage per gallon reduction of 7 percent on the colder day
https://www.scientificamerican.com/a...uel-economy-o/


This is a big factor for naturally aspirated prop planes. Good luck taking such a plane up into the air from a high elevation airport on a hot summer day. Not only there is very little air to generate lift, engine power is also lower due to thinner air.

Last edited by Tripod; 11-01-2019 at 12:10 AM.
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post #41 of 43 Old 11-01-2019, 09:10 PM
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2018 Latitude FWD 6 Speed Auto, 30K

Right now I am averaging 22.6, but I stay on the pedal a lot, and Eastern/East Central Oklahoma has a bunch of hills on the turnpike. I will say this though. We just had a decent cold snap this last week and my tires lost a good 7-8 psi from it. Finally got them filled a couple of days ago and it really made a difference in ride quality and efficiency. While they were low I was averaging 20.2 mpg. I just changed the air filter as well, so now I am crossing my fingers I can get back to my usual 24ish average.

They definitely didn't build this thing for speed (obviously). I know my compass hates 80+mph. It will do it just fine, but it sure gets thirsty. Absolutely love my Jeep though.
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post #42 of 43 Old 11-02-2019, 01:05 PM
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Just had mine mapped so will see what difference it does to economy and tank range

Certainly a fair bit quicker now

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2018 Compass Limited 2.0 MultiJet II 170hp 4x4 Auto9 with 19's
2019 Compass Limited 2.0 MultiJet II 170hp 4x4 Auto9 with Towing Pack
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post #43 of 43 Old 11-03-2019, 05:35 PM
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I just did a ~ 300 mile trip a couple weeks ago with the Compass on I75 in Michigan. Returned 29.4 per the computer and this was driving 75 - 79 MPH generally with a couple slowdowns for construction.

My normal average is 21 but that is 100% city, normally trips of only 1-2 miles at a time.

I'd consider that good for a AWD crossover.

Current:
2017 Jeep Compass Sport - 4x4, 2.4 Tigershark, 6-speed manual, Laser Blue
2013 Ford Escape SE - 4WD, 2.0T, Magnetic Grey
1984 Chevy Camaro Z28 - 5.0, 5-speed manual, posi rear

Previous:
2011 Ford Taurus SHO - Unleashed Tune, H&R lowering kit, Voxx Black Wheels, Blacked grill and trim
2012 Chevrolet Sonic LTZ - Trifecta Tune, 6-speed manual, Eibach lowering kit
2007 Grand Prix GXP - Trifecta Tune, Flowmaster exhaust
2009 Pontiac G5 - Trifecta Tune, Magnaflow exhaust
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