Backwards MPG?

[Escape.idiocracy]

So what's wrong with your JT?
My wife's 3.6 gets her 500 miles - about 26-27 mpg depending on the roads and speeds. Oh, that's in a Grand Cherokee - maybe that's the difference?

Um? Nothing? Zero complaints fuel economy is epic compared to the JKU’s 3.6

depending on the year GC- it might not be the same as the 2016 3.6 in the jk. Want to say the GC was the first to see the newer high compression 3.6.

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[ShadowsPapa]

Um? Nothing? Zero complaints fuel economy is epic compared to the JKU’s 3.6

depending on the year GC- it might not be the same as the 2016 3.6 in the jk. Want to say the GC was the first to see the newer high compression 3.6.

My wife tends to trade every 2.5 to 3 years or so. We had a 15, 18 and now a 21
The 15 may have gotten 18 mpg, 20 on a great day on rural roads.
The 18 blew it away in mpg. Jumped from 18 to easy 25
the 21 does just as well and it just hit 6,000 miles so it just getting limbered up.
Yeah, I believe the Grand was the first to get the new 3.6

 

[Hootbro]

When I used the app to figure the long-term numbers, it lined up pretty close to the truck's numbers.

Yeah, my over time numbers tighten down to under a 0.75 MPG difference average. It does not calculate City MPG's all that well and has the larger error margins.

 

[saintpauljeff]

31.5" tires, so you'll be winding up just a small bit more than an Overland with 32.2, and your more narrow tires explain the slightly better mpg as well.
Any increase in tire width will see those numbers drop.

Similar result with my Gladiator experience- 2020 Sport S Max Tow with the stock Bridgestone AT tire was a couple MPGs better than my 2021 Rubicon with the stock Falken tire, and the biggest contributing factor are the tires (i.e. same driving style/speeds for both)

 

[BearFootSam]

My wife tends to trade every 2.5 to 3 years or so. We had a 15, 18 and now a 21
The 15 may have gotten 18 mpg, 20 on a great day on rural roads.
The 18 blew it away in mpg. Jumped from 18 to easy 25
the 21 does just as well and it just hit 6,000 miles so it just getting limbered up.
Yeah, I believe the Grand was the first to get the new 3.6

I’m an anti-auto person generally but the JT has forced me to admit this slush box is really, really good as they go. The broad gear range and smooth shifting really help the efficiency. It has handled towing quite well.

 

[kad's_Glad]

What is this "MPG" you speak of?? I measure my fuel efficiency in "yards per gallon". As such, I'm averaging 22,880 YPG.

That's about the only way I can possibly fool myself into feeling good about my totally stock Mojave getting an average 13 MPG.

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