2021 vs. 2024 MPG

[alpha1847]

So, I had one of the earlier 2021 4xe's. It was a fully optioned Sahara. I traded in for a 2024 High Altitude, which is basically a fully optioned Sahara with all-terrain tires. Both had the same axle ratio with the LSD and the same size wheels and tires ('24 Sahara's have more narrow tires for some reason)

With the '21 Sahara, I would consistently get 21-22 mpg cruising just under 75 on the highway. I could have it loaded up with 4 people and cargo with 4 bikes hanging off the back and even have eSave/regen mode on.

With the '24 High Altitude, I can barely sniff 20 cruising at 65. Just completed a 750 mile road trip on I-90 from Boston to Rochester NY and back. One passenger with a little bit of luggage, cruising just under 75 the whole way. I got 16mpg overall!

While I expected a hit from the General AT's vs the Continental All-seasons, can that big of a difference possibly be explained by tires alone?

Sponsored

 

[SAJN]

FWIW, I did a quick compare on the EPA site which doesn't offer any options, and the mileage is the same between the two:

 

[alphawolff]

You're only going to get 16-18 MPG in a 4XE above 75 MPH. I got 14 driving cross country in my 21. Lots of time spent around 85 in Texas.

 

[Jeep Wick]

So, I had one of the earlier 2021 4xe's. It was a fully optioned Sahara. I traded in for a 2024 High Altitude, which is basically a fully optioned Sahara with all-terrain tires. Both had the same axle ratio with the LSD and the same size wheels and tires ('24 Sahara's have more narrow tires for some reason)

With the '21 Sahara, I would consistently get 21-22 mpg cruising just under 75 on the highway. I could have it loaded up with 4 people and cargo with 4 bikes hanging off the back and even have eSave/regen mode on.

With the '24 High Altitude, I can barely sniff 20 cruising at 65. Just completed a 750 mile road trip on I-90 from Boston to Rochester NY and back. One passenger with a little bit of luggage, cruising just under 75 the whole way. I got 16mpg overall!

While I expected a hit from the General AT's vs the Continental All-seasons, can that big of a difference possibly be explained by tires alone?

That's brutal. My 3.6 with XR package gets better mileage.

 

[MaskedRacerX]

With the '24 High Altitude, I can barely sniff 20 cruising at 65. Just completed a 750 mile road trip on I-90 from Boston to Rochester NY and back. One passenger with a little bit of luggage, cruising just under 75 the whole way. I got 16mpg overall!

While I expected a hit from the General AT's vs the Continental All-seasons, can that big of a difference possibly be explained by tires alone?

We took our '24 Rubi 4xe down to Orlando on a couple of trips, averaged right around 20MPG at ~75MPH, that's post battery depletion. And that's with the steeper gears and K02s in a 285.

I was pleasantly surprised that the Rubicon didn't lose much over the '21 Sahara we had

Of course, that's highway travel, our standard SOP is 90% electric only use around town where we get about 1000 miles to a tank

 

[alphawolff]

That's brutal. My 3.6 with XR package gets better mileage.

The battery pack and extra components weigh almost half a ton.

 

[alpha1847]

We took our '24 Rubi 4xe down to Orlando on a couple of trips, averaged right around 20MPG at ~75MPH, that's post battery depletion. And that's with the steeper gears and K02s in a 285.

I was pleasantly surprised that the Rubicon didn't lose much over the '21 Sahara we had

Of course, that's highway travel, our standard SOP is 90% electric only use around town where we get about 1000 miles to a tank

Same for me at home - almost all short trips on electric. Prob fill up once a month at most.

 

[alpha1847]

The battery pack and extra components weigh almost half a ton.

Still, my 2021 4xe was the same weight and I got 21-22 without trying. 16 can't be explained by tires alone. One thing I noticed, which I don't recall in my 2021, is that it won't hold 8th gear as long. Constantly downshifts and slow to upshift. Did a test in manual mode to hold in 8th and there was not any situation it couldn't maintain 73-74, even up steep hills. Have to wonder of tranny programming (no pun intended) is part of this.

 

[GinaC]

I think I've filled my 4xe up twice since I got it at the end of August. And that was only because I took a few trips down to Montpelier because I was so excited to drive it.

Last I checked, I'm getting about 30 "mpg".

Currently winter driving up to ski is skewing me, though, so I can't report on that yet.

 

[alpha1847]

You're only going to get 16-18 MPG in a 4XE above 75 MPH. I got 14 driving cross country in my 21. Lots of time spent around 85 in Texas.

Again, easily got 21-22 on my 4xe Sahara. Just switching from same size all-seasons to all-terrains cannot explain this.....

 

[sentience]

So, dumb question - are you calculating your mileage by hand or using the onboard computer estimate? Because, as others have alluded to, the 2021-2024’s aren’t that mechanically different.

My little idiot brain thinks this might be down to a calibration difference for tire or wheel size.

 

[Scotty Scout]

There is no possible way that the tires are making the fuel economy drop by 6 mpg, or anything even remotely close to that amount.

I think something is off with your wrangler.

 

[alpha1847]

So, dumb question - are you calculating your mileage by hand or using the onboard computer estimate? Because, as others have alluded to, the 2021-2024’s aren’t that mechanically different.

My little idiot brain thinks this might be down to a calibration difference for tire or wheel size.

In both cases, using onboard computer. Both were stock wheels. Based on the actual range I got, it was real.

 

[alpha1847]

There is no possible way that the tires are making the fuel economy drop by 6 mpg, or anything even remotely close to that amount.

I think something is off with your wrangler.

I am thinking the same thing - can only imagine what the dealer response will be......

 

[Jeep Wick]

The battery pack and extra components weigh almost half a ton.

Right, I understand. I just thought the 4xe claim to fame was some improved mpg like most hybrids. Is it only the short miles on battery power?

Sponsored