Gas Mileage???

[Robb25]

I've had my 2025 Rebel for 500 miles now and am curious to what gas mileage everyone is getting?. I only got 14.3 mpg with about 70% hwy miles. No lead foot, averaging 75mph. Any suggestion s or is there something mechanically wrong with my truck?
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[Kallig]

Unfortunately, this sounds about right.

My 2019 Rebel 4x4 with 5.7 non E-Torque, has averaged anywhere from 13.5 to 15.3 MPG over the course of my ownership.

 

[Robb25]

Unfortunately, this sounds about right.

My 2019 Rebel 4x4 with 5.7 non E-Torque, has averaged anywhere from 13.5 to 15.3 MPG over the course of my ownership.

Wow! I was getting 18.0 around town and 22 on the highway with my 2022 Laramie and the 5.7 Hemi non E-Torque. I wish I would have kept it now.

 

[Dragonmaster13]

21-25usmpg, but that’s and Ecosdiesel. 16-19 towing 7609lb 33’ trailer

 

[SD Rebel]

The Hurricane and Hemi are close to the same mpg.

However, the issue is really your Rebel trim. If you un-Rebel it, mainly the 33" Duratracs, and replace them with similar tires (i.e. smaller street oriented) as your previous RAM you should get pretty close.

You still have a 1" lift, but the mpg from that is marginal. I hate that RAM doesn't adjust the Rebels mpg down to compensate for the tires like Chevy does on the Trail Boss. They are allowed to blanket state the EPA rating to all similar configured trims (i.e. crew cab 4x4s), but the EPA does allow them to adjust down any trim if they choose, but Stellantis don't which is fraudulent to me.

 

[stevj]

...averaging 75mph.
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Well. There's your problem.
You're pushing a vehicle with the aerodynamics of a brick to 75mph.
As a test, try slowing down a bit so the engine isn't working so hard to push the air out of the way.

Steve

 

[Maddoggin]

Wow! I was getting 18.0 around town and 22 on the highway with my 2022 Laramie and the 5.7 Hemi non E-Torque. I wish I would have kept it now.

that's because the rebel has 3.92 gears and your Laramie more than likely had 321 or 355 which is allot better on highway gas mileage.

 

[edgarrian]

I did a trip from North Dakota back to Indiana. This trip made me realize these trucks dont get great gas mileage going 70mph and above. Add in headwind and its worst. The sweet spot seems to be 50-60 and i can get 19.

Ur truck only has 500 miles on it so its not broken in yet. IF you think its mechanical. Sell it and buy a car

 

[LOWRMPG]

I get 17-18 with A/T tires, give it some miles 500 is pretty low.

 

[Maddoggin]

I've had my 2025 Rebel for 500 miles now and am curious to what gas mileage everyone is getting?. I only got 14.3 mpg with about 70% hwy miles. No lead foot, averaging 75mph. Any suggestion s or is there something mechanically wrong with my truck?
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I got a 2025 rebel with 4000 miles and I'm getting anywhere from 15 to 17 on city and 16 to 19 on highway depending on the wind and how fast I drive of course. if I drive 75 to 80 I get around 15. if I stay under 65 I get 16 to 18. I'm also using 93 gas sometimes 89, it says you can use 87 but if you read the manual the manufacturer recommends 93 for optimal performance!

 

[asgadf/lkjnadsfg]

Sounds like its working as designed, just like mine. It's got the aerodynamics of a dumpster, has a one-inch lift, 33 inch tires, and is four wheel drive.

Keep in mind too that at 75 MPH you are travelling roughly 36% faster than the 48 MPH average speed used in the EPA "Highway" fuel economy test.

Your truck is getting the mileage it was enginneered to get; it only APPEARS to be broken bc you were kind of bullsh!tted by the dealer/window-sticker, and you were travelling way faster than the speed used to generate the "Highway" fuel economy figures.

My wifes Honda gets over 40 MPH at Interstate speeds, but she can't haul cool stuff like my truck can, so I guess its all tradeoffs.

Here's some reading from Car and Driver on the history of the fuel economy tests: https://www.caranddriver.com/features/a15388892/the-truth-about-epa-city-highway-mpg-estimates/

I will give my truck credit for this though, if I run non-ethanol and I'm cruising at 55 MPH with no stops on State highways, I can get 19 MPG. Ethanol, faster speeds, and getting back up to speed from a stop all serve to reduce fuel economy; add in a little stomp-and-go with the 5.7 and it makes things a bit worse.

Also, there was no improvement in mileage after some type of "break in" period for my truck, its got 30,000 miles on it now, and its performed the same since Day 1.

 

[Trooper4]

I've had my 2025 Rebel for 500 miles now and am curious to what gas mileage everyone is getting?. I only got 14.3 mpg with about 70% hwy miles. No lead foot, averaging 75mph. Any suggestion s or is there something mechanically wrong with my truck?
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You'll probably find the sweet spot for MPG around 60+/-. Try that.