It will always read **** in city, as idle speed, acceleration and idle time throw the estimates way off.
reset it once and floor it all the way till you hit 75mph. You’ll see what I mean.
Under hard acceleration you’ll get 2mpg, continuous cruise at 75 you should see 15-18mpg depending on wind, humidity, temperature, and fuel octane content.
I think the heavy 33” tire/wheels take their toll, as does the big front end. Personally I find it is a huge achievement to get the mileage the Rebel currently provides. My 6.2L GM trucks averaged 14 mpg and my 5.7L Rebel (std) is better. Filling the tanks on those 6.2L GM trucks was depressing.
Even with towing once a week [7500 lbs or so] I get and average of 15-15.5 MPG. Currently since I am not traveling the highways as much it's down to 14.5. Typically I drive over an hour into Dallas and back daily. With the 75% highway miles the mileage is better of course. I am very happy with the mileage considering this truck is much higher than my sport, doesn't have the same aerodynamic front end as my '16 and is running the Duratracs over an AT tire. It's also faster than my '16 even though it has the same HP number.
The big 32 gallon gas tank is a must have, it creates the illusion it gets better milage because the guage goes down slower. 🤣
I just make sure to keep it above half a tank, hurts the wallet too much when you fill from empty.
Yes it’s the same size, just moves slower because you carry more gas lol.
imagine a truck with the 12 gallon neon tank.
that would be epically painful to watch that needle swing like it’s a backwards tach. 😂
I’m getting 17. That’s hand calculated. I drive easy I guess and I’m running 89 oct like they recommend. I’m on the highway most of my run to work. I didn’t realize how hilly it was around the part of Missouri I live in until I got a truck. Lol.
My 2017 Bighorn with 5.7L and 3.21s averaged about 19 overall. Now, it had the lower front end, shutters on the grille, and the lower rearend ratio.
My 2021 Rebel (300 whole miles so far) is averaging 17 - not broken in yet and with the 3.91s and the less aero front end. I'm noticing it goes into "ECO" mode (MDS kicking in) less often than the 2017, which is likely a combo of new/not broken in, aero, and speed/wind conditions.