Gas milage suprise

[Jackpot50]

Drove my 2021 Longhorn 4x4 Hemi E torque to Flordia had 600 miles on it.
Ran 75-80 all the way down 800 miles got 19.8 MPG.
Went another 200 mile south on return got 21.1 MPG to Flordia border
Man was I suprised.

 

[Buz]

Just a guess but I’ll bet you have the 3.21 rear and you are reporting the mpg that the truck is reporting?
Also the wind may have been in your favor.
My Lmited always reports .4 to 1.0 mpg MORE than true hand calculations.
If you have the 3.92 rear and hand calculated the mpg I’m going to throw the BS flag on those mpg numbers.

 

[scottmoyer]

I was surprised to find out that the new Silverado AT4 is actually getting 21mpg. The rest of the truck is sub par compared to the Ram, but that was a surprise. My Rebel is getting about 13.6mpg with mostly city driving. I'm not expecting much better!

 

[davidn0021]

I'm at 13mpg on a Limited. That 3.92 gearing really kills...

 

[Bigtone]

Drove my 2021 Longhorn 4x4 Hemi E torque to Flordia had 600 miles on it.
Ran 75-80 all the way down 800 miles got 19.8 MPG.
Went another 200 mile south on return got 21.1 MPG to Flordia border
Man was I suprised.

I did the same with my new Limited, Pa to Florida with 1k miles on it and had similar results. 3 tanks averaged 18.5 to 19.5, hand calculated.