first trip with 2022 chevy duramax 3500 flatbed . other than problem with filling tank , awesome trip. 1700 miles from alabama to arkansas 9.9 mpg average with cruise set 0n 65mph
I looked at the OP's profile, and he has a pretty hefty (12K GVWR) bumper pull TT listed there. If he got 10 mpg pulling that trailer at 65 mph then I'd say that's just fine. If he gets 10 mpg running solo I'd think he was driving with the emergency brake on or something.