yep. I think something is wrong with mine. Whenever I raise this to the dealer, they just say that's just how it goes. I think the cruise control is to blame. I believe the cruise control is too controlling. Whenever I use cruise, the truck has a slight shudder like something is holding it back. It feels like the cruise control is holding too tight of a tolerance to the mph setting. Sometimes the shudder is a little worse than other times. Raised to the dealer, but no result so far.My Cousin has a 2020 Laramie 3.6 2WD Crew and he averaging 23-26mpg on the highway. 20mps seems really low.
I owned a 2014 Crew 2WD 3.6 with 3.55 gears a few years back and I would see about 17.5 in the city and about 23-24 on the highway.
Today on my way to work, all highway, my mpg is showing 17mpg.