I pulled a Sun Lite 19RK, ~ 3000#, 5000 miles last summer, Illinois to California, with my 2023 XLT. I averaged 14.5 miles per gallon on my trip. I had zero problems going over the Sierras on I-80 and then coming back on Interstate I-40. Lots of mountain driving.
I have 2023 XLT w/tow package and pulled a loaded 3500# trailer from Illinois to CA via I-80, then back via I-40, 5,500 miles. The onlyproblem I had was when I forgot to put it in "tow mode" I overheated the turbocharger and got an engine error warning. The problem went away when cleared it...