I asked a co-worker about his mileage in his 2023 GMC diesel truck, and he was getting around 20 mpg highway.
I had a Ford F150 with a gasoline engine, and it wa good for maybe 17 mpg highway. The nearest gas station that can sell me gas that isn't old or full of water (hooray for rural living) is about 8 miles away. I think that is $1.83 to drive it to the gas station, based on the $3.89 price I saw this morning.
Of course I have to be smug and point out that I get around 4.5 miles per kwh now.