the same as the previous models basically. not much has changed in that regard.
I get above the window sticker which is 13/17. I get more like 15-16 city 18-19 highway, which is good for a truck with almost 400 horse.
I got 23 the other day on a county highway (50-55mph) for about 35-50 miles. That's the nice thing about northern IL, it's so flat you could roll a marble across the entire state and it wouldn't stop