Considering 2012-2015 Suburban, have a few questions

One of these days, Imma slow down to a snails pace and see if the mpg claims, like mid 20s mpg in a V8 Chevy Sub is a reality or pride of ownership claim.

Remember, your mama said, most men lie about 3 things.
The size of the fish they caught.
Gas mileage of their truck.
And the size of their weiner!