I have a 2012 crew cab lariat 4wd, 6.2L, 3.73 with about 8,000 miles.

It says I average 12.2 MPG

I have checked and with a combination of highway and around town gotten as high as 13.4 MPG.

around town on the last fill up I got about 11.1, that was mostly around town with a little bit of interstate driving, but was stuck in traffic quite a bit and also left it running for awhile while waiting for someone.