Yes, it was from the DIC readout. I haven't even gone through my first tank of gas yet. I will check DIC versus actual mileage and re-post. I have a road-trip planned this week so I should get some good data.
Brought my double-cab home from the dealer yesterday. 85 mile trip, mostly highway, maybe 10 min of stop and go traffic. 18.0 MPG average when I pulled in my driveway.