If i run 95% highway miles at 75MPH, I live in Texas, with a few bumps to 90MPH for passing, i get 22.5-23 MPG. I'm about 8k into my 2013 Ford Edge Sport FWD.
My Samsung Galaxy S3 functions with it, using my phone's phone number. Unfortunately i use Google Voice, different number ran via software app, and doesn't play through the Sync system.