WIth talk of MPG, particularly with new owners, I'm wondering about overall MPG numbers. According to the OnStar App, I'm steady at 20MPG after approximately 8500 miles in just over a year of ownership. Mine is a '12 Luxury AWD. Driven primarily short distances to work and errands, but there are several 350 mile road trips between Syracuse,NY and Atlantic City, NJ. Going by the DIC, I generally see about 18+ for my regular driving, and around 24-25 on long trips.