So I finally went through my first tank of gas today. Not sure what type of gas the dealership filled up with but I got 350 miles out of the tank of gas before the fuel light went on. Breakdown is about 50/50 between highway and local streets. the computer said I was averaging 15 miles to the gallon. Hope fully after another 2-3 tanks of gas I'll be able to see at least 19-21 MPG as some other members have been achieving. I did notice when the cruise control is set under eco mode the MPG bar is always in the mid twenties to 30 MPG.