I bought a 2013 Ecoboost and when it had 3,000 miles on on it, I drove on a small trip (185 miles, one way). I got 28 mpg, one way and 27 mpg home. I was driving about 70 mph. Is this about the norm? When I bought my 2011 F150, the dealer said the fuel mileage would improve when I had about 10,000 miles on it, and it did. I like it so far, and we've had no trouble at all.