Update. Taking it back again tomorrow. Ford dealer says they know how to fix this time. This is the third trip to dealer and have had the car for only two weeks. On a good note, just got back from trip to Cambria Pines. I got 26 mpg. Not too shabby for doing average 70 mph with a full car of people and luggage. The ecoboost is smooth, quiet and fun to drive. For a "CUV" this is good mileage.