2017 Ford Edge Sport - 2.7L Eco - Gas Mileage Discussion in 2.7L EcoBoost Posted June 6 · Report reply Hello, I drive mostly in the city, but occasionally outside of the city and my average full tank “miles until E” reading fluctuates very much depending on the week. Granted I know these readings can be pretty inaccurate from time to time, it fluctuates between 290 and 410 miles until E at a full tank. Im curious if other people have this similar problem or if maybe I have something else going on. I have not done my own calculations yet to determine realistic numbers, but I decided to make a post to see if other people have this same issue. My average MPG according to the car is 19 and if you calculate off that, it should have 300 miles until E. What is everybody else's numbers and driving habits?