Hi all...2.7 EB Sport here with about 2,600 miles so far. I live in a suburban area of Phoenix, and have a commute of about 90 miles per day, most of it on the freeway, at about 70 MPH average, though sometimes at 80 and sometimes dead stop, bumper to bumper. When I'm on the freeway, I try to max out the MPG gauge...like the proverbial egg under the pedal. Around town, I drive average posted speeds, and probably average 3-4 "full throttle" instances per day. (Just to merge onto the freeway of course.) Probably 50% of the time with windows up and AC on. I've tried all the way from 87 octane up to 91...the highest available around town. So far, my average is 27.2, and still climbing...maybe one tenth every other day, though the increase is slowing. (I took delivery at 8 MPG!) I'd be very pleased with 27 average given the performance.
I suspect all the gentle throttle on the freeway helps. My last car, a 1.6 EB Fusion with 6-speed manual, averaged 33.2 over 43,000 miles.