it is a 1.6 but the 115ps version, ive not done any motorway driving yet, my average mpg is showing at 39.x. which is 2 days worth of driving, and me having a bit of a play at times.
i am also upgrading from a mk5 fiesta, a 1.25 zetec. i got about 45-47mpg out of that, no motorways tho, just 5-10 mins journeys.
i think last year when i borrwed this car to go away i got 50ish down the motorway just doing 65-70.