I have a 2013 Focus Titanium Hatchback (Dual clutch auto) and I have around 2000 miles on it now. I have filled up 6 times now. My commute is around 85% highway (55mph + without stops) and I only average 28.5mpg. The window sticker for my car reads 28 city, 38 highway so I would expect to get well above 30mpg with my driving habits. This mpg value has not increased since I have owned the car.
BTW I am not only relying on the trip computer, I also calculate mpg every time I fill up.
Also I hear a rubbing noise coming from the transmission periodically in third gear while accelerating. My dealer tells me that the sound is normal, but I have driven many cars in my life and have never heard this noise before.
Additionally, my car will "buck" sometimes if I try to accelerate from a stop on a hill. I think there is a problem with my car but the dealer does not want to admit it. Im not too happy right now.