I've had my 14 sport 6 speed for almost 14 months and nearly 12,000 miles.I set the trip B after the 1st tank and have averaged 34.1 MPG since then,it rolled back to 0 miles at 10k but still shows my average MPG since second tank.
I live at 9100 feet,keep econ button on nearly all the time,drive pretty mellow most of the time.
Out and back to the reservoir 60 mile R/T 1600' elevation change I average 41-43 MPG.
30-36 on my commute to work (7 miles)flat roads depending on how many of the 7 lights are green.
Driving to Denver 2000' elevation gain(to 11,100') then a 5000' elevation loss I get 50-54.Coming back uphill I get 30-31MPG.
Recently took it on a 3000 Mile road trip,Colorado to Olympia Washington.Averaged 32 MPG due to higher highway speeds.In the 80 MPH zone of Idaho,Utah,Wyoming at 3+ speed cruise on I got 29 MPG.
Really happy with this car,gets better MPG than our 09 civic EX 5 speed stick, more power,smoother ride.Looks better IMO.
This car seems to get better gas mileage at high elevation