Sorry for the late reply, I was not paying attention to this thread for awhile. I have put about 1,600 miles on the car and so far so good
Fuel econ is about 26 mixed city / interstate. I averaged about 32mpg on an 800 mile round trip last weekend going about 70 most of the time. The seats are great as well. Very supportive.
Fit and finish is excellent. Even better than in my 2006 Mazda 3i Touring. There are more soft plastics and the layout is clean and everything is solid. I don't get any rattles or noise. The stereo is pretty damn good for being the stock 6 speaker system with good highs and solid punch on the lows.
I have the 6-speed manual sport. The clutch lets out very late and doesn't give you a lot of time before it catches so that takes a bit of getting used to if you drove a more forgiving manual before but once you get it down shifts are smooth and the gears are easy to find. Handling is fantastic and incredibly responsive.
Only gripe is road and wind noise is higher than I would like. It's not a problem in town but once you get over 60mph you start to notice. The tires give off a bit of noise and wind is apparent on the interstate. It's not terrible but it could be better. It is louder than my old 2006 model. The good news is the AC is frosty cold and takes very little time to get there. A huge imporvement over my 2006 which never seemed to really get very cold.
For the price you get a lot. I paid under 20K for the S model. A Civic with the same features would set you back about 4K more (I compared numerous cars before getting another 3). Hope that helps