2007 Honda Civic EX 4dr Sedan w/Navigation System (1.8L 4cyl 5A)
This is my daily driver, mostly highway (70%) driven.
Avg. 36-39mpg in Summer, Winter mileage suffers due to fuel additives in my cold climate (32-35mpg, still great!).
Best recorded mileage 42mpg average with a tail wind driving across Iowa at 75-80 mph.
I'm happy with my car overall but if I didn't have such a comute I would drive something more sporty and/or luxury minded.
My biggest complete is road noise followed by ride quality, although it's probably better than most "compacts".
My co-workers Mazda3 is not nearly as refined!
Rear tires tend to wear on the inside due to fixed camber.
The Navi is great although the joystick up and left movement quite on me a few months back.
Mileage, Navi, Looks, Brakes well (changed at 75k/front, 100k/rear)
More insulation for road noise.
Better seats for long hauls.
Speakers are terrible..