i drive a 05 Civic (4cyl/auto) about 80 miles a day. its a super comfortable car to drive in with two people, but once you start to load it up it gets pretty cramped. mine is a 2dr, so i would think that a 4dr would have a bit more room. over the summer with the air constantly on, i got about 34mpg, now i have been consistently at or above 39mpg. i wouldnt hesitate to buy another one.