Well after being an '06 Civic owner for 3 months now, I can honestly say
that the mileage in this thing is so overrated it's a shame. EPA states 30
city 40 highway but in reality, it depends more on whether the air
conditioning is on than anything. Yes I have gottan close to 40 (actually
about 38 when I had no traffic at all and no AC on during the entire
tankful...and that was only one tankful in the 3 months I have owned the
car) but in reality, I rarely get more than 33mpg and lately with all the
heat in SoCal, I am lucky to get 26mpg with the air on.

What gets me is that the Accord I had prior to the Civic seemed to get just
about the same mileage whether the air was on or not. MAN I miss that car. I
am actually beginning to think about dumping the Civic and going back to the
Accord. In addition to the poor mileage, the AM radio sounds awful, the air
itself feels more like a heater when the car is not moving, and all in all
I am not impressed with this vehicle one bit. The Accord is a great
car...the Civic? You can have it!