yeah here in dc the carpool lane is pretty convenient too. until there is a wreck on there and you cant get off until it is cleared

02 EX Coupe Auto here:
Max mileage on a tank = 455.7 (something like that, it was over 450), summer driving, A/C on, 80mph average on the interstate, 13 gallons used.
Max MPG achieved = 40mpg, summer driving, ALL highway, 400 miles on 10 gallons of gas.
My everyday, city driving with highway mix, about 330-345, 11 gallons of gas used. Seems to be the same in summer or winter, A/C doesn't seem to affect my mileage much. I am a heavy foot, I'm sure I can do a little better mileage wise if I didn't treat my car like a race car :)

During a move from CA to AZ I was following behind the moving truck and going from LA to Phoenix I got 54 mpg... 02 civic ex.

where in az, im from phoenix

i think my car is now starting to hit its golden age, seeing as how i used to get like 280-320

Mileage - I got 360 with 10.456 gallons (i have 76,000 miles)

vehicle - 2001 Civic Ex Coupe (Auto)

gasoline grade - 87

driving habits - Like i drove like a granny, and all the mileage was mostly city. 80-20 city-hw

-what are your mods - nothing

then i just filled up last night with 11.700 gallons (yeah i cut it close) and got 390.6 miles out of my civic. I also gunned the crap out of my car all week(all city miles), and still got 33+ mpg Yea!

i cannot wait untill i get to drive mostly highway. but yeah, i have been getting this mileage all summer