Dear Mr HondaCivic and MrDakar, the big difference is one is
auto car and the other is manual. The real big difference is your
right foot and your ears. When driving auto, need to really feel
and hear the "power-band" of each gearchange so as to ease off the
pedal or step more as the gear engages, basically watch the rpm
carefully. May sound complicated but you'll get the hang of
it.
I drive a Toyota WISH which has a computer read-out of actual
petrol consumption every second -so it teaches you how to maimise
the pedal pressure to get the best speed & FC. My 1.8L averages
14.5km perLwith careful driving and I still get 0-100 in 10.5sec.
using 95octane, 50%highway and 50%city,most of the time with 1
passenger.
So all these factors also affect your FC, so bottomline is you cant
compare the FC of 2 different cars, driving condition and
"sensitivity" of your right foot to conclude if there is anything
wrong with the car.
Honda Civics has been known for very good FC.
cheers....stephen 
