This design makes refueling easier and more convenient.
Civic is equipped with a capless fuel filler.
This capless system enables drivers to release the door and immediately insert the fuel nozzle—no need to remove a cap or worry about dropping it against the side of the vehicle.
After refueling and withdrawing the nozzle, just snap the filler door closed and you’re on your way
Important Note: When refueling with anything other than a standard filling-station nozzle, a special funnel must be used to avoid damaging the fuel system. The funnel, supplied with each vehicle, is located in the spare-tire tool tray beneath the trunk on.