Honda 2016 Civic Coupe Owner's Manual page 26

Refueling
(P 464)
Fuel recommendation: Unleaded gasoline with a pump octane number 87 or
higher required
Fuel tank capacity: 12.39 US gal (46.9 L)
a
Press on the edge of
the fuel fill door to
make it pop up
slightly.
b
Wait for five seconds
After refueling, wait
for about five
seconds before
removing the filler
nozzle.
* Not available on all models
25