Civic 2002 fuel average on CNG and Petrol

[muhammadimran8]

i have just bought the civic 2002 EXI, what is average CNG and petrol consumption ,
what is the easiest way i can do it my self.

[iqbalu140]

Can't say about 2002, but I have a 2004 exi prosmatec, gives me 12km/L on long with AC. City is about 5-6