I have bought a 2nd hand, 2010 automatic Honda city and odometer reads 18000 km.The car overall is in good condition .The city fuel average is only about 8 kmpl. My daily run is about 2-3 km. Can this consumption by improvement with any modificati

I have bought a 2nd hand, 2010 automatic Honda city and odometer reads 18000 km.The car overall is in good condition .The city fuel average is only about 8 kmpl. My daily run is about 2-3 km. Can this consumption by improvement with any modification. I drive with a very light foot. On a bit aggressive driving is less than 7 kmpl. please advise.