Aoa people, I have Civic 2013 manual transmistion since the past 2 years. The problem which I am facing with it from the past 6 months is the car having a bad fuel economy, within city the car giving me around 8km/L which is really bad. I have gotten the catalytic converter cleaned recently last week nothing happened even after that, I have tried putting octance booster in the fuel tank which doesnt even works, I use hioctance fuel in the car still it gives 8km/L. I am using 5w30 Pso oil fully synthatic, I drive the car with a very light foot so I am not getting why the car has such bad fuel average.