u/Appropriate-Age-5787

Hi Folks, Bought the car last month and just took it out of first service last week. I'm a new city driver in chennai. Have driven only 640 km until now. Mileage currently sits at 10 kmpl. I see people posting around 18kmpl for city rides. I Understand there would be slight improvements once I master city ride. But want to understand does it improve after few 1000 kms or should I opt for Shell petrol or is it purely based on driving skill. First car and new driver and , hence the very basic question. Any insight is highly appreciated. Thanks