For a Toyota Corolla Cross 1.8X (non-hybrid) variant, a fuel average of 9-10 km/L in city driving conditions is fairly normal. This variant has a 1.8L engine, which is tuned more for performance and comfort rather than fuel efficiency.
Factors like traffic, road conditions, and driving habits significantly impact the fuel average. Since your car has only been driven around 4000 km, it's still in the break-in period, and the fuel efficiency may improve slightly after 5000-6000 km as the engine settles.
To potentially improve your fuel economy:
Ensure regular maintenance, like timely oil changes and air filter cleaning.
Avoid unnecessary idling and aggressive acceleration.
Use quality fuel from trusted stations.
Check your tire pressure regularly, as under-inflated tires can reduce mileage.
While hybrid models are more fuel-efficient, for a non-hybrid 1.8 engine in city driving, your current mileage seems within the expected range.
