What is the normal fuel consumption per 100 kilometers for an Alto?

Hey everyone, what’s the fuel consumption of your Alto automatic? I feel mine is too high, 24.5 liters only covers about 300 km. The light came on at 287 km. Also, my idle speed when starting cold is around 1500, but it goes back to 1100 once the engine warms up. Is this normal for fuel consumption and idle speed?

How many kilometers can it run on a full charge and a full tank?