I have a '99 Pontiac Sunfire. Drove for 600 km with a full tank initially...

[Call Nine One One]

..., (54L). Tank almost empty, what is? Is it bad, ok or very Good?
what is the mpg?

 

[melsg5]

Divide the 600km by fuel tank capacity and you will get the kpg! If you have the owners manual it will list the tank size.

 

[Zimgxp]

Fill it up and divide the mileage by the number of liters you put in it. that will be your true mileage.