I get about 320 to a full tank if I am driving sensibly. Used to get 450 out of my mondy 2.0 petrol but that had a 61.5 ltr tank and the zs only has a 55 ltr tank so if you work it out that isn't that far off what I used to get. That is driving very very sensibly tho.
I would get nowhere near that if I am having fun