yep, its normal

saga fuel meter is not linear, it happen to me too

that is why i dont dare to fill up my tank when it is really low

Can squeeze in another 1 or 2 litre if you use really low speed towards the bottleneck. Usually when you fuel until the brim, your 1st bar can last between 50km~70km depends on your foot. Full tank can run around 300~320km in town driving, depends on traffic condition.

For CVT, always remember let loose your brake, let the car start to creep forward a bit, then only gently apply gas pedal. It's not a traditional dinosaur automatic car. Put your foot down during traffic light your car also wouldn't sprint and feel powerless, because the clutch have not bite. It is exactly a manual car, but CVT only got 1 gear and you don't press the clutch pedal but that's all

Hope this help you save a bit on your petrol consumption

TRD Kelisa 
he means he don't dare to wait til very low baru refuel.