6500km in less than 3 months?

That is quite high mileage.
I noticed that Latio consumes most petrol during cold start in the morning when tachometer reads 1800rpm at idle in neutral.
I can practically see my fuel tank needle drop

To get maximum mileage out of your tank of petrol -
1. Remove spare tyre. Keep a can of tyre sealant on stand by
2. Remove all junk in your boot
3. Pump your tyre presure up to 230KPa
4. Try not to turn on your air con where possible
5. Pump cost efficient 95RON petrol
6. Be as light on the accelerator as possible. Imagine that your foot is stepping on an egg
7. Go for regular maintenance service
8. Clean your car of dirt to reduce drag
9. Go on a diet and lose weight so that your Latio carries a lighter load

10. Don't drive up to the highest level of your multi-storey car park to park your Latio just to avoid those scratches and dents. Might not be fool proof
11. Any more to add?