@ Sampath - Thank you for the valuble insight. Yeah. my VIVA is an automatic transmission.
I wish to add that during my last calculation, where I ran down to 9KM/L, I did a cardinal sin by running the aircon while being on idle. Actually had no choice, since I had my infant in the car while waiting for my missus
Anyway, I'm sure to try out your suggestion on the 3-4 gear change.
Would surely welcome more tips.....
I'm planning on doing a long drive withing the next few weeks, hopefully! I will keep this thread posted on my fuel consumption.
Cheers to all!!!