@ all thanks for the good wishes.
I am told and I understand the first few fillings, of both CNG and Petrol, will give horrible average but then things would settle down. This is my first filling of both. Will convey the average after 5-10 fillups.
The brakes are much better than Corolla, for sure.
I saw the Sports version yesterday at Azim Motors. Its tacky and cheap, to say the least.