Congrats "Akapoor" wishing you a million miles of happy traveling !
Some points i would like to give you
-The engine needs 5000 km for it to set in,that is when you really notice the power come in
-If you feel the car lags well that is cos you are at 800rpm which is lower than idle,
-Engine is rev happy compared to other segment diesels so feels a bit like the petrol
-Suspension rebound does send a loud thug so dont be alarmed its common for i20
-Get the high beam adjusted to your liking at the dealership
Feel free to check out my review of my car Hyundai i20 (i-Gen) Sportz Crdi Ownership Review