40kmpl with real world riding is impossible in my opinion.
If anyone manages to get that much, the 220 DTSFi should be taken away from him. Like a friend of mine who get 45-48 kmpl from his 180 (the old one). Never goes above 50 kmph. What is the bloody point of having a 180 then ?? A Baja Platina can also reach that speed.
If the 220 is ridden the way it is meant to, I would say max is 30. With some careful riding(not revving everytime), abt 33 or so max. This is based on my own experience with a 180 DTSi. Even when I dont rev the engine much and only let myself have
fun once in a way, the best I get is abt 35-37