Whats the oddo says ?? How many kms so far ??
Usually till 6000 kms tuning would allow the bike to drink more fuel and on after 3rd service you are suppose to slowly put the lid on..
P150 should give around 55 kmpl when rode single rider at 55kmph below 5000 rpm..
So yes, give it a check at your near by Bajaj service..
Thanks.