We need to understand the difference in averages mentioned here, small distances with heavy traffic jams result in low fuel average whereas long distances with fewer traffic jam results in better average.
No need to worry if you are getting 14 kmpl in heavy traffic, if you want to check the average, go to ring road and drive for 30 minutes after zeroising your trip A, you will come to know why others are getting better average and you are not. no one is getting a medal here by posting the highest average achieved neither any one is being punished for getting low average.