I have some manual Citys in the family, it being a 1200cc, an IDSI and manual the worse fuel average they give is 13-14, and the best can go upto 16, within the City.
Altho i have heard the Varios dont give such a gud fuel economy but it should atleast be better then 10-11.5 km/L (thats what im getting out of my 02 Vitz. around 370-380 kms on the 32-35 Liters of petrol.
PS: after having the 1.3 Corolla and a 1.3 Baleno, City IDSI ones are only for pleasure driving. You cant have fun with thoose babies.