We hv 06 corolla in office giving 11 12avg
I am not sure of liana coz nvr experienced it
Liana in good condition and only petrol driven should be ur search priority if u want to go fr it.....but its hard to find such one.
Corolla is tough/reliable car....again the catch is u hv to find one in best condition, without cng, on original engine.
If u are not aware of cars issues etc, then (my opinion) cultus is the way.....its maint is very easy and not expensive or tricky like of other 2 cars....i know it doesn't have features etc.
I wud look for corolla or cultus in ur budget.