What do you want to do? Do you want a 14 years old or a 8 years old car? The choice is yours...
As for Liana's CNG consumption... a factory fitted CNG Liana can do around 150km in city and does around 200km on highways (the figures are from Islamabad...it can vary from city to city). * The last time I drove my Liana was September/October last year
But remember never ever buy a abused Liana.