It is a good car and u can not have 1300cc car in that price but the problem is not with the car the problem is with mechanics they can't understand the mechanism. I give u a simple example I own a Liana 2007. Due to some problem in CNG kit it was not running on CNG, when i took my car to ZEESHAN MOTORS (Hyderabad Suzuki Authorized Workshop) they said if u wana keep the car change the FF CNG with EFI local CNG. I was shocked to hear that what the hell they r saying. If u wana buy liana u need to have one and good mechanic.
I suggest u one thing if u wana buy liana and want to run it on CNG than u should change the Ignition Coils. Factory Fitted coils life is max 2 years because of heat. u should replace it with Indus Corola coils (DANSO) than it will give very good pick, good average and u will love it.