Its simply the best and the worst car on CNG of its times, (all balenos)
Best as it drives and gives the best mileage on CNG in its class.
Worst, the ignition coils make it a very problematic car, But Once you replace the coils it a-okay, Dont wash the ignition coils, even if u wash them, Dry them before use. (which means washing the engine isnt recomened nor is it of any use)
A brand new Genuine set of Coils and wires comes around 18k
Malaysian around 7.5k
Pakistani around 5k
Scrap market used genuine sets are around 7.5k
A genuine set easily last more then 100k kms if u maintain ur car, and change spark plugs accordingly.
Another issue with Baleno is that the front lower arms, (keinchiyan they need to be replaced if bushes wear out, Genuine ones cost 18k a set (mostly not awailable, Taiwan set costs around 5k).
PS: the coils issue can arrise in any car, Yes very common in Lancer/Santro/Baleno due to waste spark system, But can come in any car.
Corolla and Civic have four coils, Corollas each coil costs around 6k, While if u see Balenos each cost around 8k and Rs.2200 for the wires