My father has kept a liana since early 2008 and it has run 192000 KM (150k with us) with 2 CNG kit service sessions and 1 coil replacement. Coil was my fault as I trusted my service guy's word after he agreed not to wash the engine bay. He ended up doing it anyway and it cost 8900 to replace a single coil at Suzuki years back but I know for a fact coils are available at a much lower price in the open market. My father just likes to go to Suzuki 3S for obvious reasons.
I second that. It is a very good option.
Probably even less.
Coil means ignition coil. When you wash the engine bay of a hot car you should always be wary of issues especially if you have parked a Liana or Baleno with a hot engine at a service station. It tends to mess up the coil with no other solution but replacement.