It seems like every vehicle in Maruti's portfolio will receive CNG power sooner or later.
After we reported that Ritz and Estilo will have factory fitted CNG kits last week, ET has more information to share. It says the Alto, Wagon R and the SX4 will receive them in a short while. The CNG vehicles will be 15-20% dearer than the regular model.
IV Rao, managing executive officer (engineering) at Maruti Suzuki -
It’s our answer to green technology that will also be most fuel-efficient auto fuel in India, blending the benefits of gasoline engine power at the cost of the CNG.
Maruti's CNG kits fitted at the production line uses a locally developed i-GPI (intelligent gas port injection) technology that gives the user the option of operating the vehicle on either gas or gasoline. This system uses computer controls and injectors inject gas into the manifold directly eliminating power losses which is to the tune of 15% in other vehicles.
Source - Economic Times