Maruti Suzuki India Limited (MSIL) sold a total of 62,996 factory-fitted CNG vehicles in FY 2014-15, a growth of 23% over previous year. The contribution of CNG vehicles to total sales increased to 5.4%, from 4.9 % in FY 2013-14. Maruti Suzuki, the first company to introduce factory-fitted CNG cars in India in 2010, offers six dual fuel (CNG+Petrol) models namely Alto, Alto K-10, Celerio, Wagon R, Eeco and Ertiga. The CNG variants of Alto K-10 and Celerio were launched in 2014-15.
CNG is a cleaner fuel and emits a negligible amount of PM10 and PM2.5. In cities like Delhi and Mumbai where distribution infrastructure is in place and CNG for automobiles is available almost 50% sales of Wagon R, Eeco and Ertiga are accounted for by the CNG variants.
Maruti Suzuki cars are powered by Intelligent Gas Port Injection (i-GPi) technology, which works on Dual-ECU (Engine Control Unit) technology. The i-GPI technology uses separate injectors for each cylinder. Based on inputs from the ECU, optimum CNG quantity is injected to the engine through gas ports. The quantity of CNG required for different driving conditions is controlled by the dedicated ECU, leading to more efficient fuel usage.
| Best in Class | |
| Model | Fuel Efficiencyin CNG* mode |
| Alto | 30.46 km/kg |
| Alto K-10 | 32.26 km/kg |
| Celerio | 31.79 km/kg |
| Wagon R | 26.6 km/kg |
| Eeco | 21.8 km/kg |
| Ertiga | 20.80 km/kg |
| * as certified by Test Agency under Rule 115 of CMVR 1989 | |