Maruti Suzuki sell the Ertiga with a sole 1.5L mid-hybrid petrol engine. It is very fuel-efficient by petrol engine standards but not ideal for commuters and highway haulers due to the high fuel prices. Moreover, it can’t match the torque output of a turbo diesel engine for easy drivability even with a full load. Being an MPV, the Ertiga must have a diesel engine option for buyers who tend to commute for longer distances. The Ertiga CNG could be a sensible trade-off to diesel but the high waiting period for the CNG doesn’t help the cause.