Studies show that the CNG vehicles market is characterized by a growing aftermarket for conversion kits. A CNG vehicles conversion kit allows existing gasoline vehicles to operate on compressed natural gas, offering a cost-effective path to lower running costs and reduced emissions. The car modification segment is experiencing rapid growth, driven by consumer demand for customization and cost savings.

A CNG conversion kit typically consists of several key components: a high-pressure storage cylinder, pressure regulator, pressure gauge, changeover switch, CNG level indicator, gas-air mixer, and various hoses and fittings . The conversion process involves installing the cylinder in the vehicle's trunk or cargo area, which reduces available boot space, and integrating the fuel system with the engine. The cost of converting a vehicle to CNG can range from approximately Rs. 25,000 to Rs. 50,000 depending on the type of vehicle and kit used . All spark-ignited engines can be converted to CNG with a specially designed conversion kit .

Several automakers now offer factory-approved, dealer-fitted CNG kits that retain the vehicle's warranty and reliability. Honda offers a Lovato CNG kit for the Amaze (Rs 99,000) and Elevate, while Nissan provides a Motozen CNG kit for the Magnite (Rs 72,000) with a 3-year/1,00,000km warranty . Renault and Citroen also offer dealer-fitted CNG conversion options . The recent GST reduction from 28% to 18% on CNG retrofitment kits has made conversion more affordable for buyers .

Factory-approved CNG vehicles have the same payload capacity as diesel vehicles, however in case of retrofitment, payload is reduced by the weight of the cylinders . Modern conversion kits often include safety features like a micro switch to turn off the car during refueling and a leak recognition feature that switches the car to petrol mode in the event of a gas leak . The CNG vehicles market continues to support conversion kit innovations that make CNG accessible to a wider range of vehicle owners.

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