Everything You Need To Know on CNG Kit - Price, Usage, and More

The soaring fuel bills are not only a critical reason for inflationary pressures, but also the reason for the rise in the price of basic everyday commodities. At such times, it has become essential to look for alternative means to conventional fuels. CNG or Compressed Natural Gas is an alternative means to traditionally used fuels such as petrol and diesel. It serves as an excellent and affordable alternative helping car owners reduce their overall fuel bills. A CNG kit for your car can be fitted in two situations. The first is when buying a car fitted with a CNG kit right from the factory floor where the vehicle registration certificate and the car insurance policy will mention CNG as fuel type. Another option is to subsequently add one to your existing car. If you are someone who is researching CNG kits for your car, you’ve come to the right place. This article enlists details about the price, their usage and other critical information that you must be aware of.

What is the use of a CNG kit?

A CNG kit for cars allows owners to run their vehicles on either petrol or compressed natural gas, switching easily with the help of a fuel switch. This flexibility is beneficial for saving on running costs when petrol prices are high.

The kit includes parts such as a cylinder, regulator, high-pressure tube, valves, pressure gauge, hoses and clamps. Once installed, the cylinder stores compressed gas, which then passes through a regulator to adjust the pressure before entering the engine’s combustion chamber. In petrol engines, the spark plug ignites the CNG–air mixture, while sequential kits use ECU-controlled gas injection for smoother and more efficient performance.

The primary reason people opt for a CNG kit is to reduce fuel expenses. While the CNG kit price may seem like a significant upfront cost, it quickly balances out through long-term savings compared to petrol or diesel. It also offers environmental benefits, as CNG-powered vehicles release fewer pollutants, contributing to cleaner air. Since CNG is a gaseous fuel supplied via pipelines or cylinders, it is generally free from adulteration, ensuring consistent engine performance and safety.

Used correctly, a CNG kit makes driving more affordable, eco-friendly and reliable, making it a wise choice for cost-conscious and environmentally aware car owners.

What are the Types of CNG Kits that are Available?

Two types of CNG kits are available -

Venturi CNG kit

It is an affordable and easy-to-install option compared to other available alternatives. This kind of CNG kit installation is suitable for carburettors, as well as fuel-injected vehicles. Further, it does not require a separate ECU or electronic control unit to operate. However, this CNG kit requires frequent cleaning by experts. Thus, it is easy on your wallet in the short run, but requires maintenance.

Sequential CNG kit

It is another type which is regarded as a better alternative by automotive experts. A separate ECU controls the supply of the gas to the combustion chamber thereby maintaining the air-fuel ratio of your car. Fuel-injected cars are best suited for a sequential CNG kit. Since a separate ECU controls the supply of gas, better mileage and improved performance can be expected. However, additional components that make it better impact its overall cost.

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How to Select a CNG Kit for Your Car?

Choosing the right kit depends on your vehicle model and usage. The RTO-approved CNG kit price varies depending on whether you choose a Venturi kit or a Sequential CNG kit price option. Venturi kits are simpler and more affordable, but they require standard maintenance. In contrast, sequential kits offer better mileage and performance due to ECU control. Always ensure compatibility with your car, and get the installation done at an authorised centre to maintain safety and insurance compliance.

How does a CNG kit work?

A CNG cylinder is an additional assembly which is fitted in the boot of your car.

Fuel lines that run from the cylinder to the combustion chamber transfer the high-pressure gas.

A pressure gauge is fitted to regulate the pressure which is compatible with the car’s fuel injection system.

The transferred CNG moves to the combustion chamber wherein the spark plug ignites the engine and powers the vehicle.

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How much does it cost to fit a CNG kit?

The price of your CNG kits is based on the brand and the type of CNG kit. Generally, a company-fitted CNG kit will cost you an additional?60,000 to ?70,000, whereas an aftermarket sequential CNG kit will cost in the range of ?40,000 to ?50,000. When you choose to install aftermarket kits, remember that it voids your manufacturer’s warranty. On the contrary, company-fitted CNG kits come with an OEM warranty. *

A car fitted with a CNG kit requires periodic maintenance. Thus, it impacts the overall insurance premium. On average, fitting a CNG kit to your car will bump the motor insurance premium by 10%. However, this number varies with the model and the make of the car. *

Key Advantages of CNG Kits

Cost-Effective: CNG is significantly cheaper than petrol or diesel, leading to substantial savings over time.

Environmentally Friendly: CNG produces fewer harmful emissions, reducing your carbon footprint.

Reduced Risk of Fuel Adulteration: CNG is less susceptible to adulteration, ensuring optimal engine performance.

Drawbacks of CNG Kits

Higher Initial Cost: The installation and maintenance costs of a CNG kit can be higher.

Limited Infrastructure: The availability of CNG fueling stations may be limited in certain areas.

Reduced Power and Performance: CNG-powered vehicles may experience a slight decrease in power output, especially during acceleration.

Is Your Vehicle CNG-Compatible?

Considering the rising fuel costs, many are exploring the option of converting their petrol vehicles to CNG. While it's a promising solution, not all vehicles are suitable for such a conversion.

Factors Affecting CNG Compatibility

Vehicle Age and Model: Older vehicles may not be compatible due to technological limitations.

Engine Size: Bikes with mid to high-capacity engines might not benefit from CNG due to performance considerations. However, many scooters are compatible.

How to Determine Compatibility

The most reliable way to ascertain your vehicle's CNG compatibility is to consult your local Regional Transport Office (RTO). They maintain a list of approved vehicles for CNG conversion.

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Is a CNG Kit Suitable for Your Vehicle?

Not every vehicle is designed for conversion to CNG. Newer petrol models are generally compatible; however, older engines may experience performance issues. It’s advisable to check with your local RTO for approved vehicle lists before installing. Additionally, CNG cylinders are usually fitted in the boot/trunk but can also be installed under the car or in other safe locations, depending on the vehicle design and safety regulations. If you drive daily and want long-term fuel savings, the CNG kit fitting price is a worthwhile investment.

Conclusion

Making an Informed Decision Before proceeding with a CNG conversion, carefully weigh the pros and cons. Consider factors like your daily driving needs, the availability of CNG stations in your area, and the potential impact on your vehicle's performance. By considering these factors and seeking expert advice, you can make an informed decision about whether a CNG kit is the right choice for your vehicle.

FAQ's

How much does a CNG kit cost?

The price of a CNG kit in India varies widely depending on the type and brand. Basic Venturi kits cost between ₹15,000 and ₹35,000, sequential kits typically range from ₹33,000 to ₹50,000, and factory-fitted kits may cost ₹75,000 to ₹1,00,000. Installation charges, RC endorsement, calibration, and maintenance costs can add to the overall expense.

Does a CNG kit damage your car’s engine?

An RTO-approved CNG kit will not damage the engine if professionally installed and regularly maintained. CNG burns cleaner than petrol or diesel, reducing carbon deposits. However, neglecting scheduled maintenance may lead to damage to the valve or injector. Routine inspections are essential to ensure engine safety and efficiency.

How to install a CNG kit in the car?

Installation must be done at an authorised, RTO-approved fitment centre. The process includes mounting the cylinder, connecting high-pressure lines, adding regulators and injectors, and fitting an ECU in sequential systems. Post-installation involves leak tests and mandatory RC endorsement for safety compliance.

How much time will it take to fill a vehicle with a CNG kit?

Refuelling a CNG vehicle typically takes about 3 to 5 minutes, comparable to the refuelling times for petrol or diesel vehicles. However, actual time may vary due to station equipment, pressure capacity, and queue lengths during peak hours.

Is using CNG in a car safer than petrol or diesel?

Yes, CNG is safer because it has a higher auto-ignition temperature compared to petrol or diesel.

This reduces fire risk during accidents. Moreover, RTO-approved CNG cylinders comply with national safety standards such as BIS (Bureau of Indian Standards), ensuring safety and reliability.

How does installing a CNG kit affect my insurance premium?

Installing a CNG kit in your car may increase your motor insurance premium, typically around 10%, although the exact percentage varies depending on the vehicle model, insurer, and risk profile. Bajaj General Insurance requires you to declare and endorse the CNG modification in your Registration Certificate (RC) and update your insurance policy accordingly. Proper endorsement ensures comprehensive coverage for your CNG-fitted vehicle, protecting against damage, theft, or loss related to the CNG system. Failure to disclose the kit installation may result in the rejection of your claim.

*Standard T&C Apply

Claims are subject to terms and conditions set forth under the motor insurance policy.