Choosing a CNG kit for your car is a long-term decision. With multiple CNG kit companies operating in India, buyers need to compare more than just the upfront price.

A CNG conversion system includes several components such as an ECU, reducer, injectors, valves, sensors, cylinder and high-pressure lines. The compatibility of these components with the vehicle, along with installation quality and calibration, can influence the overall driving experience.

Among the brands Indian car owners may research are Gastech Italy, Motozen CNG and MIJO Auto Gas.

But which one should you choose?

There is no universal answer for every vehicle. The right CNG kit depends on the car, engine, injection system, applicable vehicle approval, system technology, installation quality, warranty and after-sales support.

This guide compares these three brands and explains what buyers should check before choosing a CNG kit.

Table of Contents

Quick Answer: How Should You Compare CNG Kit Companies?

When comparing Gastech Italy, Motozen CNG and MIJO Auto Gas, look at these factors:

Vehicle compatibility
CNG system technology
Certification and vehicle approvals
ECU and injector technology
Component quality
Installation and calibration
Warranty
Service network
Spare-parts availability
Complete installation cost

The most important point is that a CNG kit should be selected for the specific vehicle application, not simply because a particular brand is popular.

What Is a CNG Kit?

A CNG kit is a vehicle conversion system that allows a compatible petrol vehicle to operate using compressed natural gas.

Depending on the system, a CNG conversion can include:

CNG cylinder
Cylinder valve
Reducer or pressure regulator
CNG injectors
Electronic control unit (ECU)
Pressure and temperature sensors
Filling valve
Changeover switch
High-pressure pipe
Low-pressure hoses
Wiring harness
Filters and fittings

The exact components depend on the vehicle and CNG system.

For this reason, there is no single CNG kit configuration that works identically for every petrol car.

Why Does the CNG Kit Company Matter?

The manufacturer or brand can influence:

System technology
Component quality
Vehicle compatibility
Certification
Product documentation
Warranty
Technical support
Spare-parts availability
Dealer network

However, the manufacturer is only one part of the equation.

Installation and calibration are equally important.

A technically suitable kit can still deliver a poor ownership experience if it is incorrectly installed, poorly calibrated or not properly maintained.

Top CNG Kit Companies in India to Compare

For this guide, we are focusing specifically on:

Gastech Italy
Motozen CNG
MIJO Auto Gas

These companies have different product portfolios and published information, so they should be compared using the same criteria rather than treated as identical systems.

Quick Comparison

Factor	Gastech Italy	Motozen CNG	MIJO Auto Gas
CNG conversion systems	Yes	Yes	Yes
LPG systems	Yes	Published CNG focus	Yes
Sequential CNG	Available within product range	Core product focus	Available
Direct-injection CNG	Check exact application	Check exact application	Available for selected applications
Certification information	Published	Published	Published
Vehicle-specific fitment	Required	Required	Required
Warranty information	Check current terms	Product-specific terms published	Check current product/dealer terms
Dealer/service support	Published network	Published dealer network	Published nationwide network
Installation & calibration	Required	Required	Required
Final price	Vehicle-specific	Vehicle-specific	Vehicle-specific

This table is a starting point. Always verify the exact product, vehicle application and current documentation before installation.

1. Gastech Italy

Gastech Italy specializes in the design and manufacture of CNG and LPG conversion kits.

The company states that its products are certified to ISO 15500 standards and publishes references to ICAT, VCA, E13 110R-00166 and E13 67R018311 on its website. The exact scope and applicability should be verified against the specific product and vehicle application.

Gastech Italy also presents its products around efficiency, reliability and technology for CNG/LPG conversion.

What to Compare When Considering Gastech Italy

Before purchasing a Gastech Italy system, ask about:

Exact vehicle compatibility
Available CNG system
Applicable certification
Product configuration
Installation center
Calibration
Warranty
Service support
Spare parts
Complete installed price

The manufacturer’s website provides product and company information, but the final configuration should be confirmed for the specific vehicle.

2. Motozen CNG

Motozen Fuel Systems focuses strongly on sequential CNG systems in India.

Its website describes a sequential CNG system in which the CNG ECU is synchronized with the vehicle’s petrol ECU to control gas delivery. Motozen also lists components including a sequential reducer, ECU, injectors, changeover switch, filling valve, CNG gauge, cylinder and cylinder valve.

Motozen states that its sequential kits have ICAT approvals for specified vehicle applications and that its reducer is certified according to ISO 15500-9 through VCA. Its website also states that the company has a dealer network across India.

Motozen CNG: What Buyers Should Check

Before installation, verify:

Exact vehicle compatibility
Applicable ICAT approval
CNG system configuration
ECU and injector specifications
Installation center
Warranty conditions
Service availability
Replacement components

Motozen’s published product pages provide examples of product-level warranty terms. For example, its injector page states a 12-month or 20,000 km warranty, whichever occurs earlier, with installation by a certified Motozen RFC required for that warranty. Individual components can have their own terms, so buyers should confirm the warranty for the complete kit.

3. MIJO Auto Gas

MIJO Auto Gas offers multiple CNG system categories.

Its current four-wheeler product information identifies:

Conventional CNG
Sequential CNG
Direct Injection CNG

The company emphasizes that the appropriate system must be matched to the exact petrol vehicle and engine application.

MIJO also publishes information about its approval portfolio, including BS3, BS4 and BS6 CNG retrofit applications. Its current certification page states that it achieved a first-in-India BS6 CNG retrofit-kit approval and also provides product-level information for standards such as ISO 15500 and ECE R110.

MIJO Direct Injection CNG

One area that distinguishes MIJO’s current product portfolio is its Direct Drive 2.0 system for selected direct-injection petrol engines.

The company describes the system as using KME Poland direct-injection ECU technology with MIJO-selected CNG hardware and vehicle-specific calibration. Compatibility depends on the exact engine, model year, variant and validated configuration.

This is important because a turbocharged petrol engine does not automatically mean it is a direct-injection engine. The actual injection technology must be verified.

Gastech Italy vs Motozen CNG vs MIJO Auto Gas

The most useful way to compare these three companies is to examine the specific areas that matter to a CNG buyer.

Technology Comparison

Gastech Italy

Gastech Italy focuses on CNG and LPG conversion systems and publishes information about its technology and certification.

Motozen CNG

Motozen has a strong focus on sequential CNG systems. Its published product range includes the sequential reducer, ECU, injectors and associated CNG components.

MIJO Auto Gas

MIJO currently presents three main four-wheeler CNG categories:

Conventional
Sequential
Direct Injection

This means the system can be selected according to the vehicle’s injection technology and supported application.

What Does This Mean for Buyers?

Don’t choose a system simply because one technology sounds more advanced.

First determine:

What type of engine and injection system does my car use?

Then choose the CNG system designed for that application.

Sequential CNG vs Conventional CNG

One of the most common questions buyers ask is whether they should choose a sequential or conventional CNG kit.

Feature	Sequential CNG	Conventional CNG
Fuel control	Electronically controlled	Simpler gas/air mixing
ECU integration	Yes	More limited
Modern petrol vehicles	Commonly applicable	Vehicle-dependent
Calibration	More precise	Simpler
System complexity	Higher	Lower
Typical application	Modern compatible vehicles	Certain older vehicles

Sequential systems are generally designed to control gas injection electronically.

However, the appropriate system depends on the vehicle.

Do not install a sequential kit simply because it is considered more advanced. Confirm that the exact system is approved and compatible with your vehicle.

Direct Injection CNG: What Is It?

Direct-injection petrol engines require a different approach from conventional port-injected engines.

A direct-injection CNG system must account for the engine’s specific injection architecture.

MIJO currently offers a Direct Drive 2.0 system for selected direct-injection petrol engines. The company states that compatibility is dependent on the engine, model year, variant and validated configuration.

This is an important distinction:

Not every petrol car can use the same CNG kit.

Always check the exact engine and vehicle configuration before purchasing.

Certification and Vehicle Approval

Certification is one of the most important areas to investigate when comparing CNG kit companies.

But buyers should understand that:

Product certification and vehicle approval are not necessarily the same thing.

A component can have a particular certification while the complete retrofit application can have separate vehicle-specific approval requirements.

MIJO explicitly distinguishes product-level certification from vehicle approval on its certification page.

Motozen publishes information about ICAT approval for specified vehicle applications and ISO 15500-9 certification for its reducer.

Gastech Italy publishes ISO 15500, ICAT, VCA and E13-related compliance information on its website.

What Should You Ask the Dealer?

Before installation, ask:

What is the exact kit model?
Is this kit approved for my vehicle?
What is the manufacturing/model-year scope?
What emission standard does the approval cover?
Can I see the applicable certificate?
What documents will I receive?
What is required for RC endorsement and insurance?

Never assume that a general statement such as “ICAT approved” means every vehicle is automatically covered.

CNG Kit Installation: Why It Matters

The quality of installation can affect the safety, reliability and performance of a CNG conversion.

The installation process may involve:

Cylinder mounting
High-pressure line installation
Reducer installation
Injector installation
ECU installation
Electrical connections
Filling-valve installation
Sensor installation
Leak testing
ECU calibration
Road testing

The installer should follow the manufacturer’s requirements and applicable procedures.

Before choosing an installation center, ask:

Is the installer authorized or trained?
Does the workshop regularly install this specific system?
Is calibration included?
Is leak testing performed?
Will I receive installation documentation?
What happens if the system requires recalibration?

CNG Kit Warranty: What Should You Compare?

Warranty is often overlooked because buyers focus on the initial price.

Instead, ask:

What is the warranty period?

Find out whether the warranty is:

Time-based
Distance-based
Or whichever comes first

Which components are covered?

A warranty for one component may not mean the entire kit has identical coverage.

Are there installation conditions?

Some manufacturers require installation through authorized or certified installers.

Motozen, for example, states on some product pages that warranty coverage requires installation through a certified Motozen RFC.

What voids the warranty?

Ask about:

Unauthorized modifications
Improper servicing
Non-approved components
Installation by unauthorized workshops
Maintenance requirements

Always obtain the warranty terms in writing.

After-Sales Support: Why It Matters

CNG conversion is not a one-time transaction.

After installation, the system may require:

Periodic inspection
Calibration
Filter replacement
Injector inspection
Reducer servicing
Leak checks
Diagnostic support
Replacement components

This makes after-sales support an important factor when comparing brands.

Gastech Italy vs Motozen vs MIJO: Service Support

Gastech Italy

Gastech Italy publishes information about its dealer and customer-support network and positions its products for the Indian market.

Motozen

Motozen states that it has a dealer network across India and lists approved states and its Delhi location on its website.

MIJO

MIJO currently states that it has a 1,000+ dealer network, more than one million customers and operations supporting vehicle systems in India and international markets. These are company-reported figures and should be understood as such.

What Should a Buyer Do?

Don’t select a company based on the size of its network alone.

Instead, check:

Is there an authorized or qualified installer near me?

Can I get spare parts locally?

Can I receive technical support?

How are warranty claims handled?

Local support can be more important than a company’s national network size.

CNG Kit Price Comparison

Price varies according to:

Vehicle
Engine
CNG system type
Cylinder
ECU
Injectors
Reducer
Installation
Calibration
Documentation
Location
Taxes

Therefore, it is difficult to provide one universal price for all three brands.

For example, MIJO currently publishes indicative dealer-fitment ranges for different system categories, including approximately ₹30,000–₹35,000 for conventional systems, ₹40,000–₹70,000 for sequential systems and ₹1,25,000–₹1,50,000 for selected direct-injection systems. The company states that final pricing depends on the vehicle, configuration, cylinder, components, installation, taxes and local requirements.

These figures should be treated as indicative, not as a universal market price.

For Gastech Italy or Motozen, obtain a vehicle-specific quotation from the applicable dealer.

What Should a Complete CNG Kit Quote Include?

When comparing quotations from Gastech Italy, Motozen or MIJO, ask the dealer to list:

CNG ECU
Reducer
Injector rail
Cylinder
Cylinder valve
Filling valve
Pressure gauge/sensor
High-pressure pipe
Low-pressure hoses
Wiring
Fittings
Installation
Calibration
Testing
Taxes
Warranty
Documentation

This allows you to compare the actual package, rather than comparing three headline prices.

Gastech Italy vs Motozen CNG vs MIJO Auto Gas: Comparison Checklist

Factor	What to Verify
Brand	Manufacturer and product identity
Vehicle compatibility	Exact model, engine and year
System type	Conventional, Sequential or Direct Injection
Certification	Applicable product certification
Vehicle approval	Exact approved application
ECU	Model and compatibility
Injectors	Model and flow requirements
Reducer	Compatible with engine demand
Cylinder	Specification and documentation
Installation	Authorized/qualified installer
Calibration	Included and properly performed
Warranty	Period, components and exclusions
Service	Nearest service center
Spare parts	Availability
Price	Complete installed quotation

How to Choose Between Gastech Italy, Motozen and MIJO

Rather than asking which company is “number one,” use this decision process.

Step 1: Identify Your Vehicle

Record:

Make
Model
Year
Engine
Engine displacement
Fuel system
Emission standard
Transmission

Step 2: Identify the Correct CNG Technology

Determine whether your vehicle requires:

Conventional CNG
Sequential CNG
Direct Injection CNG

Do not make this decision based solely on the vehicle’s fuel type.

Step 3: Verify Approval

Ask each dealer to provide the applicable documentation for your exact vehicle.

Step 4: Compare Installation Centers

Visit or call the installer.

Ask about:

Technician experience
Installation process
Calibration
Leak testing
Warranty support

Step 5: Compare Warranty

Read the actual warranty terms.

Don’t rely only on statements such as “one-year warranty.”

Step 6: Check After-Sales Support

Find the nearest service center.

Also ask whether spare components are readily available.

Step 7: Compare Complete Cost

Compare the total installed cost, not just the kit price.

Common Mistakes When Buying a CNG Kit

1. Choosing Only on Price

A low purchase price does not automatically mean lower ownership cost.

2. Ignoring Vehicle Compatibility

A kit designed for another engine may not be suitable for your car.

3. Assuming Every Sequential Kit Is the Same

Different ECUs, injectors, reducers and calibration systems can have different specifications.

4. Ignoring Installation Quality

Installation is a critical part of the conversion.

5. Not Reading the Warranty

Understand the coverage before installation.

6. Assuming Certification Means Universal Approval

Certification and vehicle-specific approval are separate considerations.

7. Believing Guaranteed Mileage Claims

Actual mileage varies with the vehicle, engine, driving conditions, traffic, load and calibration.

8. Ignoring After-Sales Service

A CNG system needs ongoing maintenance and support.

12 Questions to Ask Before Buying a CNG Kit

Before choosing Gastech Italy, Motozen or MIJO, ask the dealer:

1. Is this kit approved for my exact vehicle?

2. Which CNG system is being installed?

3. What ECU and injectors are included?

4. Which reducer is included?

5. What cylinder specification will be used?

6. What certifications apply to this installation?

7. Who will install the kit?

8. Is calibration included?

9. What is the complete warranty?

10. Where is the nearest service center?

11. Are spare parts available locally?

12. What is the complete installed price?

Getting these answers before payment can prevent many problems later.

Which CNG Kit Company Is Right for You?

The answer depends on your vehicle and priorities.

Consider Gastech Italy if you are evaluating:

CNG/LPG conversion systems
Published certification information
Technology and component options
Indian-market support
Dealer/service availability

Consider Motozen CNG if you are evaluating:

Sequential CNG systems
ECU and injector-based systems
Published ICAT approval information
Product-level warranty information
Dealer and installation support

Consider MIJO Auto Gas if you are evaluating:

Conventional CNG
Sequential CNG
Direct Injection CNG
Vehicle-specific system matching
Published BS3, BS4 and BS6 approval information
A broad dealer/support network

These are comparison categories, not rankings. The correct choice should be based on your specific vehicle and the documentation available for the proposed installation.

Frequently Asked Questions

Which are the top CNG kit companies in India?

Gastech Italy, Motozen CNG and MIJO Auto Gas are three companies that car owners can research when comparing CNG conversion systems. Their product portfolios and system configurations differ, so buyers should compare vehicle compatibility, technology, certification, warranty and after-sales support.

Which CNG kit company is best?

There is no single CNG kit company that is best for every vehicle. The appropriate choice depends on the exact car, engine, approved system, installation quality, warranty and service availability.

What is the difference between Gastech Italy, Motozen and MIJO?

Gastech Italy offers CNG/LPG conversion systems and publishes certification and product information. Motozen has a strong focus on sequential CNG systems and publishes information about its sequential components and approvals. MIJO offers conventional, sequential and direct-injection CNG systems for supported vehicle applications.

Which CNG kit is best for a modern petrol car?

The answer depends on the engine and injection system. Many modern port-injected petrol vehicles use sequential CNG systems, while selected direct-injection engines require a dedicated DI CNG system. Compatibility should always be confirmed for the exact vehicle.

Is a sequential CNG kit better than a conventional CNG kit?

A sequential system can provide electronically controlled gas delivery and is commonly used for suitable modern petrol vehicles. However, it is not automatically appropriate for every vehicle. The correct system depends on the vehicle’s engine and approved application.

Does MIJO offer Direct Injection CNG?

Yes. MIJO currently offers its Direct Drive 2.0 system for selected direct-injection petrol engines. The company states that compatibility depends on the engine, model year, variant and validated configuration.

Does Motozen offer sequential CNG kits?

Yes. Sequential CNG is a major focus of Motozen’s product range. Its website lists sequential reducers, ECU, injectors, filling valves, gauges and other components.

What certifications should I check for a CNG kit?

Ask for the applicable product certification and vehicle-specific approval documentation. Depending on the system, manufacturers may reference standards such as ISO 15500 or ECE regulations and approvals from organizations such as ICAT. Verify the exact certificate and scope for your vehicle.

Is CNG kit installation important?

Yes. Proper installation, leak testing, calibration and final system checks are essential parts of a CNG conversion.

How much does a CNG kit cost?

There is no single price for every vehicle. Cost depends on the vehicle, system type, components, cylinder, installation and location. Always request a complete vehicle-specific quotation.

Does the CNG kit price include the cylinder?

Not necessarily. The dealer quotation should clearly state whether the cylinder, cylinder valve, brackets, filling hardware, installation and other components are included.

How long is a CNG kit warranty?

Warranty terms vary by company, product and component. For example, Motozen publishes 12-month warranty information on some individual components, subject to stated installation conditions. Buyers should request the complete kit warranty in writing.

Why is after-sales service important?

CNG systems may require periodic servicing, calibration, inspection and replacement of components. A local service network can make long-term maintenance easier.

Can every petrol car be converted to CNG?

No. Compatibility depends on the vehicle, engine, injection system, model year, emission standard and applicable approval. Always confirm compatibility before purchasing a kit.

Does a turbo petrol engine require a Direct Injection CNG kit?

Not necessarily. Turbocharging and direct fuel injection are different technologies. A turbocharged engine can use port injection or direct injection. The actual petrol injection system must be identified before selecting the CNG system.

Can I compare CNG kits only by mileage?

No. Mileage is affected by the vehicle, engine, driving style, traffic, load, tire pressure, air-conditioning use and calibration. Compare the complete system and ownership cost rather than relying on a single mileage claim.

What should I check after CNG installation?

Check that the system switches correctly between fuels, the engine runs smoothly, there are no warning lights or leaks and the installer has completed calibration and testing. Keep all applicable installation and approval documents.

Final CNG Kit Buying Checklist

Before installing a CNG kit, confirm:

Exact vehicle compatibility
Correct CNG technology
Applicable certification
Vehicle-specific approval
Complete component list
Qualified installation
Calibration
Leak testing
Written warranty
Local service center
Spare-parts availability
Complete installed quotation
Applicable registration documentation

Final Thoughts

Choosing between Gastech Italy, Motozen CNG and MIJO Auto Gas should not be reduced to a simple question of which brand has the lowest price or the biggest marketing claim.

Instead, compare the complete system.

Look at:

Technology + Vehicle Compatibility + Certification + Installation + Calibration + Warranty + Service + Total Cost

Gastech Italy publishes information about its CNG/LPG conversion systems and certification. Motozen focuses strongly on sequential CNG systems and publishes product and approval information. MIJO offers conventional, sequential and direct-injection CNG systems with vehicle-specific application guidance.

The right choice ultimately depends on your specific vehicle and the exact kit configuration offered by the manufacturer or authorized/qualified installer.

Before paying for installation, ask for the vehicle-specific compatibility, applicable approval documents, complete component list, written warranty and total installed quotation.

That is a much more reliable way to choose a CNG kit than selecting a brand based only on price or advertising.

About Gastech Italy

Gastech Italy specializes in CNG and LPG conversion systems and publishes information about its products, technology and certification on its official website. The company states that its products are certified to ISO 15500 standards and references ICAT, VCA and E13-related compliance information.

To determine whether a Gastech Italy system is suitable for your vehicle, contact the company or an applicable dealer and request vehicle-specific compatibility, pricing, installation and warranty information.