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- Comprehend the meaning of WMI Certification and the reason for every automobile manufacturer to obtain a World Manufacturer Identifier (WMI) to be known worldwide.
- Discover how the WMI VIN Number is the foundation of the 17 digit Vehicle Identification Number (VIN).
- Review the complete process, benefits, documents, and compliance guide to getting WMI Certification in India.
Introduction
A few years ago, an Indian electric scooter company completed its first 1000 units. They were ready to ship overseas — until customs stopped the consignment. The reason? Their VIN numbers were invalid, as the WMI code they used wasn’t officially registered. What seemed like a small code issue turned into weeks of delay, additional paperwork, and lost credibility with the client.
That single incident revealed how crucial WMI Certification is. The World Manufacturer Identifier (WMI) isn’t just a string of characters — it’s a globally recognized proof of identity for your brand in the automotive ecosystem. Without it, your vehicles can’t be officially tracked, exported, or even registered in many countries.
This blog explains everything a manufacturer — big or small — needs to know about WMI Certification, VIN numbers, registration process, documents, and how it impacts your business and compliance standing.
What is WMI Certification?
WMI Certification is an abbreviation for World Manufacturer Identifier Certification – an official registry that provides a distinct identification code for each automobile manufacturer.
This code then becomes the first three characters of a vehicle’s VIN (Vehicle Identification Number), and it indicates:
- The country of manufacture
- The manufacturer or brand
- The type or category of vehicle
In simple terms, your WMI is like your factory’s passport — it tells the world who built the vehicle and where it was made.
Understanding the VIN (Vehicle Identification Number)
Every modern vehicle carries a unique 17-character VIN number, which serves as its fingerprint. The VIN stays with the vehicle throughout its life, appearing on registration documents, insurance records, and recall notices.
A VIN is divided into three sections:
| Section | Characters | Meaning |
| WMI | 1–3 | Identifies the manufacturer and country |
| VDS (Vehicle Descriptor Section) | 4–9 | Describes model, engine, body type, etc. |
| VIS (Vehicle Identifier Section) | 10–17 | Provides unique serial number, year, and plant info |
So, the WMI forms the foundation of this system — it’s what makes each VIN traceable to a verified manufacturer.
Example of a VIN Number
Let’s take a sample VIN:
MAHAA1E56R000251
Breaking it down:
- MAH – The WMI (Manufacturer code; “MA” for India, “H” for the manufacturer)
- AA1E56 – Vehicle Descriptor Section (model, type, engine)
- R000251 – Vehicle Identifier Section (year, plant, and unique number)
If your WMI is invalid, the entire VIN becomes non-compliant — hence the importance of official WMI Certification.
Why WMI Certification Is Important?
- Global Recognition
Without WMI Certification, your vehicles cannot be registered or sold internationally. It ensures your brand is listed in the global manufacturer database. - Traceability & Authenticity
Each VIN connects back to an approved WMI, allowing regulators and customers to verify the vehicle’s origin. - Compliance with ISO & Automotive Standards
ISO standards such as ISO 3780 and ISO 3779 define WMI and VIN structure. Certification ensures your vehicles meet these global norms. - Prevention of Fraud & Cloning
Fake or cloned VINs can be traced and identified easily when WMIs are properly registered. - Facilitates Export Approvals
For export-oriented manufacturers, WMI Certification is mandatory to clear customs in most countries. - Improves Brand Image
A valid WMI reflects professionalism, authenticity, and compliance — traits that international buyers expect.
Who Needs WMI Certification in India?
Any Indian company that manufactures:
- Passenger vehicles (cars, SUVs)
- Two-wheelers or three-wheelers
- Electric vehicles (EVs)
- Commercial vehicles (trucks, buses)
- Agricultural or construction machinery
- must apply for WMI Certification before rolling out vehicles for sale or export.
Even component manufacturers assembling complete vehicles under contract may need their own WMI if the final vehicle bears their branding.
Importance of WMI Certification (World Manufacturer Identifier)
WMI Certification is a requirement of every vehicle manufacturer as it provides a globally recognized identity participating in the Vehicle Identification Number (VIN) scheme. WMI Certification ensures each vehicle has a traceable marker back to its manufacturer, in accordance with worldwide standards, and provides transparency to the automotive industry.
1. Global Manufacturer Identity
A WMI gives each manufacturer a global code, recognized in all regions, so that customers can identify the corporate name regardless of the jurisdiction where the manufacturer is based. The WMI is the first, three digits of almost every VIN and designates both the country of manufacture and manufacturer identified.
2. Legal and Regulatory Requirement
WMI Certification is required of all vehicle Manufacturers per ISO 3780 standards. Vehicles cannot legally be registered, exported, or sold without WMI Certification.
3. Foundation of VIN (Vehicle Identification Number)
The VIN is prefaced by a WMI code, making it the basis for all vehicle registration, insurance, and traceability in the world.
4. Boosts Brand Credibility
A valid WMI shows compliance with international norms, building trust and brand authenticity among customers and government authorities.
5. Enables Global Trade and Export
Vehicles without a registered WMI cannot enter foreign markets. It’s a must for manufacturers involved in exports or global distribution.
6. Supports Safety Recalls and Tracking
In the event of recalls or safety concerns, WMI-coded VINs can assist authorities and manufacturers in promptly and accurately identifying affected batches.
7. Prevents Fraudulent Identification
WMI ensures each vehicle is uniquely traceable, minimizing risks of cloned or fake VIN numbers.
8. Required for EV and New Manufacturers
Startups, particularly in the electric vehicle (EV) space, are required to have WMI when gaining type approval or homologation.
9. Ensures Compliance and Accuracy of Data
WMI provides a uniform basis for vehicle identification globally, meeting standards established by ISO, UNECE, and NHTSA standards to ensure accuracy of data and regulatory reporting.
The Authority Behind WMI Certification
In India, the Bureau of Indian Standards (BIS) acts as the national coordinator for WMI registration.
Globally, SAE International (Society of Automotive Engineers) maintains the central WMI database. When BIS approves an Indian manufacturer’s request, it communicates the details to SAE, ensuring the manufacturer appears in the global WMI registry.
This ensures your vehicles are recognised not only in India but worldwide.
Documents Required for WMI Certification
When applying for WMI Certification, prepare the following documents:
- Company Registration Certificate (Incorporation / Udyam)
- GST Certificate
- Address Proof of manufacturing site
- Product details or vehicle category
- Proof of ownership of manufacturing unit
- Authorized signatory ID proof
- Sample VIN structure (how you’ll use the WMI)
- Proof of production capacity or project report
- Fee payment proof
Make sure all documents are valid, signed, and submitted as per BIS requirements.
Process of WMI Certification in India
Here’s a step-by-step guide for manufacturers:
Step 1: Application Preparation
Gather relevant documents and fill out the WMI application, clarifying the vehicle type and manufacturing capacity.
Step 2: Application Submission
Forward your completed application to BIS along with the applicable fees.
Step 3: Document Verification
BIS will review all of your documents and request to verify your manufacturing details, capacity, and legitimacy.
Step 4: Code Assignment
Once approved, BIS will assign you a unique 3-character WMI based on availability.
Step 5: Global Registration
BIS will then forward the code to SAE International where it will be logged into its global database.
Step 6: Certification Process
BIS will provide you with an official WMI Certification Letter, which confirms your registration and that of your WMI code.
Step 7: Use Implementation
You can now use your assigned WMI in your VIN structure and label all vehicles accordingly.
Validity and Renewal
- Validity Period: The WMI Certification is valid as long as the manufacturer is still in business.
- Renewal Requirement: A WMI must be updated or revalidated with BIS if there is a substantial change of ownership of the company, product category, or plant location.
- Cancellation: Reviews may be started or a manufacturer may lose WMI Certification for either discontinuing operations, falsely using the WMI, or other misuse.
Cost and Timeline
- Application Fee: Typically nominal fees as stated by BIS.
- Processing Time: Most often within 4–8 weeks, based on completing documentation.
- Additional charges may apply for revalidation, modification, or duplicate certificate.
(Note: The actual cost depends on government updates. Check the BIS website for official information.)
Benefits of WMI Certification for Manufacturers
| Benefit | Description |
| Global Recognition | Vehicles are recognized in the international VIN registry. |
| Export Eligibility | Simplifies customs and import clearance for global trade. |
| Traceability | VIN tracking allows recall and defect management. |
| Brand Trust | Reflects authenticity and compliance. |
| Legal Protection | Prevents misuse or duplication of manufacturer identity. |
Key Features of an Ideal VIN System
A good VIN system built around your WMI should:
- Follow 17-character ISO standard.
- Use logical sequences for production tracking.
- Avoid duplication across plants or years.
- Include a checksum (digit 9) for validity.
- Clearly show model year and manufacturing plant.
For example, if your WMI is MAZ, your VINs could look like:
MAZEX4H73S1234567
- “MAZ” – Manufacturer (WMI)
- “EX4H7” – Model details
- “3S1234567” – Serial and year info
How to Verify a WMI or VIN Number
To check whether a WMI is valid:
- Use the SAE International WMI lookup tool.
- Cross-check with BIS or relevant national authority records.
- For VIN verification, ensure:
- Correct 17-character length
- Proper WMI prefix
- Valid check digit
- Correct year code
Common Mistakes to Avoid
- Using Unregistered Codes
Never assign a self-created WMI without official approval. It can lead to rejection of your vehicles in international markets. - Incorrect VIN Structure
Mixing letters like “I” or “O” can make VINs invalid, as they resemble numbers. - Duplicate Serial Numbers
Each VIN must be unique. Duplicate entries cause tracking issues. - No Update After Change
If your company changes ownership or product type, you must update your WMI record immediately.
How WMI Certification Impacts Exports?
Exporting vehicles without a valid WMI is like shipping goods without a barcode — customs officials cannot verify the manufacturer.
With a registered WMI, your vehicles:
- Get faster customs clearance
- Meet import regulations in the destination country
- Build trust with global buyers
- Qualify for government export incentives
Why Diligence Certifications is the Right Partner?
Diligence Certifications assists manufacturers in obtaining WMI Certification seamlessly.
Our experts help you with:
- Document preparation and review
- Application filing with BIS
- Liaison with SAE International
- VIN structure design as per ISO standards
- Post-approval compliance guidance
We also ensure your certification aligns with your other quality standards such as ISO 9001, IATF 16949, or CE Marking, ensuring end-to-end automotive compliance.
Visit: Diligence Certifications – Automotive Compliance Services
Conclusion
WMI Certification is more than a code; it’s a manufacturer’s identity in the auto industry. Vehicles can’t be tracked, registered, or exported legally without it. By obtaining your World Manufacturer Identifier, you’re aligning your business with international standards, improving credibility, and protecting your business by maintaining compliance for years to come.
If you are an automobile or EV manufacturer in India that requires assistance with WMI Certification, VIN design, or documentation, contact Diligence Certifications today — your trusted compliance partner with global automotive standards.
Frequently Asked Questions
What is WMI Certification?
WMI Certification is an official registration that gives a unique manufacturer code for use in vehicle VIN numbers.
Is WMI Certification required in India?
Yes. Each vehicle manufacturer is required to obtain WMI Certification from BIS prior to selling or exporting vehicles.
What is the number of characters in a VIN?
A VIN contains 17 characters, with the first 3 characters representing the WMI.
Can a manufacturer have multiple WMIs?
Yes, if the manufacturer has more than one manufacturing plant, or the manufacturer produces more than one type of vehicle.
How long does it take to obtain a WMI Certification?
The average timeframe is 1 to 2 months, depending on the processing time of BIS.
What happens if I do not have a valid WMI?
Vehicles may have difficulties exporting and getting registered, and may not be made in compliance.
What documents are needed?
GST, incorporation certificate, product details, and factory proof are essential.
Is renewal required?
Renewal is only needed if company or ownership changes occur.
Does the WMI apply to electric vehicles?
Yes. Every EV manufacturer must register for a WMI before sale or export.
Can Diligence Certifications help with WMI registration?
Absolutely. Diligence Certifications provides complete documentation, submission, and liaison support for quick approvals.
