RC · 5 min read

Decode Your Vehicle's VIN / Chassis Number — What Each Digit Means | Vehicle Information

Every vehicle sold in India has a unique 17-character VIN (Vehicle Identification Number), also called chassis number. It's stamped on the body and printed on the RC. Learning to read it helps you spot tampered vehicles, verify model year and check factory of origin — especially when buying second-hand.

Where to find your VIN

Open the bonnet — VIN plate is typically near the firewall or on the engine block. On bikes, it's stamped on the frame near the steering column. Also printed on RC in 'Chassis No.' field.

Position 1-3 — World Manufacturer Identifier (WMI)

First 3 characters tell you the country and maker. Examples: MAT = Tata Motors India, MAH = Mahindra, MA3 = Maruti Suzuki, MBL = Hero MotoCorp, ME1 = Yamaha India, MD2 = Bajaj.

Position 4-9 — Vehicle Descriptor

Encodes vehicle type, body, engine, transmission, restraint system. Each manufacturer uses its own scheme. Position 9 is often a 'check digit' to detect tampering.

Position 10 — Model Year

Single character: A=1980, B=1981 ... Y=2000, 1=2001, 2=2002 ... 9=2009, A=2010, B=2011 ... Y=2030. (After Z, returns to A — 30-year cycle.)

Position 11 — Plant of Manufacture

Single character indicating factory. For Tata: A=Pune, F=Lucknow, T=Sanand. For Maruti: G=Gurugram, M=Manesar, S=Suzuki Motor Gujarat.

Position 12-17 — Serial Number

Sequential production number. Two adjacent vehicles off the same assembly line will differ in these 6 digits only. Use this to detect duplicate-VIN fraud (two vehicles claiming same VIN).

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Frequently asked questions

Why does my chassis number have only 17 characters?
International standard ISO 3779 mandates exactly 17 characters. India follows this since 1985. Older vehicles (pre-1985) may have shorter numbers.
I and O and Q are missing — why?
ISO 3779 excludes I, O, Q because they look too similar to 1, 0, 0. Reduces transcription errors.
What if VIN on body doesn't match RC?
Major red flag. Either the RC is fake or the body has been swapped (e.g. after major accident). Walk away from the purchase.
Can I look up a VIN online for free?
Yes — Parivahan and the Vehicle Information app accept either RC number or chassis number for lookup. App is fastest.
What's the difference between VIN, chassis number and frame number?
Same thing on cars. On bikes, frame number = chassis number. Engine number is separate (stamped on the engine itself).

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