VIN Number Year Codes: How to Decode the Model Year From a Vehicle Identification Number

Every vehicle sold in the United States carries a Vehicle Identification Number (VIN) — a 17-character string that encodes specific information about that vehicle. One of the most useful pieces of information buried inside that string is the model year. Knowing how to find and read the year code helps you verify what you're buying, cross-check title documents, and confirm whether recall notices or part numbers apply to your vehicle.

What Is a VIN and Where Do You Find It?

A VIN is a standardized 17-character identifier assigned to every motor vehicle manufactured after 1981. You'll find it in several places:

• Dashboard, visible through the windshield on the driver's side
• Driver's side door jamb (on a sticker or plate)
• Title and registration documents
• Insurance cards
• Engine block (stamped directly on some vehicles)

Each position in the VIN has a defined meaning. The format was standardized by the National Highway Traffic Safety Administration (NHTSA) and the International Organization for Standardization (ISO), so it applies universally to vehicles sold in North America.

Which Position in the VIN Is the Year Code?

The 10th character of the VIN represents the model year. That's always been the case under the post-1981 standardized system. Whether you're looking at a truck, passenger car, SUV, or motorcycle, position 10 is where you look.

How the Year Code Works 🔎

The year code uses a combination of letters and numbers, but not all letters are used. The system was designed to avoid characters that look similar to numbers, so the letters I, O, and Q are never used as year codes (they're too easily confused with 1, 0, and 0).

Here's the complete VIN year code chart:

The sequence runs from 1980 through 2009 using letters and digits, then repeats the same cycle starting in 2010. That 30-year repeat is why context matters — a VIN with the character "A" in position 10 could mean either a 1980 or a 2010 model year.

How to Tell the Two Cycles Apart

Because the cycle repeats, a 10th-position character alone doesn't always give you an unambiguous year. For example, both a 1995 and a 2025 model year vehicle would show "S" in position 10.

To distinguish them, you look at other parts of the VIN:

• Position 1–3 (World Manufacturer Identifier or WMI): This identifies the manufacturer and country of origin. A manufacturer that didn't exist in 1980 obviously didn't produce vehicles in that cycle.
• The model itself: If the nameplate didn't exist in the earlier cycle's timeframe, the earlier year is ruled out.
• Title documentation: The title on file with your state DMV will show the model year as recorded at the time of registration.
• Manufacturer records and VIN decoders: Automakers and third-party databases can resolve ambiguous cases using the full VIN string.

For most vehicles on the road today, the 2010–2039 cycle is the relevant one. Vehicles from the 1980–2009 cycle are generally older than 15 years, and the historical context makes the distinction clear in most real-world situations.

Model Year vs. Calendar Year

One common source of confusion: the model year is not the same as the year the vehicle was manufactured or sold. Manufacturers typically begin producing the next model year in the second half of the current calendar year. A vehicle built in October 2024 and sold in early 2025 may carry a 2025 model year designation.

This matters when you're:

• Ordering parts (a 2024-built vehicle with a 2025 model year needs 2025 parts)
• Checking recall notices (NHTSA organizes recalls by model year, not production date)
• Comparing insurance rates or registration fees, which some states calculate based on model year

Pre-1981 Vehicles

The standardized 17-character VIN system didn't take effect until 1981. Vehicles made before that year used manufacturer-specific numbering systems with no consistent format or position for the year code. Decoding a pre-1981 VIN requires referencing the specific manufacturer's documentation or a model-specific decoder for that brand and era.

What Shapes the Information You'll Find

Even with the year code in hand, how useful it is depends on a few variables:

• Manufacturer: Some automakers encode additional detail into surrounding VIN positions that helps confirm the year
• Vehicle type: Motorcycles, trailers, and heavy trucks follow the same VIN standard but may have manufacturer-specific interpretations of other positions
• Jurisdiction: State DMV records are the authoritative source for the year officially on file for your vehicle — and that's what matters for title, registration, and legal purposes
• Modifications and rebuilt titles: A vehicle that's been significantly altered or retitled may have documentation that doesn't match what the raw VIN suggests

Knowing how to read position 10 is a reliable starting point. Confirming the model year against official title records and manufacturer data is how you get the full picture for your specific vehicle.