VIN Position 10: Model Year Code Explained
A federal-rule and NHTSA-source explanation of what this VIN section means, how to verify it, and where interpretation stops.
Use the complete 17-character VIN and manufacturer context before treating any character as a conclusion.
VIN position 10 represents the manufacturer-designated model year under the U.S. VIN standard. The code cycles through permitted letters and numbers, so the tenth character is not unique across all decades. For passenger cars, multipurpose passenger vehicles, and light trucks covered by the rule, position 7 helps distinguish the 1980–2009 cycle from the 2010–2039 cycle: a numeric position 7 points to the earlier range, while an alphabetic position 7 points to the later range. Model year is a product designation and can differ from the calendar build date.
What position 10 can establish
- The model-year code excludes I, O, Q, U, and Z and repeats on a cycle.
- A 2026 model year uses T under the current federal table; the code should always be interpreted with the complete VIN and vehicle context.
- Model year does not necessarily equal the year printed on a component, sale date, registration date, or calendar build date.
- Pre-standard vehicles and certain imported vehicles may not follow the modern 17-character U.S. pattern.
How to interpret the result
A vehicle assembled late in one calendar year can be designated as the following model year. Use the tenth character with NHTSA decoding, certification-label dates, and manufacturer information instead of guessing from registration timing.
Verification checklist
- Read the full 17-character VIN.
- Locate character 10.
- Use the federal year-code table.
- Use position 7 and vehicle context to resolve the cycle when applicable.
- Compare the decoded model year with the title and certification label.
Limits of position 10
- Position 10 does not identify the exact production month or first-sale date.
- It does not prove trim, title year, condition, ownership, or warranty start date.
- Because codes repeat, the character alone cannot distinguish every possible decade.
Federal VIN structure sources
Open the underlying public source and verify that its scope matches the question you are asking.
Model year code questions
Which VIN position shows model year?
Position 10 represents the model year under the U.S. 17-character VIN standard.
Why do VIN year codes repeat?
The permitted character sequence is reused in cycles. That is why the complete VIN, position 7 rule where applicable, and vehicle context matter.
Is model year the same as build year?
Not necessarily. Model year is the manufacturer’s designation for a vehicle model; the physical build date can fall in a different calendar year.
Can position 10 prove the title is correct?
It can expose a mismatch, but it does not validate the title by itself. Confirm the full VIN, certification label, and official title records.