VIN 10th Digit Chart: How to Decode Your Vehicle's Model Year

Every vehicle sold in the United States carries a 17-character Vehicle Identification Number (VIN). Each position in that string encodes specific information about the vehicle — and position 10 is one of the most practically useful digits you'll encounter as a vehicle owner, buyer, or repair customer.

What the 10th Digit of a VIN Actually Tells You

The 10th digit of a VIN identifies the model year of the vehicle. This applies to all passenger cars, light trucks, SUVs, and motorcycles manufactured for sale in the U.S. market — regardless of make or country of origin — under the standardized system established by the National Highway Traffic Safety Administration (NHTSA).

This is distinct from the calendar year. A 2024 model year vehicle might roll off the assembly line in mid-2023. The 10th digit reflects the model year designation, not when the vehicle was physically built.

🔑 VIN 10th Digit Chart: Full Model Year Reference

The 10th digit cycles through letters and numbers in a specific sequence. The letters I, O, Q, U, and Z are never used — they're excluded to avoid confusion with the numbers 1, 0, and other characters.

The cycle repeats every 30 years. The sequence ran through A–9 from 1980–2009, then restarted at A in 2010. That means the letter A represents both 1980 and 2010, B represents both 1981 and 2011, and so on.

Why This Matters for Maintenance and Repairs

Knowing the model year from the VIN matters in several practical situations:

Parts compatibility. Even within the same nameplate, manufacturers change components, sensors, software calibrations, and trim configurations between model years. A mechanic or parts counter associate will ask for model year — and the VIN-decoded year is the authoritative answer, not just what's on the title or the seller's listing.

Recall and TSB lookups. Technical Service Bulletins (TSBs) and safety recalls are indexed by model year. If you're looking up an open recall or a known issue for your vehicle, using the correct model year from position 10 ensures you're checking the right database entries.

Warranty coverage. Manufacturer warranties, extended warranties, and powertrain coverage are tied to model year and in-service date. The 10th digit helps confirm which coverage window applies.

Buying a used vehicle. A VIN that doesn't match the stated model year on a listing or title is a red flag worth investigating before purchase.

How to Locate the VIN and Find Position 10

The VIN appears in several standard locations:

• Driver's side dashboard, visible through the windshield at the base
• Driver's door jamb sticker
• Engine bay, typically on the firewall
• Title, registration documents, and insurance cards

Once you have the full 17-character VIN, count to the 10th character from the left. Cross-reference it against the chart above.

The Ambiguity Factor for Older and Pre-1981 Vehicles 🔍

Vehicles manufactured before 1981 did not follow the standardized 17-digit VIN format. Older vehicles used shorter, manufacturer-specific sequences that varied in length and structure. The 10th digit rule only applies reliably to vehicles from model year 1981 onward.

For pre-1981 vehicles, decoding the production year requires referencing manufacturer-specific guides or historical resources for that particular make.

Where the 30-Year Repeat Creates Real Confusion

Because the sequence resets, a vehicle with A in position 10 could be a 1980 model or a 2010 model. For any vehicle produced in the last decade or two, this rarely causes confusion in practice. But for salvage titles, older restorations, or vehicles with unclear documentation, the surrounding digits matter. Position 7 through 9 encode the vehicle's features and assembly plant, and positions 1–3 identify the manufacturer — together, those characters help confirm whether a letter like B or C belongs to the early-1980s cycle or the 2010s cycle.

What the Other VIN Positions Tell You

The 10th digit is the model year, but the full VIN encodes considerably more:

What This Doesn't Tell You

The model year encoded in position 10 is a starting point, not a complete picture. It doesn't tell you:

• Which specific engine or trim package is installed (that's in positions 4–8)
• Whether the vehicle has been modified, rebuilt, or had a powertrain swap
• The vehicle's actual condition, service history, or maintenance status

Two vehicles with identical 10th digits — same model year, same make and model — can have significantly different reliability and repair needs depending on how they've been maintained, where they've operated, and how many miles they've accumulated. The model year is one data point. The full story of a specific vehicle requires more than the VIN alone can provide.