VIN check digit X

Client

When the weighted sum mod 11 equals ten, the check symbol is letter X—not digit zero. Paste VINs containing X to confirm the arithmetic matches.

When X appears

Compute sum mod 11. Remainders 0–9 print as digits. Remainder ten prints as X at position nine only.

Privacy: parsing runs only in your browser. This page does not query DMV, insurance, or manufacturer databases—only the published mod-11 rule for the ninth character.
?

After removing spaces and hyphens, the frame must be exactly 17 characters. Letters I, O, and Q are forbidden everywhere. Position 9 (index 8) is the check symbol: decimal 0–9 or X for remainder ten. Each symbol maps to a numeric value, is multiplied by a fixed weight for its position, products are summed, and sum mod 11 must equal the check symbol’s value (X → 10).

Result

Passes check digit — weighted sum mod 11 is 10; expected X.

  • WMI (positions 1–3): 1HG
  • Attributes (4–8): BH41J
  • Check (9): X
  • Model year code (10): M
  • Plant (11): N
  • Sequential (12–17): 109186

Common use cases

  • Explain X to staff who reject non-numeric check symbols.
  • Validate frames copied from specs showing X at position nine.

Common mistakes to avoid

  • Replacing X with 0 to force numeric-only forms

    X is valid at position nine when the algorithm demands remainder ten.

FAQ

Can a VIN check digit be X?

Yes—X represents ten in the mod-11 check position.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • vin check digit verifier online
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  • vehicle identification number check digit locally

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