World Manufacturer Identifier (positions 1–3)

The first character marks the country of assembly. JN1 and JN8 mark Japan-built Nissans, 1N4 and 1N6 mark US-built cars and trucks from Smyrna, Tennessee and Canton, Mississippi, and 5N1 marks a US-built SUV, also from Smyrna. Mexico-built Nissans (Aguascalientes) carry a 3N1 or 3N6 WMI.

CodeMeaning
JN1 / JN8Japan-built Nissan (car / SUV)
1N4 / 1N6US-built Nissan car/truck (Smyrna, TN & Canton, MS)
5N1US-built Nissan SUV (Smyrna, Tennessee)
3N1 / 3N6Mexico-built Nissan (Aguascalientes)

Engine and powertrain code (positions 4–8)

This is what confirms whether an Altima or Rogue listing's claimed CVT generation and engine actually match the VIN. The live decode above resolves this correctly against the actual model year.

Model year and plant (positions 10–11)

Nissan's major US plants are Smyrna, Tennessee and Canton, Mississippi, alongside Aguascalientes, Mexico. Position 11 resolves the exact plant for any VIN decoded above.