World Manufacturer Identifier (positions 1–3)

The third character on a Jeep VIN marks the vehicle type. 1C4 and 1J4 mark a US-built Jeep SUV — the Wrangler is built in Toledo, Ohio, and the Grand Cherokee in Detroit, Michigan. 1C6/1J6 marks the Gladiator truck. Mexico-built Jeeps (Compass, some Renegades) carry a 3C4 WMI, and Italy-built Renegades carry ZAC.

CodeMeaning
1C4 / 1J4US-built Jeep SUV (Toledo, Ohio & Detroit, Michigan)
1C6 / 1J6US-built Jeep truck (Gladiator)
3C4Mexico-built Jeep (Toluca)
ZACItaly-built Jeep (Renegade, Melfi)

Drivetrain and engine code (positions 4–8)

This block is what separates a 2-door Wrangler from a 4-door Unlimited, and a base Pentastar V6 from a turbocharged or Hemi V8 variant. The live decode above resolves this correctly against the actual model year.

Model year and plant (positions 10–11)

Jeep's home plants are Toledo, Ohio (Wrangler, Gladiator) and Detroit, Michigan (Grand Cherokee), with Compass and some Renegades built in Toluca, Mexico. Position 11 resolves the exact plant for any VIN decoded above.