The first three characters of a VIN are the World Manufacturer Identifier (WMI). JTH is assigned to Lexus, built in Japan (Asia). Any VIN that starts with JTH decodes to Lexus. The sample VINs below are checksum-valid and start with JTH.
| Field | Value |
|---|---|
| WMI | JTH (VIN positions 1–3) |
| Manufacturer | Lexus |
| Country of assembly | Japan |
| Region | Asia (from the first character, J) |
| Models seen here | IS |
Lexus test VINs · Decode a JTH VIN →
After the JTH WMI, positions 4–8 describe the model, body and engine; position 9 is the mod-11 check digit; position 10 is the model year; position 11 is the assembly plant; and positions 12–17 are the serial number. See the full 17-digit VIN format.
JTH is a Lexus WMI. Every VIN beginning with JTH was built by Lexus and decodes to that make.
The first character J places the manufacturer in Japan (Asia region) under the VIN standard.
No. They are synthetically generated but checksum-valid and use the real JTH WMI, so a decoder returns Lexus. No real vehicle's VIN is used.