Every Toyota Sienna (2021–2024) carries a 17-character VIN that begins with the 5TD WMI. The Sienna is a hybrid van; this page shows what each character of a Toyota Sienna VIN means and gives 4 checksum-valid sample VINs you can drop straight into test fixtures. Synthetic — not real: no scraping, no real-owner data. The generator below is pre-filtered to the Sienna.
Each sample below is built from the real 5TD WMI and the Sienna's descriptor, so it decodes to a Toyota Sienna of the right model year:
Have a real Toyota Sienna VIN? Decode it →
Worked on the sample 5TDZRKEC1MS919522 — a 2021 Toyota Sienna:
| Position | Section | Value | What it tells you |
|---|---|---|---|
| 1–3 | WMI | 5TD | Marks the VIN as Toyota, built in United States |
| 4–8 | VDS | ZRKEC | Descriptor for the Sienna — van body, hybrid powertrain |
| 9 | Check digit | 1 | Mod-11 checksum over the other 16 characters |
| 10 | Model year | M | Code M = 2021 |
| 11 | Plant | S | Assembly-plant code |
| 12–17 | Serial | 919522 | Sequential production number |
Positions 1–3 of every Toyota Sienna VIN read 5TD — the World Manufacturer Identifier that marks the vehicle as Toyota, assembled in United States (North America). After the WMI, positions 4–8 (ZRKEC in our seed) describe the Sienna itself; see the full 17-digit format.
Position 10 encodes the model year. For the Sienna, 2021 is code M and 2024 is code R. See the 2024 year code or the check-digit math.
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A Toyota Sienna VIN is 17 characters starting with the 5TD WMI, for example 5TDZRKEC1MS919522. Positions 4–8 describe the Sienna, position 9 is the check digit, position 10 is the model year, and 12–17 are the serial number.
Read it left to right: 5TD is the Toyota WMI, positions 4–8 are the Sienna descriptor, position 9 verifies the VIN via a mod-11 checksum, position 10 gives the year, position 11 the plant, and 12–17 the serial. Paste any VIN into the decoder to do it automatically.
The Sienna in our seed uses the 5TD WMI (United States). Any VIN beginning with 5TD decodes to Toyota.
No. They are synthetically generated but checksum-valid, use the real Toyota 5TD WMI, and carry the Sienna's descriptor and a valid year code — so a decoder returns a Toyota Sienna. No real vehicle's VIN is used.