Factory build sheet
2011 Buick Regal CXL Sedan 4D
Build WW04GP5E-1
VIN positions 1 through 8 read WW04GP5E and position 10 reads 1. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Regal whose VIN starts WW04GP5E and carries 1 in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 1 of them.
- Decoded Jul 7, 2026
- 1 known VINs
Factory specification
As filed by Buick with NHTSA for this build. Fields the filing does not record are left out entirely — a missing row means no recorded value, not a missing feature.
Engine
- Fuel type
- Gasoline
How this VIN pattern is read
A 17-character VIN carries two kinds of information: what was built, and which one it is. This page is the first kind — the nine highlighted positions.
| Positions | Characters | What they encode |
|---|---|---|
| 1–3 | WW0 | World manufacturer identifier |
| 4–8 | 4GP5E | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | 1 | Model year — 2011 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
1 vehicles carry this build
Every VIN we have decoded to WW04GP5E-1 shares the specification above.
- 1 Known VINs
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Where this data comes from
Specification fields are decoded from the manufacturer's filings in the NHTSA vPIC database, keyed on VIN positions 1–8 and 10. We publish the filed values as they stand and leave out anything the filing does not record.
Vehicle counts come from the 1 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.