Factory build sheet
2019 Buick Regal Preferred II
Build W04GM6SX-K · 2L 4cyl · Front-wheel drive · Sedan
VIN positions 1 through 8 read W04GM6SX and position 10 reads K. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Regal whose VIN starts W04GM6SX and carries K in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 278 of them.
- Decoded Jul 7, 2026
- 278 known VINs
- 2 listed for sale now
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
- Displacement
- 2 L
- Cylinders
- 4
- Configuration
- In-Line
- Engine model
- LTG - Spark ignited Direct Injection, Variable Val
- Valve train
- Dual Overhead Cam (DOHC)
- Turbocharged
- Yes
- Fuel type
- Gasoline
Drivetrain
- Drive type
- Front-wheel drive
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 4
- Seats
- 5
- Seat rows
- 2
- Manufacturer
- ADAM OPEL AG
Weight rating
- GVWR class
- Class 1
- GVWR
- 6,000 lb or less
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Driver assistance, as built
- Blind spot warning Optional
Systems the filing does not record are not listed above. Check the window sticker of the exact car before you rely on any single feature.
The same build, other model years
Buick used the VIN pattern W04GM6SX for 2 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
- 2018 Preferred II 2L 4cyl Sedan · 536 vehicles code J $15,145
-
2019 You are here code K
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 | W04 | ADAM OPEL AG · World manufacturer identifier |
| 4–8 | GM6SX | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | K | Model year — 2019 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
278 vehicles carry this build
Every VIN we have decoded to W04GM6SX-K shares the specification above.
- 278 Known VINs
- 2 Listed for sale now
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
Neighboring configurations
Other factory configurations of the Regal, each with its own build sheet. The set is fixed by the VIN patterns themselves, so it does not shuffle as prices or inventory move.
- 2019 Preferred II 2L 4-cyl · Sedan saloon · AWD 59 vehicles
- 2019 Essence 2L 4-cyl · Sedan saloon · FWD 291 vehicles · $17,753 median
- 2019 Essence 2L 4-cyl · Sedan saloon · AWD 213 vehicles · $17,580 median
- 2019 Avenir 2L 4-cyl · Sedan saloon · FWD 97 vehicles
- 2020 GS 3.6L 6-cyl · Sedan saloon · AWD 94 vehicles · $21,087 median
Keep going
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 278 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.