Factory build sheet
2021 BMW B7 xDrive
Build WBA7U2C1-M · 4.4L 8cyl · All-wheel drive · Sedan
VIN positions 1 through 8 read WBA7U2C1 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every B7 whose VIN starts WBA7U2C1 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 158 of them.
- Decoded Jul 7, 2026
- 158 known VINs
- 1 listed for sale now
Factory specification
As filed by BMW 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
- 4.4 L
- Cylinders
- 8
- Engine model
- 8-cylinder turbo
- Horsepower
- 523 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
- Transmission
- Automatic
- Forward speeds
- 8
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 4
- Seats
- 7
- Seat rows
- 3
- Series
- 7-Series
- Manufacturer
- BMW AG
Weight rating
- GVWR class
- Class 1D
- GVWR
- 5,001–6,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
Driver assistance, as built
- Forward collision warning Standard
- Lane departure warning Standard
- Lane keeping assistance Standard
- Adaptive cruise control Standard
- Blind spot warning Standard
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
BMW used the VIN pattern WBA7U2C1 for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
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 | WBA | BMW AG · World manufacturer identifier |
| 4–8 | 7U2C1 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 2021 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
158 vehicles carry this build
Every VIN we have decoded to WBA7U2C1-M shares the specification above.
- 158 Known VINs
- 1 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 B7, 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.
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 158 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.