Factory build sheet
1981 BMW 320i I
Build WBAAG330-B · 1.8L 4cyl · Sedan
VIN positions 1 through 8 read WBAAG330 and position 10 reads B. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 320i whose VIN starts WBAAG330 and carries B in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 24 of them.
- Decoded Jul 7, 2026
- 24 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
- 1.8 L
- Displacement (CI)
- 108
- Cylinders
- 4
- Engine manufacturer
- BMW-AG
- Fuel type
- Gasoline
Body & chassis
- Body class
- Sedan/Saloon
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Manufacturer
- BMW AG
The same build, other model years
BMW used the VIN pattern WBAAG330 for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
-
1981 You are here code B
- 1982 I 1.8L 4cyl Sedan · 26 vehicles code C
- 1983 I 1.8L 4cyl Sedan · 39 vehicles code D
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 | AG330 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | B | Model year — 1981 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
24 vehicles carry this build
Every VIN we have decoded to WBAAG330-B shares the specification above.
- 24 Known VINs
- 1 Listed for sale now
- WBAAG330 2B8006638
- WBAAG330 3B8017857
- WBAAG330 1B8021020
- WBAAG330 2B8002704
- WBAAG330 7B8008918
- WBAAG330 5B8002602
- WBAAG330 2B8013301
- WBAAG330 XB8016544
- WBAAG330 XB8018908
- WBAAG330 3B8013985
- WBAAG330 2B8023701
- WBAAG330 7B8000222
- WBAAG330 9B8016597
- WBAAG330 7B8004268
- WBAAG330 0B8016214
- WBAAG330 0B8004452
- WBAAG330 3B8016112
- WBAAG330 7B8020857
- WBAAG330 4B8000016
- WBAAG330 XB8003664
- WBAAG330 1B8013709
- WBAAG330 8B8010712
- WBAAG330 2B8014352
- WBAAG330 4B8023747
Neighboring configurations
Other factory configurations of the 320i, 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.
- 1982 I 1.8L 4-cyl · Sedan saloon 26 vehicles
- 2013 SA 2L 4-cyl · Sedan saloon 1,269 vehicles · $8,175 median
- 2013 xDrive 2L 4-cyl · Sedan saloon · AWD 1,212 vehicles · $8,400 median
- 2014 SA 2L 4-cyl · Sedan saloon 2,811 vehicles · $8,995 median
- 2014 xDrive SA 2L 4-cyl · Sedan saloon · AWD 2,127 vehicles · $9,798 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 24 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.