Factory build sheet
1982 Mazda RX-7
Build JM1FB331-C · Coupe
VIN positions 1 through 8 read JM1FB331 and position 10 reads C. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every RX-7 whose VIN starts JM1FB331 and carries C in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 35 of them.
- Decoded Jul 7, 2026
- 35 known VINs
- 1 listed for sale now
Factory specification
As filed by Mazda 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
- Engine model
- N2
- Horsepower
- 91 hp
- Fuel type
- Gasoline
Body & chassis
- Body class
- Coupe
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Manufacturer
- MAZDA MOTOR CORPORATION
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.
The same build, other model years
Mazda used the VIN pattern JM1FB331 for 4 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 | JM1 | MAZDA MOTOR CORPORATION · World manufacturer identifier |
| 4–8 | FB331 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | C | Model year — 1982 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
35 vehicles carry this build
Every VIN we have decoded to JM1FB331-C shares the specification above.
- 35 Known VINs
- 1 Listed for sale now
- JM1FB331 1C0610441
- JM1FB331 6C0630281
- JM1FB331 5C0650764
- JM1FB331 3C0645188
- JM1FB331 3C0602793
- JM1FB331 1C0629586
- JM1FB331 XC0613547
- JM1FB331 3C0650570
- JM1FB331 9C0651254
- JM1FB331 3C0619867
- JM1FB331 2C0625871
- JM1FB331 8C0645204
- JM1FB331 3C0607962
- JM1FB331 3C0644574
- JM1FB331 9C0603396
- JM1FB331 5C0656466
- JM1FB331 XC0655510
- JM1FB331 0C0636500
- JM1FB331 0C0640644
- JM1FB331 4C0655745
- JM1FB331 XC0640148
- JM1FB331 4C0630473
- JM1FB331 5C0648156
- JM1FB331 1C0621570
- JM1FB331 6C0603503
- JM1FB331 4C0628030
- JM1FB331 4C0650724
- JM1FB331 9C0640027
- JM1FB331 3C0621537
- JM1FB331 3C0645224
- JM1FB331 8C0628760
- JM1FB331 1C0629846
- JM1FB331 0C0656875
- JM1FB331 8C0617404
- JM1FB331 7C0656579
Neighboring configurations
Other factory configurations of the RX-7, 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 35 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.