Factory build sheet
1981 Mazda RX-7 13B
Build JM1FB332-E · 1.3L · Coupe
VIN positions 1 through 8 read JM1FB332 and position 10 reads E. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every RX-7 whose VIN starts JM1FB332 and carries E in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 21 of them.
- Decoded Jul 7, 2026
- 21 known VINs
- 1 listed for sale now
This configuration is identical to 1985 Mazda RX-7 13B 1.3L Coupe (31 vehicles). That page carries the full record.
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
- Displacement
- 1.3 L
- Displacement (CI)
- 80
- Engine model
- N3
- Horsepower
- 122 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 JM1FB332 for 2 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 E
- 1985 13B 1.3L Coupe · 31 vehicles code F
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 | FB332 | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | E | Model year — 1981 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
21 vehicles carry this build
Every VIN we have decoded to JM1FB332-E shares the specification above.
- 21 Known VINs
- 1 Listed for sale now
- JM1FB332 4E0829289
- JM1FB332 5E0816115
- JM1FB332 3E0819370
- JM1FB332 7E0803799
- JM1FB332 4E0828501
- JM1FB332 7E0828699
- JM1FB332 1E0839696
- JM1FB332 XE0830320
- JM1FB332 3E0837156
- JM1FB332 3E0829980
- JM1FB332 7E0835376
- JM1FB332 0E0831847
- JM1FB332 6E0802384
- JM1FB332 0E0812974
- JM1FB332 2E0831798
- JM1FB332 8E0837928
- JM1FB332 3E0816078
- JM1FB332 1E0829153
- JM1FB332 0E0815146
- JM1FB332 0E0822615
- JM1FB332 3E0833575
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 21 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.