Factory build sheet
1991 Ford Mustang LX
Build 1FACP44M-M · 2.3L 4cyl · Convertible
VIN positions 1 through 8 read 1FACP44M and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every Mustang whose VIN starts 1FACP44M and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 38 of them.
- Decoded Jul 7, 2026
- 38 known VINs
- 1 listed for sale now
Factory specification
As filed by Ford 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
- 2.3 L
- Displacement (CI)
- 140
- Cylinders
- 4
- Configuration
- In-Line
- Engine model
- 2.3 OHC EFI
- Engine manufacturer
- Ford
- Horsepower
- 105 hp
- Fuel type
- Gasoline
Body & chassis
- Body class
- Convertible/Cabriolet
- NHTSA body type
- PASSENGER CAR
- Doors
- 2
- Manufacturer
- FORD MOTOR COMPANY
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
Ford used the VIN pattern 1FACP44M for 3 model years. Nothing but the year changes between these pages, so the price gap between them is depreciation on an identical car.
-
1991 You are here code M
- 1992 LX 2.3L 4cyl Convertible · 95 vehicles code N
- 1993 LX 2.3L 4cyl Convertible · 165 vehicles code P
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 | 1FA | FORD MOTOR COMPANY · World manufacturer identifier |
| 4–8 | CP44M | Model, body style, engine and restraint system |
| 9 | × | Check digit — computed per vehicle, not part of the build |
| 10 | M | Model year — 1991 |
| 11 | × | Assembly plant |
| 12–17 | ×××××× | Production sequence number, unique to each vehicle |
38 vehicles carry this build
Every VIN we have decoded to 1FACP44M-M shares the specification above.
- 38 Known VINs
- 1 Listed for sale now
- 1FACP44M 6MF140043
- 1FACP44M 0MF140054
- 1FACP44M 5MF150093
- 1FACP44M 7MF165002
- 1FACP44M 3MF123023
- 1FACP44M 3MF151405
- 1FACP44M 4MF177222
- 1FACP44M XMF165169
- 1FACP44M 2MF149998
- 1FACP44M 9MF151361
- 1FACP44M 7MF157790
- 1FACP44M 7MF155022
- 1FACP44M 9MF148122
- 1FACP44M 4MF152336
- 1FACP44M 9MF170945
- 1FACP44M 3MF140341
- 1FACP44M 6MF165007
- 1FACP44M 3MF105329
- 1FACP44M 4MF150912
- 1FACP44M 0MF104221
- 1FACP44M 5MF152619
- 1FACP44M 6MF189825
- 1FACP44M 3MF148925
- 1FACP44M 5MF162440
- 1FACP44M 2MF150861
- 1FACP44M 3MF162498
- 1FACP44M XMF149425
- 1FACP44M 8MF191611
- 1FACP44M 2MF168194
- 1FACP44M XMF156570
- 1FACP44M 9MF165180
- 1FACP44M 9MF152154
- 1FACP44M 4MF141238
- 1FACP44M 9MF164417
- 1FACP44M 3MF162422
- 1FACP44M 4MF153969
- 1FACP44M 6MF193003
- 1FACP44M 2MF155056
Neighboring configurations
Other factory configurations of the Mustang, 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.
- 1991 GT 5L 8-cyl · Convertible cabriolet 112 vehicles · $19,995 median
- 2021 GT Convertible 5L 8-cyl · Convertible cabriolet · RWD 1,760 vehicles · $39,857 median
- 2021 I4 Convertible 2.3L 4-cyl · Convertible cabriolet · RWD 115 vehicles
- 2022 Mach 1 Coupe 5L 8-cyl 2,235 vehicles · $53,160 median
- 2022 I4 Coupe 2.3L 4-cyl 7,872 vehicles · $24,983 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 38 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.