Factory build sheet
2021 Fiat 500X Trekking
Build ZFBNF3B1-M · 1.3L 4cyl · All-wheel drive · Sport Utility Vehicle (SUV)
VIN positions 1 through 8 read ZFBNF3B1 and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every 500X whose VIN starts ZFBNF3B1 and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 278 of them.
- Decoded Jul 7, 2026
- 278 known VINs
- 3 listed for sale now
Factory specification
As filed by Fiat 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
- Cylinders
- 4
- Configuration
- In-Line
- Engine model
- 177 hp 13l i4
- Engine manufacturer
- FCA
- Turbocharged
- Yes
- Horsepower
- 177 hp
- Fuel type
- Gasoline
Drivetrain
- Drive type
- All-wheel drive
- Transmission
- Automatic
- Forward speeds
- 9
- Brake system
- Hydraulic
Body & chassis
- Body class
- Sport Utility Vehicle (SUV)/Multi-Purpose Vehicle (MPV)
- NHTSA body type
- MULTIPURPOSE PASSENGER VEHICLE (MPV)
- Doors
- 4
- Seats
- 5
- Seat rows
- 2
- Manufacturer
- FCA ITALY S.P.A.
Weight rating
- GVWR class
- Class 1C
- GVWR
- 4,001–5,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
The same build, other model years
Fiat used the VIN pattern ZFBNF3B1 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 | ZFB | FCA ITALY S.P.A. · World manufacturer identifier |
| 4–8 | NF3B1 | 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 |
278 vehicles carry this build
Every VIN we have decoded to ZFBNF3B1-M shares the specification above.
- 278 Known VINs
- 3 Listed for sale now
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
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 278 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.