Factory build sheet
2021 Ford F-150 XL Supercab RWD
Build 1FTEX1CB-M · 11.1L 6cyl
VIN positions 1 through 8 read 1FTEX1CB and position 10 reads M. Those nine characters define this build. Position 9 and positions 11 through 17 differ on every car.
Every F-150 whose VIN starts 1FTEX1CB and carries M in position 10 left the plant with the same engine, transmission, drivetrain and equipment listed below. We know of 1,518 of them.
- Decoded Jul 7, 2026
- 1,518 known VINs
- 46 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
- 11.1 L
- Displacement (CI)
- 677
- Cylinders
- 6
- Configuration
- In-Line
- Engine model
- DDC-60
- Engine manufacturer
- Det. Diesel
- Horsepower
- 285 hp
- Fuel type
- Diesel
Drivetrain
- Brake system
- Hydraulic
Body & chassis
- NHTSA body type
- TRUCK
- Manufacturer
- FORD MOTOR COMPANY
Weight rating
- GVWR class
- Class 2E
- GVWR
- 6,001–7,000 lb
Gross vehicle weight rating is the loaded ceiling set by the manufacturer, not the car's own weight.
What this build asks today
Asking prices of live dealer listings decoded to this exact configuration — narrower than the trim-level figure, because every car counted here shares the same engine, transmission and drivetrain.
$21,571 median asking price · 68 listings · as of Aug 30, 2026
Low 2% of listings $14,444 Top 2% of listings $28,995
The same build, other model years
Ford used the VIN pattern 1FTEX1CB for 5 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 | 1FT | FORD MOTOR COMPANY · World manufacturer identifier |
| 4–8 | EX1CB | 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 |
1,518 vehicles carry this build
Every VIN we have decoded to 1FTEX1CB-M shares the specification above.
- 1,518 Known VINs
- 46 Listed for sale now
- 68 Priced listings
- $21,571 Median asking
Vehicles of this build
A fixed sample of 1 vehicles carrying this configuration — each with its own history page. The sample refreshes quarterly, not nightly, so it stays put between visits.
Cars are filed by a fixed rule based on the VIN, so a car never moves between groups.
Neighboring configurations
Other factory configurations of the F-150, 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.
- 2021 XL Supercab RWD 6.6L 6-cyl 2,048 vehicles · $23,720 median
- 2021 XL Supercab 4WD 11.1L 6-cyl 1,531 vehicles · $23,991 median
- 2021 XL Supercab 4WD 2.7L 6-cyl · 4WD 7,238 vehicles · $27,900 median
- 2021 Lariat 7L 8-cyl 402 vehicles · $34,119 median
- 2021 5L 8-cyl · 4WD 47,925 vehicles · $34,154 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.
Prices are asking prices from 68 live dealer listings decoded to this build , last updated August 30, 2026 . They are what sellers ask, not what buyers paid.
Vehicle counts come from the 1,518 VINs of this build we have seen in dealer inventory. They are a sample of the road population, not a production figure.