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2021 Ford F-150 Supercab Diesel
Solid pick. The public record on this car is clean for its age. Inspect it, then negotiate with confidence.
937 owner complaints · 0 recalls · data verified July 19, 2026 · source: NHTSA
Why buy?
Transmission & drivetrain problems dominate (30% of complaints, typically reported near 44k miles).
Zero recalls, rare for a car this age.
Score breakdown, by factor
Full methodology →#270 of 426Among the 2021 models with a matured record, the 2021 Ford F-150 Supercab Diesel ranks #270, scoring higher than 34% of them. See the 2021 ranking →
Complaints filed per year
Fading = early teething worked out. Climbing = problems aging in.
How it crashes
NHTSA’s own crash tests, separate from the reliability score above.
NHTSA crash-tested this model year but didn’t publish an overall star rating for it.
1 open NHTSA defect investigation on file for this model year, separate from the recalls above.
Source: nhtsa.gov/ratings. Star ratings compare vehicles within the same class and size, not across every car on the road.
The road ahead
What breaks on a 2021 Ford F-150 Supercab Diesel, plotted where owners report it happening.
Also reported (mileage varies): Fuel system (71)
Mileage medians come from owners who mentioned an odometer reading in their NHTSA complaint, a rough guide, not a schedule.
Transmission & drivetrain
30%284 complaints · typically near 44k mi · 180 in the last 2 years
“Transmission has harsh shifts all the time this is dangerous and well known by ford”
Visibility & wipers
14%130 complaints · typically near 12k mi · 30 in the last 2 years
“The rear window basically has 3 parts. Driver side, center sliding section, and passenger side. Only the driver side section defrost. According to online forums specif…”
Electrical system
13%123 complaints · typically near 19k mi · 64 in the last 2 years
“The contact owns a 2021 Ford F-150. The contact received notifications of NHTSA Campaign Numbers: 25V455000 (Fuel System, Gasoline) and 26V104000 (Electrical System, E…”
Lights
10%98 complaints · typically near 55k mi · 84 in the last 2 years
“The passenger side running light in the headlight has gone out. Not the entire part just the vertical section of the running light”
Check it against this car’s mileage
Type the odometer reading on the actual car you’re looking at to see which of these problem areas owners tend to report before it, around it, or after it.
We can place 5 of this model's commonly reported problem areas against a mileage. Nothing is stored.
Read all 937 owner complaints in their own words → · just the 19 crash/fire/injury reports →
Recalls (0)
No recall campaigns on file for this model year.
Questions to ask the seller
Questions worth asking the seller of this Ford before you buy, drawn from its public record:
- Owners of this model report transmission & drivetrain problems more than anything else (owners tend to report it near 44k miles). Has this car shown any transmission & drivetrain symptoms, and are there repair records for it?
- Owners of this model report visibility & wipers problems more than anything else (owners tend to report it near 12k miles). Has this car shown any visibility & wipers symptoms, and are there repair records for it?
- Has this car been in any accident or had any structural, airbag, or flood-related repair? Do you have a clean title and a recent history report (Carfax / AutoCheck)?
- How many owners has it had, do you have the maintenance records, and why are you selling it?
- Are you open to me having an independent mechanic inspect it before we settle on a price?
Before you hand over money
Check the VIN for open recalls
NHTSA’s free lookup shows whether this exact car had its recall remedies completed.
Free NHTSA VIN check ↗Get a pre-purchase inspection
A $150 to $250 independent inspection of this exact 2021 Ford F-150 SUPERCAB DIESEL beats every score on the internet, including ours.
What to ask forNot set on the 2021? See how every F-150 Supercab Diesel model year scores →
Cross-shopping? Compare the 2021 Ford F-150 Supercab Diesel against another car →
What owners say
Real owners of this exact model-year, shown separately from the NHTSA score. If they disagree, that’s worth knowing.