Reliability AnalysisBased on known issue patterns, repair cost data, and ownership trends · How we score

2021 Ford F-350 Reliability ReportB- grade · moderate risk · system-by-system breakdown

78/ 100

KeepScore

MODERATE RISK

Grade: B-

A formidable workhorse demanding vigilant maintenance to avoid potentially crippling repair bills.

Full system breakdown + what I would do

Quick Facts · 2021 Ford F-350

  • The system most likely to surface first: 6.7l power stroke diesel engine (major severity).
  • No active NHTSA safety recalls on record — a clean recall slate for the 2021 model year.
  • Scores 10 points below the strongest nearby year — the 2020 Ford F-350 earns a 88.

Is the 2021 Ford F-350 Worth Buying?

The 2021 Ford F-350 is a titan of capability, ready for serious work, but buyers must understand its inherent complexities and the potential for high-cost repairs, especially with the Power Stroke diesel. While incredibly powerful and durable in its core structure, diligent maintenance is absolutely critical to prevent expensive engine and emissions system failures that can quickly overshadow its utility.

Biggest Strengths

  • Robust chassis and drivetrain designed for heavy-duty work
  • Exceptional towing and hauling capabilities
  • Powerful engine options (especially the 6.7L Power Stroke and 7.3L Godzilla)

What Tends to Fail First on the 2021 Ford F-350

The systems that break first on the 2021 Ford F-350. Mileage windows, repair costs, and fix-before-you-buy notes are in the full report.

1
6.7L Power Stroke Diesel Enginemajor
2
10-Speed TorqShift Automatic Transmission (10R140)moderate
3
Electrical & Sensorsmoderate
Typical mileage, cost ranges, and the exact what-to-check list are in the full report.

2021 Ford F-350 Recall History

No active NHTSA safety recalls on file for the 2021 Ford F-350. Always verify with your VIN atnhtsa.gov.

What breaks on the 2021 Ford F-350?

Full reliability breakdown — engine, transmission, rust, electrical. With repair costs and mileage danger zones.

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Other Ford F-350 Years to Consider

Compare KeepScores across nearby years of the Ford F-350. Click any year for its full report.

2021 Ford F-350 Alternatives

Similar class, similar year range — ranked by KeepScore.

Relevant Products for Your 2021 Ford F-350

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Frequently Asked Questions

Final Step

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