Death Wobble (Steering/Suspension)

A violent shaking or oscillation of the front end, typically occurring at highway speeds after hitting a bump. This is a critical safety issue that can lead to loss of control. Estimated repair cost: $600 - $1,200.

Diesel Fuel System Failures

Issues with the diesel fuel system, including potential CP4 pump failure, fuel leaks, or injector problems. These can lead to engine shutdown or fire hazards. Estimated repair cost: $1,000 - $3,500.

Problems related to the transmission and drivetrain, such as hard shifting, slippage, or sudden disengagement. These can impact drivability and safety. Estimated repair cost: $2,000 - $5,000+.

Steering System Issues (Beyond Death Wobble)

Concerns related to steering system components, such as looseness or premature wear in steering linkage. Estimated repair cost: $400 - $800.

Suspension System Issues (Beyond Death Wobble)

Concerns related to suspension components, such as premature wear or noise from shocks, struts, or bushings. Estimated repair cost: $500 - $1,000.

CARFOCALvehicle research

2021 Ford F-250 Maintenance guide

Name: Maintenance dataset for 2021 Ford F-250
Creator: Carfocal

v1.0Updated May 30, 2026Ryan Davis4 Sources Analyzed

MAINTENANCE SUMMARY

The 2021 Ford F-250 presents a maintenance profile marked by a significant number of owner complaints, particularly concerning the diesel fuel system and powertrain. The notorious 'Death Wobble' phenomenon, affecting the steering and suspension, is a critical safety concern requiring diligent inspection.

View Critical Issue: Powertrain Issues

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Reliability Score

Est. Annual Maintenance Cost

Not available

TSBs & Recalls

1 TSBs | 0 Recalls

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Key Takeaways

The diesel fuel system is a primary concern, with 20 complaints logged.
Powertrain issues are also prevalent, accounting for 18 complaints.

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Critical service intervals

Common failure analysis

Symptoms and prevention guidance