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What 2 owners told NHTSA about the 2021 Ford F-600 Sd

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (2)Fuel system (1)Fuel System, Diesel (1)

Newest first · 2 complaints

Feb 6, 2026Fuel System, Diesel

The contact owns a 2021 Ford F-600 SD. The contact received notification of NHTSA Campaign Number: 24V957000 (Fuel System, Diesel); however, the part to do the recall repair was not yet available. The local dealer was contacted, and the contact was advised that the repairs could cause more failures and that the recall repair could not be performed. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

NHTSA ODI 11716228

Jan 7, 2026Fuel system

I am filing a complaint against Ford Motor Company regarding a known defect in my 2021 Ford F-600 truck that resulted in a catastrophic fuel system failure. The truck has only 110,000 miles and has been maintained appropriately. It is registered in the State of Illinois and is used for my woman-owned small business. A few weeks ago, the vehicle began running roughly. When the dealer inspected it, they reported that the entire fuel system was contaminated with metal and required complete replacement at a cost of 14,500. I later discovered that Ford has a documented history of CP4 fuel pump failures on 2020–2022 Super Duty trucks, including the F-600, which cause metal contamination throughout the fuel system. Many owners have received goodwill or warranty assistance for this exact issue. I opened a case with Ford Customer Care (Case #[XXX]) and provided all documentation. Despite the clear evidence of a known defect and the severe financial hardship this caused, Ford refused to provide any assistance at all—not even covering the parts cost. I was forced to put the 14,500 repair on a credit card at 21% interest simply to keep my business functioning. This situation is financially devastating for a small, woman-owned Illinois business, and Ford’s refusal to offer goodwill assistance for a known defect is unfair and unreasonable. I am requesting help obtaining reimbursement or appropriate relief from Ford Motor Company. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11709382

Working with the data? Download all 2 complaints as CSV · fetched from NHTSA July 10, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2021 Ford F-600 Sd verdict →