Most common 2021 Ford F-650 problems
Share of the 4 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Ford F-650 complaints by model year
Best F-650 years: 2011. Compare all years →
2021 Ford F-650 recalls (3)
Fuel system, diesel › Delivery › Fuel pump
Ford Motor Company (Ford) is recalling certain 2020-2022 F-Super Duty F250, F350, F450, F550, F600, and 2021-2022 F-650, F750 vehicles. Biodiesel deposits may form on the pump drivetrain roller components, which could lead to failure of the high pressure fuel pump.
Remedy: Dealers will update the powertrain control module (PCM) and Transmission Control Module (TCM) software, free of charge. Owner notification letters were mailed January 23, 2026.
Fuel system, diesel
Ford Motor Company (Ford) is recalling certain 2021 Super Duty F-250, F-350, F-450, F-550, F-600, and Medium Duty F-650 and F-750 vehicles equipped with 6.7L diesel engines. A small void may be present in the top-center of the vehicle's underhood secondary fuel filter cap, which may progress to a pinhole over time, allowing…
Remedy: Dealers will replace the primary and secondary fuel filters, free of charge. Owner notification letters were mailed January 28, 2022. Owners may contact Ford customer service at 1-866-436-7332.
Power train › Automatic transmission › Cooling unit and lines
Ford Motor Company (Ford) is recalling certain 2021 F-650 and F-750 vehicles equipped with 7.3L gas engines. The transmission oil cooler line may contact the air conditioning compressor pulley, possibly causing a transmission fluid leak.
Remedy: Ford will notify owners, and dealers will inspect transmission oil cooler lines for proper orientation and damage, correcting the lines and replacing any that are damaged, free of charge.
Frequently asked questions
Is the 2021 Ford F-650 a good car?
Based on 4 owner complaints filed with NHTSA, the 2021 F-650 rates few complaints: about as many complaints as a typical year of the F-650 at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2021 Ford F-650?
The brakes — 2 complaints, 50% of all complaints for this model year, most often about antilock › abs warning light. Next are the fuel & propulsion system (2) and transmission & drivetrain (1).
How many recalls does the 2021 Ford F-650 have?
There are 3 recalls for the 2021 Ford F-650, the most recent from December 20, 2024 (fuel pump). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Ford F-650?
The best years by complaints, compared at the same age, are 2011. See the full Ford F-650 years comparison.
At what mileage do 2021 Ford F-650 problems happen?
The median mileage reported in complaints is about 146,000 miles; 50% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.