2021 model year · 5,820+ owner reports · Updated April 2026
According to Au7o's analysis of 5,820+ owner reports, the 2021 Ford F-150 has 4 documented known issues. No issues are rated critical, indicating generally reliable ownership. The most commonly reported issue is 10-Speed Transmission Shudder/Harsh Shifts with 2,800 owner reports. Across all issues, repair costs range from $0 to $3,500. DIY maintenance guides at au7o.io.
On the 2017-2023 Ford F-150, the 10R80 10-speed automatic transmission can develop a shudder during light acceleration, typically between 25-50 mph. This is caused by torque converter clutch issues and affects many F-150s. Ford has released multiple TSBs and fluid updates to address this.
Perform transmission fluid flush with Motorcraft Mercon ULV and add Ford friction modifier. Adaptive learning reset via FORSCAN or dealer may help. Multiple fluid changes sometimes needed. In severe cases, torque converter replacement required under warranty extension.
Parts and tips from 2,800+ owners who fixed this issue
On the 2017-2021 Ford F-150 3.5L EcoBoost, the water pump on the 3.5L EcoBoost can fail or develop leaks, causing coolant loss and potential overheating. The pump is internal and driven by the timing chain, making replacement labor-intensive.
Replace water pump when symptoms appear. Consider timing chain inspection/replacement at same time if high mileage. Replace thermostat while accessible. Ensure proper cooling system bleeding after repair.
Parts and tips from 720+ owners who fixed this issue
On the 2018-2021 Ford F-150 5.0L V8, the 5.0L Coyote V8 can develop a ticking or rattling noise at startup, often from the cam phasers. This is similar to issues in the Mustang GT. The noise typically diminishes after the engine warms up but can indicate phaser wear.
Use quality synthetic oil and change regularly. Ford updated cam phaser design for later production. If noise is excessive, cam phaser replacement may be needed. Check for TSBs specific to your build date.
Parts and tips from 1,200+ owners who fixed this issue
On the 2015-2023 Ford F-150, the HVAC blend door actuators can fail, causing clicking noises from the dashboard and inability to control air temperature. Air may blow only hot or only cold regardless of settings. Multiple actuators are used and any can fail.
Replace failed blend door actuator. Actuators are located behind dashboard and require some disassembly. Consider replacing multiple actuators if one fails as others may follow. OEM parts recommended.
Parts and tips from 1,100+ owners who fixed this issue
POWER TRAIN:AUTOMATIC TRANSMISSION
Ford Motor Company (Ford) is recalling certain 2022-2023 F-150, Mustang, Explorer, Bronco, and 2023 Lincoln Aviator vehicles equipped with automatic transmissions. The transmission may contain a loose bolt which could prevent the transmission from engaging the park gear, although the gear shifter position may indicate that the vehicle has been shifted to "PARK."
AIR BAGS:FRONTAL
Ford Motor Company (Ford) is recalling certain 2023 F-150 vehicles. The instrument panel top cover on the passenger-side may prevent the air bag from deploying as intended. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "Occupant Crash Protection."
POWER TRAIN:AXLE ASSEMBLY
Ford Motor Company (Ford) is recalling certain 2023 F-150, Expedition, and Lincoln Navigator vehicles. The front axle pinion may not have been heat-treated, which can cause it to fracture.
PARKING BRAKE:ELECTRICAL
Ford Motor Company (Ford) is recalling certain 2021-2023 F-150 vehicles equipped with a single exhaust system. Contact with the rear axle housing may damage the wiring harness, causing the electric parking brake to activate unexpectedly.
STEERING:COLUMN
Ford Motor Company (Ford) is recalling certain 2023 F-150 and Ford SD F250, F350, F450, F550, and F600 vehicles. The steering wheel clock spring may have an insufficient weld, causing a loss of electrical connection to the driver's frontal air bag.
+ 46 more recalls. Check all on NHTSA.gov
Enter your VIN at NHTSA.gov to check recalls specific to your vehicle.
Don't see your problem? Describe your symptoms to get a diagnosis, or get a full repair guide.
According to Au7o's analysis of 5,820+ owner reports, the 2021-2021 Ford F-150 has 4 documented issues. The most frequently reported are: 10-Speed Transmission Shudder/Harsh Shifts, Water Pump Leak/Failure (3.5L EcoBoost), 5.0L Coyote Cam Phaser Tick/Rattle. None are rated critical, but regular maintenance is recommended.
The 2021-2021 Ford F-150 has 4 known issues documented across 5,820+ owner reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Ford F-150 issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 10R80 10-speed automatic transmission can develop a shudder during light acceleration, typically between 25-50 mph. This is caused by torque converter clutch issues and affects many F-150s. Ford has released multiple TSBs and fluid updates to address this. Repairs typically run $200-$3,500. Severity: medium.
The water pump on the 3.5L EcoBoost can fail or develop leaks, causing coolant loss and potential overheating. The pump is internal and driven by the timing chain, making replacement labor-intensive. Repairs typically run $800-$2,000. Severity: medium.
The 5.0L Coyote V8 can develop a ticking or rattling noise at startup, often from the cam phasers. This is similar to issues in the Mustang GT. The noise typically diminishes after the engine warms up but can indicate phaser wear. Repairs typically run $0-$2,500. Severity: low.
The HVAC blend door actuators can fail, causing clicking noises from the dashboard and inability to control air temperature. Air may blow only hot or only cold regardless of settings. Multiple actuators are used and any can fail. Repairs typically run $100-$500. Severity: low.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
