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10.0

really awful
Crashes / Fires:
0 / 1
Injuries / Deaths:
1 / 0
Average Mileage:
9,234 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2021 Ford F-150 engine problems

engine problem

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2021 Ford F-150 Owner Comments (Page 1 of 3)

problem #48

Jan 182025

F-150

  • 115,000 miles

A D V E R T I S E M E N T S

When turning right there was a complete loss of power with no response from the throttle it was just stuck coasting at 20klm hr. For 20 seconds or so then throttle kicked in and normal operation again. This has happened twice now in the past week. Very dangerous especially when turning into traffic.

- Carleton Place, CA, USA

problem #47

Jun 302024

F-150

  • miles
Despite having been told my truck was fixed at a dealer shop, my truck still displays an absence of forward propulsion when applying the gas pedal and trying to accelerate from slower speeds. This has happened when trying to make a left or right turn when there is oncoming traffic. Sometimes this happens while trying to accelerate on the on-ramp of a highway to get up to normal piste speed limits with traffic very fast behind me. The dealer I took it to said they fixed the issues. Luckily I can apply the Manual mode with a button, but this is distracting when trying to look for the button, and the issue comes back in Automatic mode.

- Oklahoma City, OK, USA

problem #46

Nov 082024

F-150

  • miles
I was stopped at red light intersection my truck went into idle mode (start/stop) when light changed I tried to proceed through the truck engine/electrical transmission locked up. I had to turn the truck completely off and open one of the doors to be able to restart the truck and move through the intersection. it has done this repeatedly I have taken it to Ford they have tried to charge me an astronomical amount to diagnose it.. with no guarantee of it being fixed. I have almost been rear ended 3 times!

- Interlachen , FL, USA

problem #45

Aug 232024

F-150

  • miles

A D V E R T I S E M E N T S

Recall with no remedy.

- Argyle, WI, USA

problem #44

Nov 092024

F-150

  • miles
The intake valves failed in my 2021 ford f150 and has caused major engine damage the truck is un drivable now and ford REFUSES to help me in any way they said the recall is expected to have a remedy in 2025 so until then I-??m just stuck they will not give me a loaner vechile or anything

- Alderson, WV, USA

problem #43

Nov 072024

F-150

  • miles
After a right turn in a residential street, I pressed the accelerator to progress on the roadway. The truck did not accelerate, so I looked at the tachometer and observed it above 0 and below 1,000 rpm. The engine was running, but unresponsive despite pumping the accelerator. While rolling at 5 mph I shifted the transmission to neutral and continued pumping the accelerator. There was no response for the next 200'. Finally, the engine became responsive and ran normally. It runs normally now. I cannot reproduce this issue. I called the Ford dealer service on 8 November 24 at Noon and they said "watch for the issue". I expressed that in traffic, a suddenly undependable engine is a serious concern. The accelerator/engine was unresponsive for a continued period of time. The gas engine was in control. There was no check light/warning light. The Ford dealer inspected the telemetry of the vehicle remotely and no anamolies were observed. The dealer declined to inspect the vehicle since the issue is not reproducible.

- Sagle, ID, USA

problem #42

Oct 172024

F-150

  • miles

A D V E R T I S E M E N T S

Right turn from stop then try to cleated there is no response from the pedal Will lunge forward and engage throttle if I-??m lucky

- South Bend, IN, USA

problem #41

Oct 042024

F-150

  • miles
1) Vehicle acceleration delays. From a stopped vehicle condition transitioning onto highway roadway the vehicle failed to accelerate for several seconds. Again from stopped or low speed idling condition following a turn there occurs a 1 to 10 second failure to accelerate. 2) Failure to accelerate puts into question the safety of anyone in any vehicle within proximity to the malfunctioning vehicle. 3) Our personal vehicle problems has not been observed by any dealer, we have not presented it for diagnosis at this time. We are actively monitoring and posting to the [XXX] group about our experience. A ford dealership employee has an advanced Ford factory representative working on understanding the problem. Otherwise, it seems, no one currently understands the issue as yet. 4) Our personal vehicle has NOT been inspected by the Manufacturer, police, insurance reps or others at this point in time. 5) There has never been a warning lamp or message in regard to this acceleration failure. The failure is not predictable in nature. We have never experience such failure at highway traffic speeds. It most often presents when accelerating from an idle or low speed driving condition, often following a turn. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Vermillion, SD, USA

problem #40

Sep 022023

F-150

  • miles
At 30k I noticed the transmission start shifting hard especially when down shifting. I called the dealer and expressed by concerns when doing my normal oil changes. The dealer said it was normal. Now at 42k the truck skips 2nd gear and when shifting between 3rd and 4th it hits hard. Also an independent mechanic shop said the engine is making a weird winding sound. Sounds like the barring in the turbos are going. Again I tell the dealer and they said it's normal for the 3.5 ecoboost to sound like that. Currently it's at the dealer getting the transmission worked on. I know I will be having engine issues, that sound is not normal. I want it on record that it started happening around 30k.

- Philadelphia, PA, USA

problem #39

Sep 062024

F-150

  • miles
I-??ve had multiple -??service engine soon-?? errors appear while driving normal highway conditions. The same code appears on my mobile application as the following-?? Powertrain Malfunction / Reduced Power What Is Happening" Illuminates when the system has detected a powertrain or a four-wheel drive fault. What Should I Do" A Powertrain or All Wheel Drive (AWD)/Four Wheel Drive (4WD) fault has been detected, contact your authorized dealer as soon as possible. These codes have been noted on the following dates. 8-25-2024 and 9-6-2024

- New Braunfels, TX, USA

problem #38

Sep 022024

F-150

  • miles

A D V E R T I S E M E N T S

Ford Motor Company (Ford) is recalling certain 2021-2022 Bronco, F-150, Edge, Explorer, Lincoln Nautilus, and Lincoln Aviator vehicles equipped with either a 2.7L or 3.0L Nano EcoBoost engine. The engine intake valves may break while driving, which can result in engine failure and a loss of drive power. My veh is experiencing this issue FOrd need to release the recall for repairs to be complete.

- Allen Park, MI, USA

problem #37

Sep 052024

F-150

  • miles
I've experienced the loss of power during hard acceleration. Right hand turns from a stop feel like the engine has stalled and rolling right hand turns are becoming increasingly more dangerous. Most recently as I was merging onto a highway. Pedal to the floor, the truck initi9ally accelerated for a couple seconds until it stalled to make the truck not only not accelerate but almost made it feel as if I was breaking. This is very dangerous.

- Houston, TX, USA

problem #36

Sep 042024

F-150

  • miles
Cruising highway speeds, when accelerator is pressed to gain speed, make a pass, ect the transmission downshifts into 3rd gear, engine losses all power for 4-8 seconds while accelerator is held down. I-??ve almost been in several accidents due to expecting a vehicle to accelerate and nothing happening and traffic

- Summerfield, FL, USA

problem #35

Aug 242024

F-150

  • miles
My 2.7 Ecoboost motor failed while driving in traffic, Ford replaced the entire engine due to catastrophic failure of the valves, looks relative to recall Manufacturer Name : Ford Motor Company Submission Date : AUG 23, 2024 NHTSA Recall No. : 24V-635 Manufacturer Recall No. : 24S55 I am working with Ford now on a way forward, there were no symptoms prior to failure and the vehicle stopped immediately and was almost struck numerous times in traffic. I can attach Ford documents at a later time.

- Ofallon, IL, USA

problem #34

Apr 012024

F-150

  • 4,000 miles
The contact owns a 2021 Ford F-150. The contact stated that the vehicle was shuddering and jerking while driving. The check engine warning light was flashing. The contact stated there was another unknown warning light flashing. The contact stated that the soy-based wiring was causing costly repairs. The vehicle was taken to the local dealer, where it was diagnosed that the wiring in the undercarriage was chewed on. The vehicle was repaired, but the failure recurred a month later. The contact stated that while driving 35-?"40 MPH, an unknown warning light started to flash. The vehicle was taken back to the local dealer, where it was diagnosed and determined that the soy-based wiring had been chewed on by squirrels and chipmunks. The vehicle was repaired. The manufacturer was contacted and referred to the NHTSA Hotline. The failure mileage was approximately 4,000.

- Uniontown, PA, USA

problem #33

Apr 012024

F-150

  • miles
Exhaust Heat Exchanger failure with Powerboost engine at 55k miles. This seems to fail on nearly all Ford F-150 Hybrid Powerboost engines. Ford does NOT cover this repair under the Emissions, Hybrid, or Ford Extended Service plan. This is a known failure they are not covering and is documented in NHTSA SSM 52050.

- Simpsonville, SC, USA

problem #32

Mar 302024

F-150

  • 150,000 miles
The contact owns a 2021 Ford F-150. The contact stated that upon attempting to start the vehicle, the vehicle failed to start. The check engine warning light was illuminated. The vehicle was towed to the dealer, where it was diagnosed with transmission and a battery failure. The vehicle was partially repaired. The vehicle remained at the dealer. The manufacturer was made aware of the failure and advised the contact to call the NHTSA Hotline to report the failure. The failure mileage was approximately 150,000.

- Rocklin, CA, USA

problem #31

Apr 222024

F-150

  • miles
Was slow rolling to stop light at intersection. Vehicle shut down and got an alert that said -??auto start stop shift to P, then restart engine-??

- Lexington, SC, USA

problem #30

Mar 082024

F-150

  • 77,000 miles
The contact owns a 2021 Ford F-150. The contact stated that while her husband was driving 15-20 MPH, the gears locked up. The contact stated that the check engine warning light was illuminated. The vehicle was restarted, and the check engine warning light was flashing. The vehicle was taken to the local dealer, where it was diagnosed that the cam phaser needed to be replaced. The vehicle was not repaired. The manufacturer was contacted and offered to cover 70 percent of the cost of the repair. The failure mileage was approximately 77,000.

- North Attleborough, MA, USA

problem #29

Nov 212023

F-150

  • miles
--Exhaust leak, at left first band clamp downstream from catalyst --Safety is of immediate concern due to exhaust leak directly under driver seat --Local Ford dealership service dept did not fix leak --Exhaust leak was inspected and reported to local Ford dealer service dept- NOT fixed On 20 November 2023, I purchased a 2021 Ford F-150 XL, VIN: [XXX], from Crain Ford of Jacksonville, Arkansas, 1800 School Drive, Jacksonville, Arkansas 72076. Phone 501-436-4981. After driving the vehicle for a day, I noticed a fluid leak on my garage floor under the vehicle-??s engine area. On 21 November 2023, I took the vehicle to the dealership, which I bought the truck from, Crain Ford or Jacksonville, AR. They inspected the underside and found no leaks and suggested I just keep an eye out for any fluid leaks. The next week I kept watching for leaks, and each day I saw what appeared to be a fluid leak of some type or fluid on the floor of my garage. On 27 November 2023, I took the vehicle back t o the same dealership, Crain Ford, and I showed them a video of the leak I discovered. The video can be viewed at: [XXX] As the video shows, upon cold startup of the vehicle, you can see water leaking from the band clamp on the exhaust system just below the left catalyst. I fully understand that the fluid is water and is a byproduct of the combustion system and is normal. That is NOT the problem, the problem is, if water can leak out at the band clamp on the exhaust system, as shown, then so can deadly exhaust fumes right under the driver area. I showed the video to the Ford service dept foreman and he had a technician check the exhaust and assured me that the band clamps were at factory spec torque and they could smell or observe no leaks. I took the vehicle home. The next morning, there is still a deadly exhaust leak occurring at the band clamp on the exhaust pipe as I can see water dripping out, just as the first video showed INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

- Jacksonville , AR, USA

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