2020 Ford F-150 Complaint Log

The contact owns a 2020 Ford F-150. The contact stated while driving at an undisclosed speed, the contact heard an abnormally loud pop. The contact drove the vehicle to the shoulder of the road. In addition, the contact stated that the transmission was slipping. The automatic transmission failure warning light was illuminated. The contact turned off the vehicle. The vehicle was restarted and driven to the residence. The vehicle was then towed to the dealer where it was diagnosed with transmission failure. The contact was informed that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was not made aware of the failure. The failure mileage was approximately 126,000.

The contact owns a 2020 Ford F-150. The contact stated that while her husband was driving approximately 20 MPH, the check engine warning light illuminated. There was an abnormal burning odor coming from the vehicle. The driver drove to the residence. The vehicle was turned off and restarted and there was smoke coming from the engine with a loud screeching sound. The vehicle was taken to the local dealer, where it was determined that the cam sensor was defective and caused the engine to overheat. Additionally, the engine was low on oil. The contact stated that an oil change was previously performed. The vehicle was not repaired. The manufacturer was contacted, and a complaint was filed. The manufacturer confirmed that the VIN was not under recall and that there was no financial assistance available. The failure mileage was approximately 102,000.

The contact owns a 2020 Ford F-150. The contact stated upon attempting to replace a flat tire with the spare tire, the contact noticed that there was a hole in the spare tire. The contact determined that the mufflers had burned the spare tire due to the spare tire location in the vehicle. The dealer and the manufacturer were notified of the failure, but no assistance was provided. The manufacturer informed the contact that the VIN was not included in a related recall. The vehicle was not diagnosed or repaired. The vehicle remained in a parking lot. The tire had not been replaced. The failure mileage was approximately 65,000.

Ford 10r80 Transmission slips or revs for long period of time before banging into gear when accelerating. When accelerating and merging onto the highway I am unable to merge and accelerate to highway speed without the risk of being rear ended by oncoming vehicles already at highway speed. The vehicle has been inspected and confirmed that the transmission needs to be replaced. No other lights and absolutely not warnings at any time before problem started. As per TSB 23-2250 and several earlier TSB on this transmission, having a known defect, Ford should escalate this to a recall and compensate owners for the expensive repair when the vehicle should have plenty of more life in it.

The passenger side front brake overheated while driving at highway speed. We stopped the truck after smelling the burning odor. The rotor was blue and radiating heat. The driver's side appears normal. Inspection revealed the lower caliper piston was stuck. The piston boot was removed and significant corrosion was found. Truck has 60,000 miles. We are the original owners.

I have a 2020 F150 King Ranch with 64K miles on it. It has always shifted harshly, but I had thought that was just the issue with the design of the 10-speed transmission. Right after 60K miles, the transmission would stay stuck in 1st and rev the rpms high and then jump to 4th. There were other times where the transmission would harshly jump up or down gears. I took it into the local Ford dealership to be reviewed. Of course, this is another case of a faulty 10R80 transmission. I had to get the entire transmission replaced. An almost $10K repair and Ford Motor Co only covered $3800 of it. This is unacceptable, dangerous, and quite frankly irresponsible of Ford. I called the Ford Customer Service three times, each of which, they referred me back to the local dealer (who referred me back to the Ford Motor Co case). Some quick background. I'm a very loyal Ford customer. I've owned 3 F150s, an Expedition, and a Ford Fusion. I get all of my services done at the local Ford dealership. I've never had a transmission go out and especially on such a new truck. ** I rarely tow, so this hasn't been a truck that has been towing a lot of weight (I've towed 4 times with a trailer < 4000 lbs). Customers shouldn't have to pay over $5K for repairs on a truck less than 5 years old that cost over $70K (and 4K miles beyond the Powertrain warranty). That's ridiculous. Ford should step up and do the right thing and recall these transmissions for the customers experiencing problems. I now know of 6 personal people (in a small town) that has the same issue and the dealership is full of trucks with the same transmission problems.

There is a flaw in the design of the 2020 F150 and specifically the 5.0L V8 Engine. I have kept up to date on all maintenance, no visible oil spils and engine is consuming/burning significant amounts of oil. I've been told by numerous dealerships/mechanics that there is nothing that they can do and to try and join all of the class action lawsuits. I spent 50k on a vehicle that isn't even making it thru the life of the loan..... WHY DO I HAVE TO DO A CLASS ACTION. THIS SHOULD BE CONSUMER PROTECTION.

I have a 2020 F150 with just over 58,000 miles. I work from home, and do not tow. While driving up a four lane highway to Boone, NC, my vehicle's transmission appeared to get 'confused' and threw a fault. I took my truck into a dealership to have the issue resolved, and was told that I needed an entirely new transmission because the CDF drum was failing to the tune of almost $10,000. I have brought the issue of hard shifting, and the transmission slipping up to Crossroads Ford of Kernersville previously, but they have refused to look at it because of it was not throwing a code. I called Ford, and they stated that the vehicle would have to encounter a total failure with the transmission before they would look at it. They referred to me driving on a four lane highway to a higher elevation as extreme driving conditions. [XXX] was built in 1930, which is they road they referred to as 'extreme'. From there, the manufacturer told me that they would cover 40% of the repair. To me, this indicates a known issue with the vehicle's transmission and CDF drum and requires a recall to be issued by Ford Motor Company. This is a known issue amongst many F150 owners, and a simple google search will show that many drivers have experienced this. This has been addressed by TSB 22-2428, but Ford should be responsible for manufacturing a defective product. I do not tow, do off-road activities, and I work from home. There is no scenario where my actions should cause this type of failure. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

While driving on the interstate doing around 70 MPH I I Stanton drive up a fairly steep hill on the road . About half way up the truck down shifted from 10th gear too what it said was 7th. The gear did not engage and the truck revved up like it was in neutral. I pulled over immediately. Checked under the truck and no leaks. Got back in and truck ran like normal. Went to the dealer and was told that is a common issue with this particular transmission. I also have noticed when driving and coasting too a stop when the truck downshifts there is sometimes a loud clunking sound. Ford needs to be help responsible for putting trash transmissions in these vehicles. Please advise them to issue a recall and repair or replace them.

The 10-speed transmission downshifted from 10th gear to 1st gear, and then back into 10th again. This sequence happened 3 times in a row, with the 3rd causing a service light to be displayed. This occurred while on the highway with cruise control set at 75mph. The truck is available for inspection upon request. This transmission malfunction caused an abrupt and rapid deceleration, as well as, a loud clunk and temporary lockup of the rear end. The deceleration and loss of power had the potential to cause an accident with cars around me, or a loss of control from the rear end. There are an overwhelming amount of reports of this same issue online, as well as, numerous at the dealership. My truck has been to the dealership and they are claiming it is due to overfilling of transmission fluid during my recent transmission rebuild.

With 72,000 miles the driver's side spring broke just setting in our driveway. Unknown to my wife who drove it 7 miles to work with a broken suspension spring. Within 200 miles the other spring broke on the passenger front while going down the road. Didn't hit a bump and was going straight. This one also snapped with no notice and i had visually inspected it days before. We were going 15-20 mph when it broke and were able to safely pull off the road. Unheard of them breaking when the vehicle is only driven on the paved roadways and not off used off road. Cost approximately $1,200 to just repair the driver front at a shop.

The contact owns a 2020 Ford F-150. The contact stated that while driving with the cruise set at approximately 65-70 MPH and passing in the left lane, the accelerator pedal was depressed and there was an abnormal clunking sound while downshifting. The contact pulled over and restarted the vehicle. The contact stated that the “WRENCH” symbol was displayed. The vehicle was taken to an independent mechanic who retrieved DTC: P07F7 - Indicating a failure with the 10th gear in the transmission. The vehicle was taken to the local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was repaired. The manufacturer was contacted and confirmed there was no warranty coverage on the vehicle. No assistance was provided. The failure mileage was approximately 65,000.

Transmission would shift into different gears when not intended

The contact owns a 2020 Ford F-150. The contact stated that upon starting the vehicle, there was an abnormal rattling sound coming from the engine compartment. After the vehicle reached normal operating temperature, the rattling ceased, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. After investigating the failure, the contact related the failure to Customer Satisfaction Program: 21N03. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was unknown.

The contact owns a 2020 Ford F-150. The contact stated while driving 65 MPH, the transmission failed to operate as designed, and the vehicle started losing motive power. The contact stated that the vehicle jerked and briefly hesitated while the transmission was unexpectedly downshifting to fourth gear, and then downshifted to first gear. The vehicle returned to normal functionality after the failure. There was no warning light illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was not yet repaired. The manufacturer was notified of the failure, a case was filed, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was approximately 120,000.

The contact owns a 2020 Ford F-150. The contact stated that the vehicle made an abnormal rattling sound on cold start. The vehicle was taken to the dealer, where it was diagnosed that the cam phasers had failed and needed to be replaced. The dealer informed the contact that the vehicle was not covered under Ford Campaign Number: 21N03. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the VIN was not included in a recall. The manufacturer referred the contact to the NHTSA Hotline for the VIN to be added in a recall. The failure mileage was approximately 137,000. The VIN was not available.

I was driving on Loop 610 with stop and go traffic and after a lot of restarts the engine almost did not restart. If it would have not restart I would have been trapped in traffic in a mid lane which would have resulted in a various dangerous situation. Ford needs to install a switch to allow owners to disconnect the device that kills the engine when you stop. We are getting ready for hurricane season and based on past history if we have to do a mass evaluation we have vehicles with this devise that could result in blocking traffic and not allow people to evacuate result in potentially many lives lost.

The truck's cam phasers are rattling bad and getting worse. It used to only do it at initial start up in the morning and any time it sat for an hour or more , but now it seems to be rattling on every startup. Ford has newly designed cam phasers, but they are not offering to put those in unless I pay for it.

The power running boards are malfunctioning continuously, I have fallen out of the driver side twice and now have injury to my right shoulder trying to stop myself using the arm rest. They will either not come out or will retract while trying to step up or will not come out at all, making it extremely difficult to get into the truck without them deployed. Also, will start to deploy and stop mid-way. I will attach a photo taken today.

After completing a 200-mile highway drive with my family in the vehicle, I performed a routine visual inspection of the undercarriage. During this inspection, I immediately noticed that one of the front coil springs appeared to be off-center in relation to the shock assembly. Upon closer examination, I discovered that both front coil springs had shifted significantly out of position. Even more alarming, the coil spring on the passenger side had a complete fracture—it was fully cracked through. In addition, the misalignment of both springs had caused visible damage to the shock bodies, suggesting metal-on-metal contact had been occurring during operation. This is not a wear-and-tear issue or a cosmetic concern—this is a catastrophic suspension failure on a relatively new and well-maintained vehicle. Coil springs are a critical structural component designed to support the weight of the vehicle, absorb shocks, and maintain proper handling and ride height. A complete failure of one coil spring, coupled with misalignment of both, indicates either a serious design flaw or material defect. Had this failure progressed during our highway drive, especially at speed or during an evasive maneuver, the consequences could have been tragic—not only for my family, but for other drivers on the road. The loss of suspension integrity at highway speeds could lead to sudden loss of vehicle control, steering instability, or even a rollover. The fact that this occurred without any warning signs (no abnormal noises, ride quality changes, or handling issues were noticed prior to inspection) makes it even more concerning. This type of failure should not be happening on a modern pickup truck, especially one marketed for its toughness and reliability. I am filing this complaint in the hope that NHTSA investigates whether this is an isolated incident or part of a broader issue affecting other 2020 F-150s. If other vehicles are at risk of similar suspension failures, this poses a serious publ

While driving down the road the transmission in the truck made a load noise and now the truck will no shift properly. Because of this I could have been hit from behind by another truck by the sudden shifing problems from the transmission. This truck has jumped in reverse before and has had transmission problems ford has refused to adress. This is the second powertrain problem to happen in this vehicle going down the road.

At 63mph my transmission started shifting erratically between gears, jumping into 1st gear twice. The transmission is being repaired by Ford at my expense now. There were no warning lights or previous indications. The 10R80 transmission is dangerously flawed and should be recalled by Ford

The padding on the headrest part of the car seat is broken.

Acceleration without foot on gas pedal, erratic & harsh shifting, and slipping gears

Transmission routinely drops from 4th to 2nd rapidly decreasing speed (~40 to 20 mph) with loud clink. Maybe one day it will lock up. Took it in for warranty: “It will progressively get worse until just outside of warranty, then we’ll replace the transmission.”

The contact owns a 2020 Ford F-150. The contact stated while driving at an undisclosed speed and attempting to accelerate, the vehicle jolted into gear, prompting the contact to return to the residence. After arriving at the residence and shifting the vehicle into park, upon releasing the brake pedal the vehicle briefly started to roll away. The contact also heard an abnormal humming sound coming from the engine compartment. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The contact was informed that the transmission needed to be replaced. The manufacturer was notified of the failure, a case was opened, and the contact was referred to the NHTSA Hotline for assistance. The failure mileage was 26,000.

TRANSMISSION STALLED INTO FIRST, WOULDNT ALLOW YOU TO PUT VEHICLE INTO GEAR UNLESS YOU TURNED VEHICLE OFF AND BACK ON. FORD SERVICE CENTER VERIFIED CONCERN IN PARKING LOT. VEHICLE STARTS IN FOURTH GEAR AND LUNGES VERY ROUGH. NO DTC. FLUID LEVEL FULL BUT VERY DARK WITH FINE METAL CONTAMINATION PRESENT. PERFORM CDF TEST. RESULTS FAIL. CDF BUSHING HAS SLIPPED COMPLETLY BLOCKING FLUID PORTS. ALSO SUSPECTED HUB BASKET HAS WORN GROOVED FROM F CLUTCH APPLICATION CAUSING FINE METAL IN FLUID. OVERHAUL NEEDED FOR REPAIR Safety concerns: my truck stalled in an intersection which put me, my pregnant wife, and our [XXX] daughter at risk of being hit by another vehicle. After speaking to multiple services centers (both Ford and 3rd party), I was told by *all* of them that they've been replacing 10-speed Ford transmissions like crazy these past few months. My vehicle is currently at a certified Ford dealership pending repair. Currently contesting a denial in financial assistance considering the vehicle is within the 5 year powertrain warranty (the vehicle had an initial 5 year, 60,000 mile warranty and my truck is at 72,200 miles). No warning lamps or messages occurred until the moment the problem occurred. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Ford F-150. The contact stated that while driving at an undisclosed speed, the check engine warning light illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the catalytic converter. The contact was informed that the catalytic converter needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was unknown.

Transmission shifting erratically between gears, sometimes shifts hard enough to jerk the truck. I have searched Ford owner databases and this is a common problem with the 10R80 transmissions

Transmission engages and disengages periodically as i slow down or come to a stop. Shifts erratically while driving from 6 gear to 4th gear , and when accellerating it hesitates from 2nd to 3rd gear, then shifts hard to 4th gear where i have to press on the brake to stop it. My concern is when it down shifts hard while in traffic, almost got rear ended one time. Just not safe to drive, ive have this truck for less than 5 months now. Preowned with less than 100k miles, just doesnt make sense..

Driving at highway speeds and my truck began to shake violently and very loud banging sound. Slowed down to pull over on the highway. Found driveshaft broken in half with gas dumping out of the fuel tank. Broken driveshaft damaged heat shield for gas tank, punctured gas tank and dented/broke clips on exhaust. Very lucky back driveshaft didn’t hit pot hole and leaking gas didn’t start a fire. Stranded on side of road for hours. Sent my vin to the dealership and they said my was not under the recall #21S56 even tho it was built after known driveshaft issue and clearly the insulator caused the issue.

The rear camera has stopped working all of a sudden. A blue screen comes up and says contact dealer when vehicle is in reverse. There is a ford recall for this issue but my vehicle vin is not included and sounds like it has this issue they are recalling for.

Truck shifts don’t unexpectedly and causes the vehicle to loose traction and went into oncoming traffic.

2020 Ford F-150 with 62,400 miles and a 10 speed automatic transmission. Transmission has failed! The truck is at Bill Brown Service in Livonia, Michigan. At 62,200, the transmission was not engaging and disengaging when ever it wanted to. This has happened several times and resulting in inability to drive and control the vehicle. This had happened previously over the past few weeks but only in a parking lot or the driveway. Now it is happening every time the vehicle is driven. Ford said the repair would be $3,500 to $4,500. They have offered me a discount and my portion would be $1,600. This truck has never towed a trailer, never had a hitch in the receiver and been offroad or barely on a gravel road. All maintenance has been done to this vehicle and was due for transmission fluid replacement. Ford should bare all of the cost for the transmission repairs and should recall this transmission before someone gets injured. I have the same transmission in a Ford Explorer that has had to be worked on two or three times now. Thank you for your consideration in this matter [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

The contact owns a 2020 Ford F-150. The contact stated that while driving at an undisclosed speed, the vehicle briefly hesitated. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to the dealer, who diagnosed a failure with the transmission. The vehicle was not repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 130,000.

The contact owns a 2020 Ford F-150. The contact stated had received notification of Manufacturer Recall Number: 24E12. The contact stated that the vehicle had not experienced any failure; however, the vehicle was taken to a dealer where the PCM module was updated as per the recall. The contact stated that 15 hours after the repair, the check engine warning light illuminated. The manufacturer was notified of the failure. The failure mileage was 126,000.

*Engine failed - Rattle was detected and after dealership took a look at the vehicle, it was determined that the engine needed replaced because the truck was consuming oil at a high rate and there was metal found in the manifold. *If I continued to drive a truck with low oil, a failure of engine/engine fire could have occurred (oil was changed 2 weeks prior to inspection). *Confirmed by dealer *Vehicle was inspected by dealership *No warnings, just a very subtle rattle at low speeds that was concerning. Engine ran fine otherwise. Rattle first appeared around $45k miles.

The contact owns a 2020 Ford F-150. The contact stated while the vehicle was parked and occupied, while attempting to start the vehicle, the contact heard an abnormal ticking sound coming from the engine. A dealer was contacted. The vehicle was taken to a dealer where it was diagnosed with cam phaser failure. The contact was informed that the cam phaser needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure and opened a case. The approximate failure mileage was 94,000.

f150 EQUIPED WITH 4r80 10 SPEED TRANSMISSION. Starting several months ago, the vehicle started experiencing up shifts with hesitation during upshift, typically the mid gears. Starting from a stop, the shift from 1st to 3rd is very harsh and stutters. Condition has progressively gotten worse. While upshifting, I am now experiencing more exaggerated pausing/delays during mid gear upshifts. While entering a freeway, accelerated to merge with traffic and the transmission downshifted and there was an approximately 2 second delay in the shift which caused the vehicle to bog down substantially, nearly causing a following vehicle to impact my vehicle.

Tailgate came open events, while no one in the truck previous recall fix did not work as Google is stating the original recall fix did not work.

Transmission has hard shifts between 2-3 and 4-5. Transmission occasionally has unexpected hard down shifts. Truck has done it since purchase and has progressively gotten worse.

Erratic down shifts stalls at lights

Vehicle is equipped with the 10r80 ( ten speed ) transmission. Vehicle hard shifts and hard down shifts. It also searches for gears so if I am in cruise control or driving approx 55 the vehicle will drop out of gear, search for a gear then slam back into the correct gear; at random

While driving on a high traffic street in stop and go traffic truck shifted down from 3 to 2 with a lurch and a verry loud clunk. Truck shifted so hard there was rapid deacceleration and lurching and a loud clunking while shifting.

On the afternoon of [XXX], my son and his fiancé were driving home from college (Lamar University) when my sons 2020 Ford F-150 suddenly downshifted from 10th gear to 1st gear. This sudden unexpected downshift through them both violently forward in the truck and almost caused them to be rear ended by an 18-Wheeler. They immediately pulled off to the side of the Interstate ([XXX]) to gather their thoughts and inspect the truck. My son notified me of what had just happened and that he received a service engine warning on the trucks instrument cluster along with a notification on his cell phone of a Powertrain Malfunction. I suggested he try turning the truck off and restarting it to see if it would resolve the issue. He resumed driving home and experienced the same unexpected sudden down shifting from 10th gear to 1st gear multiple times as they continued their drive home. Fortunately, he was able to limp his truck back into town and immediately took it to Cook Ford in Texas City where we had purchased the truck. I met them at the dealership and my son reported the problem they had experienced on their drive home to the Cook Ford Service person and we left the truck with them to be diagnosed. On Wednesday March 26th 2025, Cook Ford called to inform my son and informed him that he needed a new transmission and that both his catalytic converters needed to be replaced for a cost of approximately $11,500. He asked them if these items were covered under warranty and they acknowledged an error in their quote and that the catalytic converters would be covered, but not the transmission. During the conversation the Ford Service person did acknowledge knowing of issues with the 10 speed transmission (10R80) but said there were no current recalls, nor were there any Ford Customer Satisfaction Programs for the trucks transmission. We are now waiting for a response back from Cook Ford with an updated and formal breakdown of costs for the trucks needed repairs. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION A

The contact owns a 2020 Ford F-150. The contact stated while driving at an undisclosed speed, the accelerator pedal was depressed; however, the vehicle failed to accelerate as intended. In addition, the check engine warning light illuminated, and the transmission shuddered. The vehicle was taken to the dealer, and the contact was informed that a tune-up was needed. The tune-up was performed; however, the failure reoccurred. The vehicle was taken back to the dealer where it was diagnosed with catalytic converter failure. The contact was informed that the catalytic converter needed to be replaced. The vehicle was not repaired. In addition, the contact stated that the vehicle was repaired under an unknown recall and the PCM was reprogrammed. The unknown recall repair was performed the day prior to the failure. The manufacturer was made aware of the failure. The contact was advised to contact the NHTSA Hotline to report the failure. The failure mileage was approximately 90,400.

Door lock stopped work.

Transmission random acceleration, harsh downshifting, and banging coming to a stop. 3 to 5 gears and during emergency stop. Downhill acceleration without throttle while braking, overtaking brake control

While driving the vehicle going approximately 35 mph in heavy traffic the vehicle shifted to neutral without driver input as evident by +8000 rpms (bottomed out) and swift deceleration. No warning lights or indicators. No response when driver input to acceleration pedal. Vehicle would not shift into gear. After breaking to approx 15 mph Vehicle shifted VERY roughly w/no accelerator response and return to normal rpms. After waiting in neutral on the side for a minute accelerator response returned. hard and delayed shifting remained. Vehicle is currently being serviced by a ford dealer in Florida who relays no warning or trouble codes found - but recommended a transmission rebuild reference black fluid w/o leaks. Fluid was initially a quart and a half low. Transmission has an extended warranty and is getting replaced. 10r80 10 spd transmission with the EXACT same issue for the recent recall of a different year/ transmission model # by ford. Coincidence- I think not.

I am writing to report a serious safety issue with my Ford F-150. On March 15th, 2025 while driving on State Route 167 - 410 in heavy rain, my vehicle experienced an intermittent engine shutdown while in motion. Second time happened to my wife while leaving the neighborhood on March 18th, 2025. Specifically, the engine completely shut off while driving at 40 mph. This occurred despite the Auto Start-Stop feature being manually disabled. Upon the engine shutdown, the Driver Information Center (DIC) displayed the message, "Auto StartStop Shift to P, then Restart Engine." The car did not lost power and I needed to do a full stop, shift to P, restart and switch back to D to continue driving. This malfunction occurred under hazardous conditions, specifically during heavy rain on a freeway. The sudden loss of engine power created a highly dangerous situation, placing myself and other drivers at significant risk. I am deeply concerned about the potential safety implications of this issue. The fact that the engine shut down while driving, even with the Auto Start-Stop feature disabled, suggests a critical malfunction that requires immediate attention. Despite having an extended warranty and the serious nature of this safety concern, the service department from Sunset charged me money for an unsuccessful diagnosis after two days, with service advisor unable to identify or replicate the problem.