What 162 owners told NHTSA about the 2021 Hyundai Santa Fe

My check engine light came on, and my car was also feeling "sluggish" and slow to accelerate. I scheduled a service appointment at my local dealer 4 days later. At the appointment, the technician stated everything checked out okay and the check engine light was likely an "anomaly" or "outlier" but otherwise nothing to be concerned about since everything checked out "okay" and no problems were identified during their test drive. However, that very afternoon, I was driving down the interstate, where the posted speed limit is 70mph, when my check engine light came on again and suddenly lost power, drastically reducing my speed and could not accelerate faster than 39mph. Luckily, the interstate was not busy at the time (about 10:30-11:00 a.m. Saturday morning) and there were only less than 4 cars behind me that were able to easily switch lanes and pass me. I moved over to the shoulder to a complete stop and restarted my car. My check engine light remained illuminated and was still slow to accelerate and "sluggish" but was able to (slowly) reach interstate speed (60-70mph) until I reached an acceptable exit and safely made it to my destination. I have since used roadside assistance to tow the vehicle from my home to the the same dealership for inspection and service (again).

NHTSA ODI 11746250

My 2021 Hyundai Santa Fe (VIN [XXX] ) is experiencing severe engine instability, including rough idling, hesitation upon acceleration, and intermittent stalling. These symptoms align with TSB 26-FL-001H regarding defective GDI fuel injectors. The vehicle has stalled in traffic, creating an immediate risk of a rear-end collision. Despite being within the 100,000-mile Powertrain Warranty, the manufacturer is refusing to perform the required diagnostic tests (GDS Fuel Pressure Drop Test) to identify the leaking injectors. This failure to diagnose a known fuel system defect poses a significant safety risk to the driver and other motorists. The primary safety risk is unexpected engine stalling while the vehicle is in motion or stopped at intersections. Additionally, the loss of power during acceleration prevents the vehicle from safely merging into high-speed traffic, significantly increasing the likelihood of a collision. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11737002

First instance at 50-55 mph the transmission violently shook the car when downshifting to accelerate on multiple occasions. Dealership diagnosed the problem as a faulty transmission and replaced it at 44064 miles on March 18, 2025. Second time the car failed to accelerate when merging into traffic while the engine revved very high. Again it was taken to the dealership and the diagnosis was faulty transmission. A second transmission was in stalled at 51331 miles. Second transmission began downshifting hard upon accelerating at highway speeds. Retuned to dealership and diagnoses was faulty fuel injectors and all four were replaced on April 7 at 52960 miles. On April 10, 2026 the car displayed a check engine light after the car began shuttering at highway speeds and was immediately returned to dealership where it’s pending a diagnoses. Failure to safely accelerate when merging make this vehicle a safety risk.

NHTSA ODI 11731022

My vehicle loses power on the highway intermittently. I had my car set on cruise control at 55 and with no other vehicle in front of me the speed decreased to 45. It frequently sputters going up hills. My car has had 4 oil leaks.

NHTSA ODI 11730287

Car misfiring symptoms like rough or shaky idle, hesitation and loss of power during acceleration, stumbling, unusual popping/backfiring noises, poor fuel economy, and a lit Check Engine Light. Felt vibrations / heard sputtering sounds, as if the engine skipped a beat, often becoming more noticeable under load or when accelerating. Sometimes, the issue goes away after restarting the engine.

NHTSA ODI 11709148

While traveling Interstate 75in Florida en route to Venice Hyundai for routine oil change at 65 mph, vehicle rapidly slowed to 40mph, driver pressing on gas pedal but vehicle would not accelerate( while being tailgated by semi that was flashing warning headlights at me). There was burning smell while this was happening. Pulled onto shoulder and called Hyundai service for assistance tow truck brought me in. Vehicle inspected by Hyundai Venice technicians ran through computer tests all ok, tech drove vehicle not able to reproduce problem. Oil changed tired rotated. Instructions included not able to do any repair because cannot find anything wrong with vehicle please contact us if problem recurs. I have had several conversations with service advisor voicing serious safety concerns regarding driving this vehicle and informing him that what occurred was my car went into failsafe/limp home mode which is what happens when there is serious problems with vehicle and should not be driven till repaired. And cannot repair until computer finds a code signifying problem.

NHTSA ODI 11695077

The contact owns a 2021 Hyundai Santa Fe. The contact stated that the vehicle was hesitating after a cold start. While driving at unknown speeds, the vehicle lost motive power. The contact was able to pull over and restart the vehicle. The contact's husband restarted the vehicle, and the vehicle operated as designed. There were no warning lights illuminated. The local dealer was not contacted. The contact related the failure to NHTSA Campaign Number: 22V746000 (Power Train). The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 41,122.

NHTSA ODI 11599223

The contact owns a 2021 Hyundai Santa Fe. The contact stated while driving at an undisclosed speed, the vehicle unexpectedly shifted to neutral(N). The contact pulled over to the side of the road and attempted to restart the vehicle; however, the vehicle failed to start with the check engine warning light illuminated. The vehicle was towed to a dealer and was diagnosed with engine failure. The contact was informed that the engine needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was approximately 67,000.

NHTSA ODI 11598688

When I press the pedal to acelérate it has no power to move on drive or reverse and other problem power off when I drive on the road.

NHTSA ODI 11590478

My sante fe has shifted out of park and rolled away from me on 2 occasions. The first time I was about 30 feet away when my son and husband started screaming for me. The car we rolling across the parking lot. I tried to jump in and hit the brake but was unsuccessful and we slammed into a flag pole. The dealer ran a code reader on it and there was no codes so they denied responsibility. Basically called me a liar [XXX] it happened again In McDonald's drive thru The window lady witnessed it. I got out to.get my debit card and as I was leaning down the car rolled out of park snd started coasting away from me. I again, contacted my Hyundai who assigned another case manager. This case manager promised to reimburse me for a rental I paid for the first time the car rolled away from me. The case worker had told me she set up an appointment at another local dealer and they would have a rental waiting on me the next morning I asked her to call amd confirm the appt and rental and to call me back Never heard from her again After numerous calls and emails I recieved an email stating she could no longer assist me since I had obtained legal counsel. Complete lie I never informed them that I had retained counsel. I merely asked if I needed one. . This was their way of brushing me off for the 2nd time Myhyundai has record of me calling trying to gather a resolution at least 30 xs. I have contacted the attorney general's office who reached out to my dealer and my dealer told them they followed protocol and found no issue that would be a warranty issue Of course they aren't wanting to admit that this is issue because this one case could cost millions in recalls. Now there are more and more people that have had the same experience and I fear there will be death before this is addressed. Please help !! INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11579428

While driving and must stop due to traffic light, stop sign or intersection and the auto start is on as soon I lift the foot foot from the brake pedal to continue driving the vehicle stumble and it completely stop the engine while the vehicle transmission is still in drive. In order to start again I have to switch transmission to park and turn key ignition switch to start vehicle, it start again and I can continue. While driving and must stop due to traffic light, stop sign or intersection and the auto start is on as soon as I lift the foot from the brake pedal to continue driving the vehicle stumble and it completely stop the engine while the vehicle transmission is still in drive. When I take the vehicle to the dealership the Service writer writes on the computer but they do not allow me to see a copy of what I am reporting. I like my vehicle, I just want it to be fixed and me and my two daughters be safe when needed after a mandatory stop due to traffic signs, intersection driving through or any other emergency stop and go due tragic and or road condition.

NHTSA ODI 11576264

The contact owns a 2021 Hyundai Santa Fe. The contact stated that while stopped at a traffic signal, the vehicle hesitated while depressing the accelerator pedal. The contact stated there was no warning light illuminated. The contact stated that the failure was intermittent. Additionally, the contact stated that while the vehicle was in reverse(R) the back over protection camera screen was black. The contact stated that after turning off the vehicle, the reverse image screen operated as needed. The contact had not taken the vehicle to a local dealer or independent mechanic. The vehicle was not diagnosed or repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 16,000.

NHTSA ODI 11573313

April 2022 My 2020 one, Honda Santa Fe started rolling backwards in rolling to a flagpole as I was walking away from the car. I tried to to catch up with the car. It had my family inside screaming. But I was unable to stop it from slimming into the fireplace. I let Hyundaiusa know. They recommended that I take the car to the dealer. They promised to reimburse me for rental car after the diagnostic came back. they found nothing wrong with the car and never paid for the reimbursement Now September 2023. Same thing just happened again. I was in McDonald's drive through and I drop my debit card so I got out to get my debit card. I got out of the car and had to close the door and as I bend down at sensed the car start starting to pull away. The car once again started running away for me. I was outside the vehicle, but I was able to jump in the car and apply the brake before it slammed into McDonald's. I have made a police report. And I have a witness from McDonald's That saw the incident. I had already reached out to the attorney General's office About the first time the car rolled away from me in April 2022. They claim that my Hyundai found nothing wrong with the diagnostics. There was no argument I can make except for Being called a liar. The mechanic did a little demonstration showing us how the safety mechanism in the Santa Fe makes it impossible for the car to roll out of park if the doors open or. How it's impossible. Even if the door is open, it shifts back to park. If you hit the drive button with the doors open It automatically shifts to park. .. So there's supposed to be "no way. The car can shift out of park into drive or neutral." It rolled away in 2022 April, and it did it again September 2023.

NHTSA ODI 11546124

During low speeds the car stalls out which could cause a safety issue for my family

NHTSA ODI 11544648

I have been having problems with the vehicle. Apparently it has problems with the start-stop system ; the car turns off even while driving , sometimes it turns on and off by itself while driving . Took it to the dealer and unfortunately this continues to happen. It worries me because while driving on the expressway it turned off and then on by itself leaving me without control of the vehicle for a few seconds . Another incident was in a drive thru, it turned off completely ; i hit the breaks but everything got locked / hard making me hit the yellow pole of the drive thru . Very upset with this vehicle another issue is the Ac stopped working only with 26k Miles. Still waiting for the appointment it’s been 2 weeks and no one solves this issue. My lease is also over but i want to let everyone know this is not vehicle for you. I do not recommend.

NHTSA ODI 11540213

There were 2 instances where my vehicle stopped. Once I was driving 15mph and it said “Put car in Park”. The 2nd, I was driving 45mph and the vehicle said “Step on the Brake to start car”. I have also had 2 instances where my odometer just keeps going up and down. He 2nd instance, the car was making a ticking noise and hazard along with other lights were flashing.

NHTSA ODI 11518995

The contact owns a 2021 Hyundai Santa Fe. The contact stated while driving 70 MPH, the vehicle lost motive power and stalled without warning. The vehicle was not able to restart and was towed to the dealer. The dealer stated that the engine needed to be replaced. The vehicle was repaired; however, the failure recurred two weeks later. The vehicle was towed back to the dealer where the failure was diagnosed as a computer mapping failure which was resolved by the replacement of an unknown part. The contact stated that the dealer informed her that they could not provide a detailed repair bill without contacting the manufacturer for permission to provide it to the owner. The manufacturer was notified, and a case was opened. The approximate failure mileage was 37,500.

NHTSA ODI 11517859

When driving on the highway the suv would not change gears. It felt like it was stuck in 1st gear, reving very high. Was unable to move the suv to the side of the road. Came to a stop with heavy traffic blowing there horns. Put the suv into park, switched it over to sport mode and was able to get going. This is the third time the suv has lost power. Also have noticed the transmission has been taking to long to change gears.

NHTSA ODI 11509437

On January 26th, 2023 at 9:57am the vehicle was unable to shift into reverse, drive, or neutral. The vehicle's system sent automatic messages indicating to have the transmission control system checked. We had the vehicle towed to a Hyundai dealer to be serviced. The dealership advised they performed a software update and that nothing else needed to be done. Then on January 30th, 2023 at 7:44pm the vehicle's check engine light came on and the vehicles system sent us another notification to our phone and email that there was a transmission control system issue. The vehicle shakes abruptly when accelerating after a stop. I have photos of the warning messages as well as video of the car shaking.

NHTSA ODI 11504811

Recall 236 -transmission problem. Manufacturer has not resolved this issue to date putting lives in danger of injury or death

NHTSA ODI 11503504

I was accelerating after being at a stop sign onto a major two lane road when all of the warning systems came on and the car stalled while the front of the car was partially on the major two lane road. The alarms, including the collision warning were going off, and it took me several minutes to restart the engine. I was very lucky that I was not hit by oncoming traffic. This was immediately reported to our local Hyundai dealer. They took two weeks to schedule our appointment and then told us nothing was wrong and that everything "checks out". Today, I receive the recall notice telling me the loss of power "could increase the risk of a crash" and yet they do not yet have a fix for it. This means I am paying for a car that is unsafe to use with no remedy in sight. Had this occurred on the highway, I would have been killed.

NHTSA ODI 11497009

The contact owns a 2021 Hyundai Santa Fe. The contact stated while driving at various speeds, the vehicle stalled. The check engine warning light was illuminated. The vehicle was taken to the local dealer however, the mechanic was unable to retrieve a fault code. The contact stated that while her husband was driving approximately 35 MPH, the vehicle stalled without warning. The contact was able to coast off the roadway. The vehicle was towed to the local dealer where it was diagnosed and determined that the transmission needed to be replaced. The vehicle was not repaired. The manufacturer was contacted but no additional assistance was provided. The contact stated that the failure was related to NHTSA Campaign Number: 22V746000 (Power Train). The approximate failure mileage was 13,000.

NHTSA ODI 11497116

The contact owns a 2021 Hyundai Santa Fe. The contact stated while making a turn from a complete stop, the vehicle responded but suddenly stopped. There was no warning light illuminated. The contact turned off and restarted the vehicle 5 minutes later. However, upon depressing the accelerator pedal, the engine made abnormal roaring sounds. The contact was able to drive after several attempts and pulled into a parking lot, however, the failure reoccurred. The contact restarted the vehicle and pulled into a parking spot. The vehicle was towed to the dealer where the failure could not be duplicated. An unknown software update and an unknown repair were completed; however, the vehicle hesitated to respond while driving and depressing the accelerator pedal. Additionally, the check engine warning light was illuminated. The vehicle was taken to a second dealer, Key Hyundai (4660 Southside Blvd #100, Jacksonville, FL 32216) where it was diagnosed that the transmission needed to be replaced and that the failure was associated with NHTSA Campaign Number: 22V746000 (Power Train). However, the parts for the recall repair were not available. The vehicle was not repaired. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the failure and a case was filed. The failure mileage was approximately 11,900. Parts distribution disconnect.

NHTSA ODI 11496616

There were two warning (?) "bings" from the instrument cluster and then vehicle completely lost power and would not exceed maybe 2 MPH. Vehicle had forward drive, but no willingness for engine to speed up beyond idle speed. Was like this for several city blocks until I was able to restart at a traffic light and then it resumed normal operation. Did not notice any warning lights and no messages popped up in the instrument or vehicle display. Just the two "bings" before power loss. This is actually the second time this has happened. Last time was while accelerating on a freeway onramp, but vehicle corrected itself more quickly and without need for restart.

NHTSA ODI 11496467

Car was bought approximately a year and a half ago and it was working fine until last September 2022 when it started to stall the engine when having ISG (Idle Stop and GO) ON. It has no pattern, but during the last 2 months it has shut down more than a dozen times. I've taken the car for inspection at Hyundai (2 times so far) and they can't find any faults when running a scan and said that they car is just fine. They assured that an ECM update would solve the issue but it has not improved anything in the car. The car has continued the pattern , when you stop the car it starts to shudders before stalling the engine, all without any error lights. Next November will be the third time bringing the car for the same issue without any resolution. Also, as a minor problem, it has started disconnecting the cellphone from the apple car and you can't reconnect it unless you turn off the car.

NHTSA ODI 11490423