What 87 owners told NHTSA about the 2024 Hyundai Tucson Fuel Cell

Seatbelt is not fastening in the rear center seat

NHTSA ODI 11751464

This has happened twice now. When going at a low speed, once in traffic, once while performing a U-turn, while braking, the car is trying to accelerate. I have to practically stand on the brake pedal to avoid the car lurching forward. I saw no warning lights on the dashboard. I haven't yet brought the vehicle to a dealer or service center, but it will be.

NHTSA ODI 11751431

Center rear buckle fails to latch. Plastic case separated after normal operation of closing/folding down the rear seat. Buckle case separated from buckle latch. Buckle would latch with plastic cover missing, however would be a considerable risk, as a the retaining bar feature is not captive to the buckle and would separate in use, if used. As well as a pinch hazard. The center buckle was only use a handful of times and is free from contamination/debris. A safety buckle shouldn't fail under normal operation of folding a seat as designed. The seat folding action caused the buckle casing to pop off and separate.

NHTSA ODI 11749777

Subject: Urgent Drivability Concern – 2024 Hyundai Tucson (6/22 Incident) Vehicle: 2024 Hyundai Tucson Date of Incident: XXX Trip Details: [XXX] to [XXX] (~160+ miles) Summary of Issue: During a long-distance drive on XXX, the vehicle experienced severe and consistent drivability issues that created unsafe driving conditions. Symptoms Observed: •Severe loss of acceleration / stalling behavior throughout the entire trip •No check engine light illuminated at any time •When pressing the accelerator: oTachometer increased (RPMs rising) oVehicle speed decreased or failed to increase appropriately •Significant delay in acceleration, especially when: oMerging onto the interstate oPassing other vehicles •Cruise control behavior: oSeemed to manage acceleration more effectively than manual throttle oHowever, still exhibited slow response when additional acceleration was required •Auto Start/Stop system: oSystem automatically disabled itself oWould not allow reactivation during the trip Safety Concern: This condition made it difficult and unsafe to: •Merge into traffic •Maintain appropriate highway speeds •Execute passing maneuvers Dealer Visit (Near [XXX]): •Vehicle was inspected after sitting for a couple of hours •Dealer reported no issues found •However, the problem was persistent and clearly present during operation under driving conditions Took vehicle to a dealership in Raleigh and asked that they look at the fuel injectors. They determined that all 4 injectors were failing and replaced them under warranty. Concerned that Hyundai America has not issued a recall as driving the vehicle with this issue creates a serious safety concern that would lead to injury or loss of life INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11748709

On February 25, 2026 the car was brought to the service department where it was determined that a front tire had a separated belt which caused vibrations and failure to accelerate . On June 16, 2026 the car was brought to the service department for the same thing. Again a tire had a separated belt again 235/55R19101H

NHTSA ODI 11745445

Automatic emergency braking stopped the vehicle because another vehicle in front turned right.

NHTSA ODI 11744187

I was in a car accident, and air bags didn't deploy.

NHTSA ODI 11740233

The contact stated that the vehicle was taken to the dealer for repairs unrelated to a recall but recall repairs were completed unbeknownst to the contact for NHTSA Campaign Number 25V893000 (Trailer Hitches). The dealer removed the wiring harness which rendered the tow hitch inoperable. The manufacturer was notified of the issue and informed the contact that the removal of the wiring harness was the fix for the recall repair. The contact stated that he purchased the specific XRT model due to the specific feature of the tow hitch and now it is inoperable. The approximate failure mileage was 49200

NHTSA ODI 11739323

The contact owns a 2024 Hyundai Tucson. The contact received notification of NHTSA Campaign Number: 25V893000 (Trailer Hitches); however, the part to do the recall repair was not yet available. The contact stated that the dealer had exceeded a reasonable amount of time for the recall repair. The contact stated that a recall repair appointment was scheduled with the dealer and the vehicle was taken to the dealer for the recall repair; however, the dealer informed the contact that parts were not yet ordered. The contact was concerned about the fire risk warning associated with the recall. The manufacturer was not made aware of the issue. The contact had not experienced a failure.

NHTSA ODI 11739053

On Wednesday, May 13, 2026, I turned off the highway and came to a stoplight. While preparing to accelerate as the stoplight turned green, I heard what sounded like a gunshot and saw that my entire rear window had spontaneously shattered. There was no external impact which caused this to occur. I have photos of the incident. Although my one year old son was not in his rear facing car seat at the time, if he had been, he would have been at risk of injury due to glass fragments. I was at risk as the sound startled me into breaking when I should have been accelerating with the rest of traffic and it left my interior exposed to the elements. I am scheduled with Safelite repairs through my insurance company to repair the window on Monday, May 18th. There were absolutely no messages or any symptoms prior to the spontaneous shattering of my window. After researching, according to Chimicles Schwartz Kriner & Donaldson-Smith LLP, there is currently an investigation for a potential class action lawsuit regarding an alleged defect of my make and model causing spontaneous rear window shattering.

NHTSA ODI 11737966

Hyundai Recall 290 was performed on my vehicle by an authorized dealer. Because Hyundai has not manufactured or supplied the necessary extension cable connecting the new module to the hitch, the remedy is incomplete, and my factory-purchased towing equipment is now entirely inoperable. The Dealer has stated "CAMPAIGN COMPLETE" and has no plans to get the necessary cable.

NHTSA ODI 11737596

The Manual Speed Limit Assist, or MSLA, feature unintendedly activated while I was driving, nearly causing a collision. I was initially unable to deactivate this steering-wheel based feature, as: (1) I did not intentionally press any buttons to activate it, and: (2) I had to balance the need to visually monitor other vehicles on the highway to avoid a collision and simultaneously figure out how to cancel this feature, which places a limit on the speed that the vehicle can travel. Instead of claiming that this feature malfunctioned, I am claiming that it is an egregiously, poorly designed and dangerous feature. The button to activate it is located on the steering wheel; consequently, a driver can easily activate it without meaning to do so. This inadvertent activation happened to me twice, each time impeding, however briefly, my ability to safely navigate a busy road. This feature was not identified when I purchased the vehicle; however, earlier this year Hyundai belatedly sent a letter to its customers titled "Understanding Manual Speed Limit Assist (MSLA) Feature," pointing out how to activate and disengage the feature (and providing a link to a website for a tutorial with more information: [XXX] . INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11736842

The contact owns a 2024 Hyundai Tuscon. The contact stated that while driving 55 MPH the vehicle rear of a second vehicle during the failure the no safety features had activated including the airbag, collision avoidance features. During the incident the vehicle collided with the same vehicle twice although the brake pedal was pressed. During incident the driver sustained neck, shoulder and back injuries and was unconscious and transported to the hospital. A police report was taken at the scene. The vehicle was destroy the towed away. The contact was informed that the safety sensor had failed during the incident. The manufacturer was notified of the failure, but no assistance was offered.The failure mileage was 5,000.

NHTSA ODI 11736482

Panoramic sunroof exploded while driving.

NHTSA ODI 11734707

(NHTSA Tracking Number 11726105) I am updating my existing complaint regarding my 2024 Hyundai Tucson (NHTSA Tracking Number 11726105) for an ongoing safety concern involving an intermittent warning chime while driving. This issue began shortly after I purchased the vehicle in Nov 2025 and has been reported to the dealership multiple times over several months. The warning chime occurs randomly while driving without any visible warning message or dashboard alert. This creates uncertainty because I do not know what the vehicle is trying to warn me about, which is distracting and creates a safety concern while driving. The dealership previously replaced both front seatbelt buckle assemblies after identifying intermittent high resistance as a possible cause. However, after that repair was completed, the warning chime occurred again while I was driving to the dealership for a follow-up visit. This confirmed that the issue was not fully resolved. I immediately returned the vehicle to the dealership, and they are now performing further diagnosis. I was advised that if the issue reoccurred, the next possible areas for diagnosis could involve the instrument cluster or the control module, both of which are safety-related systems connected to warning alerts and seatbelt functions. In addition, during this same visit, the dealership confirmed there is an actual oil leak requiring repair. This is significant because when I first raised this concern after an outside inspection in December 2025, I was told it was likely leftover residue from a prior oil change. The dealership has now confirmed it is a real leak and kept the vehicle for repair while providing a loaner vehicle. Because this vehicle was sold as Certified Pre-Owned and these safety and mechanical concerns continue shortly after purchase, I remain concerned about the reliability and safety of the vehicle.

NHTSA ODI 11733868

While driving at approximately 70 mph on a highway under normal conditions, the vehicle experienced a sudden loss of engine power. A check engine light illuminated at the time of the failure, and the vehicle was unable to maintain normal acceleration or consistent speed. The loss of power created a hazardous situation in active traffic, as the vehicle could not safely maintain speed with surrounding vehicles. The vehicle was later inspected by an authorized dealership, which confirmed severe internal engine damage, including cylinder damage and engine misfire requiring major repair or replacement. No clear root cause has been provided. There were no prior warning signs or symptoms before the incident. WARNING SIGNS PRIOR TO FAILURE: NONE OBSERVED. The vehicle is available for inspection upon request. DEALER CONFIRMATION: YES. MANUFACTURER INSPECTION: UNKNOWN.

NHTSA ODI 11732364

The same incident has occurred 4 times ( [XXX] While driving on the freeway in light traffic and no vehicles in front. The forward collision sensor triggered dropping the vehicle in speed approx 30 mph almost instantaneously. This is San Diego so no snow, rain or sleet and we were driving eastbound each time with the sun at our back. Hyundai kept the car for a week for diagnostics and found nothing. We have since escalated to corporate and are going in for another round of diagnostics. We have been exceptionally fortunate that we were not rear-ended. We have since installed a dash-cam to record the next event INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11731207

The contact owns a 2024 Hyundai Tucson. The contact received notification of NHTSA Campaign Number: 25V893000 (Trailer Hitches). The local dealer was contacted and confirmed that parts were on back order. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The contact had not experienced a failure.

NHTSA ODI 11730128

Component: Engine/Powertrain/Electrical System Incident Description: I am reporting a recurring, life-threatening "Loss of Motive Power" (Dead Pedal) in a 2024 Hyundai Tucson (Alabama-built). On multiple occasions, the vehicle has failed to respond to throttle input during high-risk maneuvers, specifically while merging into 45+ MPH traffic. The vehicle "chugs" and stalls, refusing to exceed 15 MPH despite full accelerator depression. This defect leaves the vehicle and its occupants stranded and defenseless in the path of oncoming high-speed traffic. Technical Context: This vehicle is currently subject to NHTSA Recall 23V-526 (Hyundai Campaign 246) for electronic controller damage that can cause "CAN communication disruptions." I believe the "Dead Pedal" failure is a direct result of these communication disruptions between the engine and transmission control modules. Furthermore, Hyundai has issued TSB #24-AT-001H-1 for "Hesitation when accelerating," yet the authorized dealer (Ed Voyles Hyundai) has been unable to remedy the defect after 84 cumulative days out of service. Safety Risk: This is not a convenience issue; it is a critical safety failure. The unpredictable nature of the power loss makes it impossible to safely judge gaps in traffic. The vehicle effectively becomes a stationary object on active roadways without warning. Manufacturer Response: The manufacturer has been formally notified via certified legal counsel. Despite 79 consecutive days in the current repair attempt (since Jan 16, 2026), the manufacturer has failed to provide a fix or acknowledge the severity of the safety risk. An informal third-party evaluator attempted to dismiss the claim despite the vehicle's documented inability to maintain motive power. We are requesting that NHTSA investigate the adequacy of Recall 23V-526 and TSB #24-AT-001H-1, as these measures have failed to resolve this life-threatening "Dead Pedal" condition in my vehicle.

NHTSA ODI 11729169

There has been an urgent safety recall with no fix for 4 months. I need the issue to be resolved so that my vehicle is no longer a safety hazard, but both the dealership I purchased it from and the manufacturer have stated that it's not a big deal.

NHTSA ODI 11728389

The contact owns a 2024 Hyundai Tucson. The contact received notification of NHTSA Campaign Number: 25V893000 (TRAILER HITCHES); however, the part to do the recall repair was unavailable. The local dealer was contacted, and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact stated that the third brake light remained illuminated after the vehicle was turned off and the key was removed from the ignition. The tow hitch wiring harness was replaced but the failure persisted. The failure mileage was approximately 20,000.

NHTSA ODI 11727875

I am submitting a vehicle safety complaint regarding my 2024 Hyundai Tucson Hybrid. The vehicle has a recurring engine warning issue (code P0471) that has not been resolved despite multiple repair attempts by an authorized Hyundai dealership. Additionally, there is a concerning discrepancy regarding vehicle usage while in dealership custody. My records indicate a substantial increase in mileage during service, which is not reflected in official service documentation. This raises concerns about vehicle handling and accountability. Hyundai has declined to escalate or properly address the issue and has advised that they will continue repair attempts without further resolution. Given the recurring nature of the issue and the lack of accountability, I am concerned about potential safety risks. I respectfully request that this matter be reviewed and recorded as part of any ongoing safety investigations.

NHTSA ODI 11726454

The problem first appeared after I bought my car to the dealership to replace an amplifier. Since then, my car has been there twice and they have not been able to identify the problem. I’m going back-and-forth with the dealership and hyundai corporation. after numerous incidents with my other vehicles, I no longer trust this place to repair and at this time it’s a safety issue while I’m driving. I work in a school district in [XXX] when the kids are around I need my front and back up cameras to work. it’s a safety concern for me and I need your advice. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

NHTSA ODI 11726549

While operating the vehicle, an intermittent audible warning sound occurs without any corresponding alert, message, or notification displayed on the dashboard or infotainment screen. The specific component or system causing the warning is unknown. The vehicle is available for inspection upon request. This condition puts my safety at risk because the unexplained warning sound occurs while driving and causes me to divert my attention from the road in an attempt to identify the source or meaning of the alert, creating a driver distraction. The issue has been reproduced multiple times under normal driving conditions. I demonstrated the condition to the dealership and provided video evidence; however, the issue has not been diagnosed or confirmed, and no root cause has been identified. The vehicle has been inspected by the dealership, but no explanation or resolution has been provided. The manufacturer is aware of the issue through an open case. There were no warning lamps, messages, or prior indicators associated with this condition. The audible warning occurs without any visible alert or explanation. The condition began shortly after purchase in November 2025 and was later documented and demonstrated to the dealership in January 2026.

NHTSA ODI 11726105

I am reporting a repeated brake system issue on my 2024 Hyundai Tucson involving premature rotor warping and brake failure at very low mileage. On April 30, 2025 (11,007 miles), I first noticed significant vibration and shaking when braking. On May 29, 2025, Colonial Hyundai diagnosed the issue and resurfaced the brakes under warranty (Hyundai case #40826529). The issue persisted immediately after repair, and on June 13, 2025, I was informed that both front and rear brakes and rotors needed replacement. On June 19, 2025, all brakes and rotors were replaced under warranty, resolving the issue temporarily. Less than 8 months later, on February 12, 2026 (under 10,000 additional miles), the same braking vibration returned. The original dealer attributed the issue to driving behavior. At Hyundai’s direction, I sought a second opinion on February 26, 2026 at Piazza Hyundai of West Chester. They confirmed that the brakes and rotors again required replacement and indicated this was unusual for such low mileage. On March 16, 2026, despite the dealer’s findings, Hyundai Corporate declined to cover the repair under warranty. This vehicle has now required three brake-related repairs within a short period and low mileage, including resurfacing and full rotor replacement, followed by another failure. This pattern suggests a potential defect in the braking system, materials, or related components, rather than normal wear. Component/System Failed: The failure involves the braking system, specifically repeated warping/failure of front and rear brake rotors and premature brake wear. The vehicle and components are available for inspection upon request. When braking, the vehicle experiences significant vibration and shaking in the steering wheel and chassis, which affects braking smoothness and control. This condition can reduce driver confidence, increase stopping distance, and may lead to loss of control during braking, particularly at highway speeds or in emergency stop.

NHTSA ODI 11725972