What 266 owners told NHTSA about the 2025 Hyundai Tucson Fuel Cell

engine RPMs surged and the car accelerated forward without foot on the gas pedal concerned about possible pedestrian accident or collision with objects and prop. damage. dealer was unable to duplicate the problem and no repair was made there is no warning...I never know when it will happen and it has occurred in a number of different circumstances

NHTSA ODI 11713291

Hard braking first occurred on a major highway with no prior notice that this would happen in close call accidents. The cars traffic had to veer away from me in order to avoid hitting me. Another highway (95) incident was a 18 wheel semi that had to move to the shoulder and could have easily totaled my car and me. I then researched this and found I could delay the action be setting the Forward Collision-Avoidance Assist mode to "Late". This helped in giving notice for some time, however the hard braking occurred again on a regular two lane small highway as I switched lanes, saw a car stopping suddenly and the brakes locked up. (This is the latest incident as dated below). There was no "Late" warning, the brakes just locked up. Being in fear of my and my families life I did further research and found that I could disable "brake assist" and only get warnings - which is what should be the default - BUT, this must be done each time I start the car. If my wife drives and forgets to do this each time I now fear for her life!!! This is not a simple matter. It is unconscionable and horrible this type of control over basic transportation is allowed to exist. This must be addressed and corrected! I'm all in on helping make meaningful change to this issue.

NHTSA ODI 11712915

Rear Door automatically opens randomly. This feature is configured to be disabled through the onboard settings.

NHTSA ODI 11712742

The forward collision avoidance engaged when it was unnecessary and nearly caused me to be rear ended. It doesn't slow you down, it brings your vehicle to a complete stop and leaves you stuck unable to move for a few seconds... just long enough for the person behind you to read end you. This is incredibly dangerous. I would speculate that this feature will result in many rear end wrecks and should be addressed expediently or Hyundai may risk a significant class action lawsuit.

NHTSA ODI 11712773

Horn inoperative. Vehicle sets diagnostic trouble code C2A23 indicating horn switch / clock spring failure. Multiple owners report similar failures. Horn is a safety device and failure may prevent warning other drivers. This include the airbag that might be affected since the clock spring is having an issue.

NHTSA ODI 11712805

Had just turned out onto a major road and started to accelerate. At approximately 30 mph forward collision system alerted and applied automatic emergency brakes even though the next car was several car lengths ahead of me and there was absolutely no risk of forward collision. The vehicle immediately behind me had to slam on their brakes to avoid rear ending me. Thankfully, this was coming out of school zone so their speed was not high. At regular street speeds this malfunction would have likely resulted in a crash with injury. During the time that the automatic brake system was activated I could not override. I used gas pedal but car would not accelerate until the system stopped, perhaps 2-3 seconds later. Car was purchased used within last month and had an inspection by seller then, but I am not aware of any inspection by manufacturer/ dealer.

NHTSA ODI 11712309

11/2/2025- The forward collision warning and the automatic emergency braking system engaged and brought my vehicle to a complete stop in the middle of the road when there was no imminent danger of a forward collision occurring. My vehicle was rear ended by the vehicle behind me as a result of the sudden and complete braking of my vehicle. This same incident happened a few days before this collision, but there was no vehicle behind my vehicle, so no rear end accident happened at that time. 12/1/2026- vehicle inspected at Jim Click Hyundai regarding the sudden stopping of the vehicle. Jim Click determined a fault code FRONT CAMERA BLOCKAGE. Dealer said they cleared the code and the problem should not return. On or around 12/8/2025 the 2025 Hyundai again had the front collision avoidance system randomly setting off alarms when the vehicle was driving on the freeway and other vehicles were traveling alongside the 2025 Hyundai. There was no emergency braking occurring at this time. 12/9/2025- the 2025 Hyundai returned to Jim Click Hyundai and at that time the dealer determined the front camera was showing an obstruction when none was there. They replaced the front camera with a new camera. 12/28/2025- the same problem of the front collision avoidance system and the automatic emergency braking engaged again, even though there was a new front camera installed on the vehicle. The 2025 Hyundai vehicle came to a complete stop in traffic. The vehicle ahead 2+ car lengths ahead swerved from the left lane to the right lane to avoid a box in the road. Driver of the 2025 Hyundai was applying the brakes when the 2025 Hyundai emergency braking system took over and the 2025 Hyundai came to a complete stop in traffic when there was no need for this. 1/2/26- 2025 Hyundai returned to Jim Click Hyundai and remains there while the Service dep't is driving the vehicle trying to diagnose the cause of the continued emergency braking problem.

NHTSA ODI 11712476

The emergency breaking system automatically engages whenever it feels it wants to. It has become extremely dangerous to drive the vehicle on a daily basis. I have been in contact with Hyundai, Hyundai consumed affairs and have brought the vehicle back to two dealerships to see if they can duplicate the problem. They have been incredulous thus far and still I am left with the safety issue. I feel very scared to drive the vehicle. I am not sure what to do at this point because Hyundai said if they can’t duplicate the problem then the vehicle is working as designed but is it going to take a serious accident for this to be taken seriously. It has been happening since September 2025. Thank you

NHTSA ODI 11711728

No visible speedometer as the dashboard was either blank or flashed message "No Signal". The HUD was not showing either. A vehicle unable to display the speed is inherently unsafe. This occurred with an overnight parked car. After about 20 minutes of driving, normal operation resumed.

NHTSA ODI 11711780

WHEN OPERATING WILL SCREEN GOES BLANK ABD INDICATED “LOST SIGNAL” DURING THIS TIME NO SPEED INDICATION. ON HYUNDAI FORUM THERE ARE MANY WHO ARE HAVING SAME PROBLEM.

NHTSA ODI 11711289

I started to accelerate from a full-stop to turn left at arrow onto highway ramp and car's emergency brakes came on with a real jolt - almost rear-ended by semi behind me. So scary. So dangerous. Backache, now, too.

NHTSA ODI 11710894

We have had a suspension clunk since we bought this in April 2025. Something is loose in the right rear. They have replace the right and left rear shock mount, the right rear shock and it still persists. There is a clunk or grabbing noise when the brakes are applied as it almost comes to a stop, it appears to be in the front. This has not been found, the last mechanic that looked at this said all new vehicles do this.

NHTSA ODI 11710608

The Automatic Emergency Braking system, I think it may be called (or is a part of) the Forward Collision Avoidance system by Hyundai, triggered incorrectly while on Interstate 265. My car was travelling at about 35 MPH on the off ramp when the Automatic Emergency Braking system triggered and cause my car to rapidly decelerate to a near standstill. The vehicle following behind me had to swerve into another lane to avoid hitting my car. The problem has not been reproduced or confirmed by a dealer or service center. The component has not been inspected yet, but we will be bringing it to the dealer in the near future. There were not warnings or messages that this was about to happen other than the emergency sound and light when the Automated Emergency Braking engaged. This has happened twice before on other roads and in other situations with this car.

NHTSA ODI 11710675

customer of Hyundai 4 years now. issues with the Forward Collison-Avoidance Assist (FCA) on my 2025 Tuscan, malfunctioning, aggressively breaking, fantom breaking when absolutely no imminent collision will happen, causing other drivers to come within inches of a rear crash with me, also the same fantom breaking while parallel parking. the breaking causes me to be thrown towards my windshield. made appointment with a Hyundai service they inspected on a diagnostic machine and no recommended "codes" were available after test was done, no repairs made they said my car is fine. happened again within 2 blocks of service center PLEASE HELP

NHTSA ODI 11710754

There was an accident involving this vehicle where another vehicle pulled out in front causing a collision. There was damage only to the front of the vehicle which caused several malfunctions. Prior to the impact the break assist did not operate which may have prevented the collision but when the impact happened the seat belts locked in place and the driver side window would not roll down nor would the driver side door open. This seems to be a safety hazard as if the vehicle were on fire how would the driver be able to get out? The problem was reported to the dealer, with no resolution. I do have photos of the damage that can be available upon request.

NHTSA ODI 11710464

Vehicle dash intermittently goes out. Flickers, goes dark, or shows every warning that exists on the panel. Could be unsafe as speed, gas gage, or other warnings that provide safety are going dark. Took it to dealer in Roseville, Ca. They tried to repair it, but problem began to occur again a week later. I have a video of it, but can’t show here.

NHTSA ODI 11710016

Horn stopped before odometer hit 6,000 miles, dealer was unfamiliar with problem until I googled it and found out Hyundai is having horn issues, then they were aware of problem. Took 34 days to get this issue repaired.

NHTSA ODI 11709648

The car keeps randomly dying. Completely loses power even when driving

NHTSA ODI 11709005

Issue Type: Intermittent Electronic System Failure / Critical Safety Hazard Description of Incident: A severe safety-related incident occurred while driving at night on 12/29/2025, at approximately 5:48 pm. Under fully dark winter conditions in MA, while the vehicle was in motion with the headlights set to AUTO, the following events occurred: Total System Blackout: All interior and exterior lighting systems suddenly failed simultaneously, including the digital instrument cluster, infotainment display, and backlighting for all illuminated buttons and controls. The complete failure of exterior lighting and interior displays resulted in an immediate loss of forward visibility and access to critical driving information. Duration: The blackout lasted approximately two seconds before the system appeared to reboot. Recurrence: Approximately ten seconds after the first incident, the same total blackout occurred again under identical conditions. Vehicle Status: The engine remained running throughout the incidents; however, the simultaneous loss of lighting and instrumentation created an extremely high-risk driving situation. This incident constitutes a critical safety failure. The vehicle had experienced repeated electrical system failures prior to this incident, and was previously presented to the dealer on 8/7/2025 for diagnosis and repair. The dealer was unable to determine the cause of the malfunction and failed to take appropriate corrective action to address these issues: 07/13/2025: The Auto Stop function became inactive, and the vehicle failed to accelerate properly after stopping at traffic lights, creating a hazardous driving condition. 07/14/2025: The phone failed to connect to the vehicle’s infotainment system. 07/17/2025: While reversing in a parking lot, the Parking Collision Warning system failed to detect a moving vehicle behind the car. No audible or visual warning was issued, rendering the safety feature ineffective in preventing a potential collision.

NHTSA ODI 11708682

The Driver Attention Warning is not disabled, even when doing exactly that in Settings. This is incredibly annoying and distracting and is a major reason I cannot recommend this car to others.

NHTSA ODI 11708601

The automatic brake system triggers when there is no obstacle. It has caused the car to stop suddenly in the middle of the road and almost become rear ended several times. We took it to the Hyundai service center and they said they’ve had complaints of this before but checked the system and don’t see any issues.

NHTSA ODI 11707526

This vehicle has had numerous problems since I leased it. To summarize, at times the vehicle randomly shifts out of the ECO mode, usually into the SNOW mode. The engine has also raced, hesitated, bucked, rattled and vibrated when trying to change gears. Sometimes, these actions are subtle and sometimes they are borderline violent. This happens more frequently when the engine is cold. Additionally, the AEB system has activated a number of times while in stop and go traffic, even though the vehicle in front was moving forward. On at least 3 of these occasions, i barely avoided being rear-ended by the vehicle following me. The final issue that I have noticed is a problem with the odometer. It has appeared to work normally most of the time, but I have noticed times where I didn't think the odometer accurately reflected the distance I had traveled. I was able to synch the odometer with the trip odometer on a local road that I was quite familiar with. The trip odometer registered 1.8 miles while the odometer only registered 1 mile traveled. All of these issues happened multiple times and are intermittent. I have had the vehicle to Hyundai dealers on 5 occasions, and they claim to have not been able to duplicate any of the problems that I have been consistently logging in to a "diary" that represents a list of when I have noticed these issues. I have been in constant contact with Hyundai, but they promised to send out a factory rep, then reneged, instead relying on the local service techs. Said techs had the vehicle for nearly 2 weeks, but only drove it for 16 miles (until I called AFTER a determination was made and they hurriedly drove it an additional 22 miles to give the appearance of a more complete exam), using less than a quarter tank of gas. To me, this wasn't a thorough exam and appeared to be a cover-up to avoid having to buy back the vehicle. Note: these problems have occurred on multiple occasions, therefore the date below is the lease date.

NHTSA ODI 11706893

The car in front of me, 8 to 10 feet ahead, slow down and turn on their blinker. My car slammed so hard on its break. It threw me and my dog forward. It never gave us a warning until it slammed. There was plenty of time for me to slow down, but also the car was partially already in the turn lane. There is then 223 seconds where my car will not move forward. I am a sitting duck to cars coming behind me.

NHTSA ODI 11706559

I was travelling East in the left kane on the southern state parkway in Long Island, NY. The car in fron of me stopped short. I had plenty of time to slow down, then my car brakes locked up and I was almost rearended. Fortunately the driver behind me was alert and moved to the shoulder to avoid contact.

NHTSA ODI 11706576

Multiple times the car has locked the brakes when there was a car several car lengths in front of me. This has resulted in me nearly being rear ended three different times. The force of the stop has also caused me to have neck and back pain. This is u safe and will result in injuries. There are many reports about this on Reddit.

NHTSA ODI 11706262