Complaints over time
Complaints about the 2021 Hyundai Nexo peaked in 2022, with 3 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model yearPark outside
2021 Hyundai Nexo
SUV, 4x2, built in South Korea. Owner complaints on file from Jul 14, 2022 to Jun 21, 2024.
Recall campaigns covering this model year22,467 vehicles or units across those campaigns
Owner complaints5Below the median 2021 suv
Severity index0.02021 suvs average 6.1
First 24 months2Complaints in its first two years
Components
80% of complaints about the 2021 Hyundai Nexo name fuel system
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
2 recall campaigns cover the 2021 Hyundai Nexo
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 24V-761 | Oct 11, 2024 | Thermally activated pressure relief device (TPRD) may break and cause a hydrogen gas leak, which can result in a fire while parkedPark outside | Fuel system | 1,545 | Part replacement |
| 22V-258 | Apr 14, 2022 | Hydrogen gas detection sensors may fail to detect leaks in the hydrogen gas delivery systemPark outside | Electrical system | 922 | Part replacement |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2021 Hyundai Nexo
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
5 complaints on file, page 1 of 1.
- Filed Jun 21, 2024Failure Jan 23, 2022Tracy, CAFuel/propulsion system
Hydrogen fuel cell system is unstable/unreliable. Vehicle fueling infrastructure is completely unreliable and cannot be depended on for safe, ongoing operation of vehicle.
NHTSA complaint 11595838 - Filed Apr 20, 2024Failure Mar 2, 2024Chino Hills, CAEngine, Fuel/propulsion system, Power train
It has become more frequent for there to be a delay in acceleration of about 3 to 4 seconds when traveling uphill. My car lost acceleration while going uphill. As I was gradually accelerating from a red traffic light to climb a hill, my car became stuck at a certain speed, around 50 mph on April 3rd. Even when pressing the acceleration pedal to the maximum, it wouldn't accelerate. On March 2nd, while entering the freeway on an uphill section, my car suddently lost acceleration and slowed down for about 4 seconds before finally accelerating again. At the moment, a car was traveling fast in the right lane, and I narrowly avoided being hit by it. I quickly moved onto the shoulder and then returned to the right lane when it was safe. Posing serious safety concerns for both myself as the driver and any passengers in the car. My car has been towed in and is currently being investigated by technicians at the Hyundai dealer (Tustin) since 4/05/2024.
NHTSA complaint 11584235 - Filed Nov 20, 2022Failure Mar 15, 2022San Francisco, CAFuel/propulsion system
Catastrophic issue awaiting to happen. I am fearful the car can blow up. Hydrogen gas leak has been detected since March 2022. After and during the pumping, often there would be a loud hissing sound coming from the vehicle no from the pump itself. After fueling with hydrogen gas, it takes a minute for the car to read and update the tank. Then it throws loud flashing warnings on the dashboard stating the car needs to be pull over immediately. It reads “Hydrogen leak detected. Stop safely immediately. Check fuel cell system. Range limited to 2 mi. Stop safely immediately”. The use of this car is to drive my family around including to and from school. My kids are scare to be in the car. I am terrified that the car could be a bomb. People in line with the Toyota Mirai were frighten. They said I shouldn’t be driving this car. This has been happening since March 2021. Hyundai acknowledges the issue and issues recall 225. I went into service the vehicle on Sep 29 and picked it up a week later. The recall fix made the issue worst. I have opened a case with Hyundai and they are not taking this issue serious. I have asked them to escalate this issue and to stop my lease this vehicle is inoperable. Hyundai case # 20439918. Capitol Hyundai recall invoice # 298143. This vehicle is inoperable.
NHTSA complaint 11494298 - Filed Aug 11, 2022Failure Apr 24, 2022West Hollywood, CAElectrical system, Fuel system, Other
The contact owns a 2021 Hyundai Nexo. The contact received notification of NHTSA Campaign Number: 22V258000 (Fuel System, Other, Electrical System) however, the part to do the recall repair was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The dealer was made aware of the issue and confirmed that parts were not yet available. The manufacturer was made aware of the issue and confirmed that parts were not yet available. The contact had not experienced a failure. VIN tool confirms parts not available.
NHTSA complaint 11478872 - Filed Jul 14, 2022Failure Jul 5, 2022costa mesa, CAElectrical system, Engine, Automatic emergency braking
The car does not automatically brake to avoid collision. I have tested the car by going straight into a large object either another car or person in front of my car and it will not brake. In addition the hydrogen sensor is not working properly as I have already been informed of from their recall number 225 NHTSA Recall 22V-258 which I just received a few days ago. I am dissappointed that it took 3 months for Hyundai to notify me of this very serious safety issue and I am now calling the NHTSA to see what options I have to return this vehicle as I do not feel safe driving, operating, or even parking my car at my home with a hydrogen sensor that is faulty as that is a very serious fire hazard.
NHTSA complaint 11473991
Source: NHTSA ODI complaints file.
Investigations
NHTSA has not opened an investigation on this model year
Source: NHTSA ODI investigations file.
Service bulletins
16 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.
- DTN DL Apr 10, 2026 · Other
The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and dangerous driver’s-side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN). These inflators were not su… - DTN DCS Apr 10, 2026 · Other
The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding dangerous, counterfeit driver‑side airbag inflators manufactured by Jilin Province Detiannuo Automobile Safety System Co., Ltd. (DTN), that have been i… - 25-BD-012H TSB Nov 6, 2025 · Service Bulletin/Repair Instructions
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. … - 25-01-024H-1 TSB May 8, 2025 · Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connec… - 25-01-024H EM Apr 7, 2025 · Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon's communication network. If you are experiencing issues with remote commands, or o… - 25-01-024H TSB Mar 18, 2025 · Service Campaign
Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service functions. This may be due to an irregular disconnection on Verizon’s communication network. Follow the procedure in this TSB to reestablish the connec… - 24-BD-001H Feb 14, 2024 · Service Bulletin/Repair Instructions
This bulletin contains information about the proper removal of the windshield wiper blade protective cover on all models. If the protective cover is not removed correctly, there is a possibility of the rubber insert and rail spring becoming partially separa… - 23-EM-005H Oct 13, 2023 · Service Bulletin/Repair Instructions
This bulletin provides important checkpoint guidelines when performing engine oil and filter change services. - 23-FL-005H Aug 16, 2023 · Service Bulletin/Repair Instructions
This bulletin provides information on how to properly vent Hydrogen from a Nexo FCEV for maintenance or repairs. - 23-BD-007H Apr 24, 2023 · Service Bulletin/Repair Instructions
Hyundai applies a Paint Protection Film (PPF) on new vehicles before delivery to dealerships. It provides a barrier between the paint and contaminants, such as rail dust, acid rain, and industrial fallout. In rare cases, the paint can become clouded under t… - 23-BD-002H Jan 30, 2023 · Service Bulletin/Repair Instructions
This bulletin provides information regarding condensation related to the accumulated moisture in the headlamp, rear combination lamp, daytime running lamp (DRL), or fog lamp. This TSB illustrates the various causes of condensation inside the lamp assembly. … - 22-01-039H Dec 2, 2022 · Service Bulletin/Repair Instructions
Certain Nexo vehicles may experience a stack coolant warning light while driving. The logic update provides real-time current sensor deviation correction. - 22-01-039H Dec 2, 2022 · Service Bulletin/Repair Instructions
Certain Nexo vehicles may experience a stack coolant warning light while driving. The logic update provides real-time current sensor deviation correction. - 22-FL-005H Oct 20, 2022 · Service Bulletin/Repair Instructions
During certain repairs on Nexo vehicles, it may be necessary to defuel/vent the vehicle prior to repairs and then refuel the vehicle before returning it to the customer. - 22-01-081H Oct 20, 2022 · Service Bulletin/Repair Instructions
Certain 2019-2021MY NEXO (FE) vehicles may exhibit a micro-leak in the inlet fitting valve area caused by a part that is out of specification. This bulletin outlines the procedure to replace each Inlet Fitting Valve on all three storage tanks. - 22-GI-006H Jul 14, 2022 · Service Bulletin/Repair Instructions
Effective June 2, 2008, Federal Motor Vehicle Safety Standard 110 (FMVSS 110) established a threshold for correcting load carrying capacity information indicated on tire placards when vehicle weight has been increased before retail sale. This limit is t…
Source: NHTSA manufacturer communications files.