HYUNDAI NEXO · model year

2021 HYUNDAI NEXO

10 NHTSA complaints, and 2 active recalls for this specific cohort.

NHTSA overall rating

Not crash-tested

New Car Assessment Program

The 2021HYUNDAINEXO carries 10 consumer safety complaints in NHTSA's Office of Defects Investigation database for this specific model-year cohort. Within that volume, owners reported 0 crashes, 0 fires, 0 injuries, and 0 fatalities. For crash performance, NHTSA's New Car Assessment Program gave this cohort an overall Not Rated/5 rating, with Not Rated/5 front crash, Not Rated/5 side crash, and Not Rated/5 rollover scores derived from standardized barrier and dynamic tests.

Component-level analysis is where model-year complaints become actionable: the top complaint category for the 2021 NEXO is fuel/propulsion system with 3 filings, followed by electrical system (2) and engine (2). Concentration in one or two component groups is the classic signature of a systemic defect; a flat distribution usually reflects normal aging, warranty complaints, or isolated build-plant variability. This model year has 2 active recall campaigns, which means the manufacturer is obligated to remedy the covered defect at no charge for the life of the vehicle — the full NHTSA campaign numbers are listed below.

NHTSA currently has 37 investigation files overlapping the 2021 NEXO, and 1 remain open. Owners comparing this cohort against neighboring years should pair the counters above with the complaint-by-year trend on the parent model page — a spike in a single year often tracks to a platform refresh, a new transmission supplier, or an updated ECU calibration. Use the related-complaint feed below to read raw owner narratives before deciding whether any pattern here affects your specific use case.

10
Complaints
0
Crashes
0
Fires
0
Injuries
0
Deaths

Total Complaints

10 filings

Crashes Reported

0 reports

Source

NHTSA ODI

Federal complaints database

Complaints vs. fleet median (215)

At or below the fleet median complaint volume.

NHTSA NCAP overall: Not Rated/5 — Not rated · Front: Not Rated/5 · Side: Not Rated/5 · Rollover: Not Rated/5

Complaints by Component

ComponentCount
FUEL/PROPULSION SYSTEM3
ELECTRICAL SYSTEM2
ENGINE2
FORWARD COLLISION AVOIDANCE: AUTOMATIC EMERGENCY BRAKING1
FUEL SYSTEM, OTHER1
POWER TRAIN1

Recalls (2)

22V25800014/04/2022

FUEL SYSTEM, OTHER:DELIVERY

Hyundai Motor America (Hyundai) is recalling certain 2019-2021 Nexo vehicles. The hydrogen gas detection sensors may fail to detect leaks in the hydrogen gas delivery system.

24V76100011/10/2024

FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES

Hyundai Motor America (Hyundai) is recalling certain 2019-2024 Nexo vehicles. The thermally activated pressure relief device (TPRD) may break and cause a hydrogen gas leak, which can result in a fire while parked.

Recent Complaints

20240621FUEL/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.

20240420ENGINE

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.

20240420FUEL/PROPULSION SYSTEM

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.

20240420POWER 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.

20221120FUEL/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 an

20220811FUEL 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.

20220811ELECTRICAL SYSTEM

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.

20220714ELECTRICAL SYSTEM

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.

20220714ENGINE

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.

20220714FORWARD COLLISION AVOIDANCE: 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.

Compare 2021HYUNDAINEXO to Similar Vehicles

NHTSA Investigations 1 Open

View all investigations

Frequently Asked Questions

How many complaints does the 2021 HYUNDAI NEXO have?
The 2021 HYUNDAI NEXO has 10 NHTSA complaints, 0 crashes, 0 fires, 0 injuries, and 0 deaths reported.
What is the safety rating for the 2021 HYUNDAI NEXO?
The 2021 HYUNDAI NEXO received an overall NHTSA safety rating of Not Rated/5, front crash rating of Not Rated/5, side crash rating of Not Rated/5, and rollover rating of Not Rated/5.
Are there any recalls for the 2021 HYUNDAI NEXO?
Yes, the 2021 HYUNDAI NEXO has 2 recall(s). The most common affected component is FUEL SYSTEM, OTHER:DELIVERY. Recalls are issued by NHTSA and manufacturers must provide a free remedy.
What are the most common problems with the 2021 HYUNDAI NEXO?
The most-complained component for the 2021 HYUNDAI NEXO is FUEL/PROPULSION SYSTEM with 3 complaints. Other frequently reported areas include ELECTRICAL SYSTEM and ENGINE.
Is the 2021 HYUNDAI NEXO safe to buy?
Review the complaint history, crash and fire reports, safety ratings, and recall status on this page to make an informed decision. The 2021 HYUNDAI NEXO has an NHTSA safety rating of Not Rated/5. Compare with other model years using the links above.
Where does this data come from?
All complaint, recall, and safety rating data is sourced from the National Highway Traffic Safety Administration (NHTSA). Complaints are filed by vehicle owners through NHTSA's Office of Defects Investigation.

Vehicle Safety Guides

Data as of 2025. Sources: NHTSA Office of Defects Investigation (ODI) complaints database, NHTSA recall campaign API, NHTSA NCAP crash-test ratings, and NHTSA FARS for fatality cross-reference.