Owners have filed 10 complaints
about the 2021 Hyundai Nexo with NHTSA between 2022 and 2024.
The largest single group is the fuel & propulsion.
Across this model's run it ranks 3 of 3 worst.
The letter says how bad. This says what kind — whether this year drew
an unusual number of complaints, unusually dangerous
ones, or failures that arrived unusually early.
The dashed ring is 50 — the national norm. Further out is worse.
Complaint volume — 43
Against the median year of the Hyundai Nexo. 50 means typical for this
model; 100 means roughly double.
Severity — 0
0% of these complaints
involved a crash, fire, injury or death, against a national rate of
9.7%.
Early failure — not reported
Too few complaints recorded a mileage to measure this.
Complaints filed with NHTSA, by model year. Bar colour is the FaultScore grade:
A
B
C
D
F
ungraded
What breaks on a 2021 Hyundai Nexo
Every complaint is filed against a part. Follow any row for the complaints about that part alone.
Fuel & Propulsion
440.0%
Electrical System
220.0%
Engine & Cooling
220.0%
Driver Assist & Collision Avoidance
110.0%
Transmission & Drivetrain
110.0%
When owners complained
A spike years after the car went on sale usually means a part wearing
out on schedule across the whole fleet — the kind of pattern no single
owner can see from inside their own car.
Jul 2022peak 3Jun 2024
Recalls on the 2021 Hyundai Nexo
A complaint is one owner's allegation. A recall is the point at which
the manufacturer or a regulator agreed the defect is real and dangerous
enough to fix for free — however old the car is.
Canada — Transport Canada
Canada runs its own recall programme, and its campaigns do not
always mirror the American ones.
Recall 202460323 units in Canada
Fuel System
Issue: On certain vehicles, the safety valve for the hydrogen fuel system may not have been manufactured properly. As a result, the valve could fail and cause a hydrogen fuel leak. Safety Risk: A hydrogen fuel leak can create the risk of a fire, even while the vehicle is parked and turned off. Corrective Action: To reduce the safety risk, Hyundai advises that you should park your vehicle outdoors and away from other vehicles or structures until the recall repairs have been completed. Hyundai will notify owners by mail and advise you to take your vehicle to a dealership to replace the safety valve.
Recall 2024552824,695 units in Canada
Label
Issue: On certain vehicles, the compliance label may be missing information in French. The words listed on the label for "Tires", "Rims", "Front" and "Rear" appear in English only, when they should be listed as "Tires/Pneus", "Rims/Jantes", "Front/Avant" and "Rear/Arriere". Canadian regulations require this information to be listed on the label in both English and French. Safety Risk: These small errors do not affect vehicle safety. Corrective Actions: This is not a recall. The company has corrected the compliance label for all new vehicles.
Recall 202219214 units in Canada
Fuel System
Issue: Over time, the sensors to detect a hydrogen gas leak may degrade (and not work properly). If this happens, and there is a hydrogen fuel leak, the driver warning light may not turn on. Safety Risk: An undetected hydrogen fuel leak can create the risk of a fire, even while the vehicle is parked. Corrective Action: Hyundai will notify owners by mail and instruct you to take your vehicle to a dealership to replace the hydrogen gas detection sensors. Hyundai recommends that you may continue driving your vehicle, but that you should park it outside and away from structures until the recall repairs are completed.
Recall 202059310,794 units in Canada
Brakes
Issue: On certain vehicles, an abnormal sensor signal to the Integrated Electronic Brake (IEB) system could cause a sudden reduction in braking performance. If this happens, a brake warning light will turn on in the instrument cluster. Safety Risk: Reduced brake performance can cause extended stopping distances and increase the risk of a crash. Corrective Actions: Hyundai will notify owners by mail and instruct you to take your vehicle to a dealer to update the IEB system software.
In the owners' own words, exactly as filed with NHTSA.
Tracy, CA
FUEL/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 — an unverified report by a vehicle owner.
Chino Hills, CA
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 — an unverified report by a vehicle owner.
Chino Hills, CA
ENGINE
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 — an unverified report by a vehicle owner.
Chino Hills, CA
FUEL/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.
NHTSA complaint #11584235 — an unverified report by a vehicle owner.
San Francisco, CA
FUEL/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 — an unverified report by a vehicle owner.
West Hollywood, CA
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 — an unverified report by a vehicle owner.
West Hollywood, CA
ELECTRICAL 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.
NHTSA complaint #11478872 — an unverified report by a vehicle owner.
Costa Mesa, CA
ELECTRICAL 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.
NHTSA complaint #11473991 — an unverified report by a vehicle owner.
Costa Mesa, CA
ENGINE
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 — an unverified report by a vehicle owner.
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 — an unverified report by a vehicle owner.