Most common 2021 Hyundai Nexo problems
Share of the 5 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Hyundai Nexo complaints by model year
2021 Hyundai Nexo recalls (2)
Fuel/propulsion system
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.
Remedy: Owners are advised to park outside and away from structures until the recall remedy is completed. Dealers will replace the TPRD, free of charge.
Electrical system › Propulsion system › Fuel cell
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.
Remedy: Owners are advised to park their vehicles outside and away from structures until the recall remedy is completed. Dealers will replace the hydrogen gas detection sensors, free of charge.
What 2021 Hyundai Nexo owners say
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. …
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. …
2021 Hyundai Nexo engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| Single-speed | FWD | 65 / 58 / 61 |
EPA ratings. Class: Small SUV.
Frequently asked questions
Is the 2021 Hyundai Nexo a good car?
Based on 5 owner complaints filed with NHTSA, the 2021 Nexo rates average: about as many complaints as a typical year of the Nexo at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2021 Hyundai Nexo?
The fuel & propulsion system — 4 complaints, 80% of all complaints for this model year. Next are the electrical system (2) and engine & cooling (2).
How many recalls does the 2021 Hyundai Nexo have?
There are 2 recalls for the 2021 Hyundai Nexo, the most recent from October 11, 2024 (fuel/propulsion system). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.