AI Damage2021 Hyundai Nexo: common problems
Owners of the 2021 Hyundai Nexo filed 2 complaints with NHTSA, most often about electrical system and fuel system. The maker issued 16 service bulletins for this year. Details by component below, with sources.
Key figures
- Owner complaints
- 2
- Technical service bulletins (TSB)
- 16
What fails most often
- 1 Electrical system 100% of all complaints
- 2 Fuel system 50% of all complaints
- 3 Engine 50% of all complaints
- 4 Forward collision avoidance 50% of all complaints
- Electrical system: 2 complaints (100% of all); manufacturer bulletins for this component: 4.
- Fuel system: 1 complaints (50% of all); manufacturer bulletins for this component: 1.
- Engine: 1 complaints (50% of all).
- Forward collision avoidance: 1 complaints (50% of all).
Engines and transmissions
US-market versions per EPA. On the right: how many NHTSA complaints name this engine or transmission type.
- petrol
- automatic, 1-speed
Drive: FWD
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 2 | 0 | 4 |
| Fuel system | 1 | 0 | 1 |
| Engine | 1 | 0 | 0 |
| Forward collision avoidance | 1 | 0 | 0 |
| Engine and cooling | 0 | 0 | 3 |
| Air bags | 0 | 0 | 2 |
| Visibility | 0 | 0 | 2 |
| Exterior lighting | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Structure | 0 | 0 | 1 |
| Tires | 0 | 0 | 1 |
What owners report
Short excerpts of NHTSA complaints in the original wording. These are owner statements not verified by NHTSA; personal data removed.
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.
I am dissappointed that it took 3 months [dealer] 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.
Comparison
By complaint count this model year ranks 1,862 of 2,102 model years in the NHTSA data (among the 11% least complained about).
On average one model year of the Nexo has 2 complaints (8 years in the data). This year has 2, below average.
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Fuel system. Fuel smell, leaks, rough running, fuel-system codes.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Forward collision avoidance. Radar and camera: calibration after bumper or windshield replacement.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- The National Highway Traffic Safety Administration (NHTSA) has identified the presence of substandard and…
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…
- The National Highway Traffic Safety Administration (NHTSA) has issued an urgent safety advisory regarding…
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…
- This bulletin provides information regarding condensation related to the accumulated moisture in the…
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…
- Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service…
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…
- Some vehicles may exhibit a loss of connectivity or interruptions in the middle of using Bluelink Service…
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…
- This bulletin contains information about the proper removal of the windshield wiper blade protective cover…
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…
- This bulletin provides important checkpoint guidelines when performing engine oil and filter change services
- This bulletin provides information on how to properly vent Hydrogen from a Nexo FCEV for maintenance or…
- 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 the PPF. These spots are the result of moisture trapped…
- Certain Nexo vehicles may experience a stack coolant warning light while driving
The logic update provides real-time current sensor deviation correction.
- During certain repairs on Nexo vehicles, it may be necessary to defuel/vent the vehicle prior to repairs…
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.
- Certain 2019-2021MY NEXO (FE) vehicles may exhibit a micro-leak in the inlet fitting valve area caused by…
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…
NHTSA lists 16 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2021 Hyundai Nexo?
Owner complaints to NHTSA most often mention: electrical system, fuel system, engine. Total complaints: 2. The most frequent symptoms in complaint texts: smoke, burning smell, fire (50%).
How many service bulletins (TSB) were issued for the 2021 Hyundai Nexo?
NHTSA lists 16 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2021 Hyundai Nexo from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2021 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.