2021 Hyundai Nexo Problems
- Complaints
- 5filed with NHTSA
- Median mileage
- —no mileage reported
- Recalls
- 2campaigns on record
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
- NHTSA crash rating
- —no overall rating published
- EPA fuel economy
- 61 mpgcombined, fuel cell FWD · 65 city / 58 hwy
Sources: NHTSA records for the 2021 Hyundai Nexo (complaints, recalls, investigations), EPA fuel economy. Report an error
NHTSA recorded 5 consumer complaints for the 2021 Hyundai Nexo. The part named most often is fuel system, with 4 complaints (80% of the total), followed by electrical system (2) and engine (2). NHTSA lists 2 recall campaigns and 16 technical service bulletins for this model year. Fuel system complaints overlap with 2 recall campaigns covering the pressure relief devices and 1 technical service bulletin filed under the same part. Electrical system complaints overlap with 1 recall campaign covering the fuel cell and 4 technical service bulletins filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Fuel system4 80%
- Electrical system2 40%
- Engine2 40%
Example complaints
Fuel 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. …”
NHTSA complaint #11584235, filed 2024-04Electrical 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. …”
NHTSA complaint #11473991, filed 2022-07Complaints by year filed
Fewer than 15 complaints, too few for a reliable trend.
Fuel economy and running cost
EPA ratings for each 2021 Hyundai Nexo version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Nexo FWD | fuel cell | single-speed | 59 | 54 | 57 | — |
| Nexo Blue FWD | fuel cell | single-speed | 65 | 58 | 61 | — |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
- Fuel system, other › Storage › Tank assembly › Pressure relief devicesCovers: Hyundai Nexo 2019–2024
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.
- Electrical system › Propulsion system › Fuel cellCovers: Hyundai Nexo 2019–2021
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.
Recall details for the 2021 Hyundai Nexo → · Check a VIN at nhtsa.gov/recalls
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 16 on record; the latest 10 are shown.
- 11032523Apr 10, 2026Air bags. 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…
- 11032522Apr 10, 2026Air bags. 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…
- 11025476Nov 6, 2025Exterior lighting. 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…
- 11018575May 8, 2025Electrical system. 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…
- 11017111Apr 7, 2025Electrical system. 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…
- 11015936Mar 18, 2025Electrical system. 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…
- 10251285Feb 14, 2024Visibility (wipers, defrost, mirrors). 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…
- 10247189Oct 13, 2023Engine cooling. This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
- 10241825Aug 16, 2023Electrical system. This bulletin provides information on how to properly vent Hydrogen from a Nexo FCEV for maintenance or repairs.
- 10235566Apr 24, 2023Body and structure. 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…
Other model years of the Hyundai Nexo
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2023 | 6 | — | 1 | — | 61 | — | Too new |
| 2021 | 5 | — | 2 | — | 61 | — | Not enough data |
| 2020 | 7 | 7,438 | 4 | — | 61 | — | Not enough data |
Frequently asked questions
How many NHTSA complaints does the 2021 Hyundai Nexo have?
NHTSA recorded 5 consumer complaints for the 2021 Hyundai Nexo as of Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2021 Hyundai Nexo is reported most often?
Fuel system is named most often, in 4 complaints (80% of the total), followed by electrical system with 2.
Has the 2021 Hyundai Nexo been recalled?
NHTSA lists 2 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
What gas mileage does the 2021 Hyundai Nexo get?
The EPA rates the 2021 Hyundai Nexo (Nexo Blue, fuel cell) at 61 mpg combined, 65 city and 58 highway. Other engine and drive versions are rated differently.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.