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Active NHTSA advisory: park outside and away from structures until repaired. Check your VIN at nhtsa.gov/recalls and see the recall details below.
Hyundai · Compact SUV

2021 Hyundai Nexo

Hydrogen fuel cell
Small Sport Utility Vehicle 2WD
2 EPA-rated configurations
Data refreshed 2026-10-26
C
Safety Signal
72 / 100 from the NHTSA recall record
Recalls2 critical 2
Complaintsnone reporting a crash, fire or injury 5
Crash ratingnot rated by NHTSA —
Fuel economybest combined, EPA 61 mpg
20262025202420232022202120202019

The 2021 Hyundai Nexo is sold in the U.S. as a hydrogen fuel cell compact SUV with 2 EPA-rated configurations. The most efficient version, the Nexo Blue, is EPA-rated at 61 mpg combined. NHTSA lists 2 recall campaigns for this model year, 2 rated critical, which gives it a Safety Signal grade of C. Owners have filed 5 complaints, most often about the fuel/propulsion system.

Hyundai NEXO — photograph via Wikimedia Commons
Hyundai NEXO · Photo: Alexander Migl · CC BY-SA 4.0 · Wikimedia Commons

Specs & fuel economy

Source: EPA fueleconomy.gov
ConfigurationPowertrainDriveEngine / motorCityHwyCombAnnual fuel*
Nexo BlueHydrogen fuel cellFWD120 kW IPMSM655861—
NexoHydrogen fuel cellFWD120 kW IPMSM595457—

*EPA estimate at 15,000 miles/year at EPA reference fuel and electricity prices. fueleconomy.gov record ids: 47541, 47540.

Emissions & certification

Source: EPA emission certificates
ConfigurationSmog ratingEmission standardWhere it can be sold newSmartWay
Nexo, Nexo Blue10 / 10Federal Tier 3 Bin 0 / California ZEVAll 50 states (federal, all altitudes); California and states following California standardsSmartWay Elite

Certified for all fifty states, so it can be registered new anywhere in the U.S.

The smog rating scores tailpipe pollutants other than greenhouse gases, 1 (worst) to 10 (best), and is comparable only within a model year. The standard is the federal bin or California tier the configuration was certified to. Both come from the EPA certificate behind the window sticker.

Specifications filed with NHTSA

Source: NHTSA vPIC

Dimensions Exterior

Body styleSport Utility Vehicle [SUV]/Multipurpose Vehicle [MPV]
GVWR classClass 1D: 5,001 - 6,000 lb (2,268 - 2,722 kg)

Fuel Economy

FuelFuel Cell

Seating

Seat rows2
Seating capacity5 seats

Transmission

Drivetrain4x2
TransmissionAutomatic
Transmission speeds1

Driver assistance

Standard: Adaptive cruise control, Anti-lock brakes, Backup camera, Blind-spot monitoring, Electronic stability control, Forward collision warning, Lane departure warning, Lane keeping assist, Parking assist, Pedestrian automatic emergency braking, Rear cross-traffic alert

Filed by the manufacturer with NHTSA under the federal vehicle-identification rule and decoded from the VIN pattern — not a manufacturer press kit, so it describes the configurations we could identify rather than every trim (seen: Blue, Limited). Figures for the trim you are looking at may differ.

Dimensions & weight

Source: Transport Canada
Length183.9 in
Width (body, without mirrors)73.2 in
Height64.6 in
Wheelbase109.8 in
Track, front63.4 in
Track, rear63.4 in
Curb weight4,059 lb

Measured by Transport Canada for its Canadian Vehicle Specifications database, which covers the North American versions of each model — here one configuration: 4-door SUV. Where a range is shown, those versions differ. Width is the body without mirrors, which is why it can read narrower than a brochure figure. Before we used it we checked it against the US manufacturer press kits we hold (27 Sep 2026): wheelbase agreed within 1% on every vehicle we could compare, length on 98%, and the curb weight fell inside the manufacturer's range on 96%. Source dataset. Contains information licensed under the Open Government Licence – Canada. Licence.

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Factory warranty running out?

The 2021 Hyundai Nexo is in the years where transmission, electronics and drivetrain repairs land on the owner. What an extended plan does and does not cover is worth reading before a dealer quotes you one.

What to check before you buy →

Affiliate disclosure: some links on this page are affiliate links. If you request a quote or buy through them we may earn a commission at no extra cost to you. Nothing on this page changes because of it.

Recalls (2)

Source: NHTSA recall database
!critical

Fuel System, Other

269
Park outside 1,545 vehicles 73% reported repaired
Problem 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. Risk A vehicle fire increases the risk of injury. Fix Owners are advised to park outside and away from structures until the recall remedy is completed. Dealers will replace the TPRD, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 8, 2024. Final owner notification letters will be mailed in phases, beginning January 6, 2025. Owners may contact Hyundai Customer Service at 800-633-5151. Hyundai's number for this recall is 269.
NHTSA campaign 24V761000 reported Oct 11, 2024 Hyundai Motor America the full filing, and every vehicle covered →
!critical

Fuel System, Other

225
Park outside 922 vehicles 91% reported repaired
Problem 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. Risk A hydrogen gas leak can increase the risk of a fire while parked or driving. Fix 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. Owner notification letters were mailed August 12, 2022. Owners may contact Hyundai customer service at 1-855-371-9460. Hyundai's number for this recall is 225.
NHTSA campaign 22V258000 reported Apr 14, 2022 Hyundai Motor America the full filing, and every vehicle covered →

These are vehicle campaigns — the ones the automaker filed against this model. NHTSA also records equipment recalls, filed by a parts maker against a component (a tyre, a child seat, an aftermarket part), and those are not listed here or counted above. nhtsa.gov/recalls shows both for a VIN.

Whether any of this applies to one specific Nexo

A campaign covers a build range, not a model year, so two identical-looking cars from 2021 can differ. Both of these check a VIN against the manufacturer’s own list, free, in about ten seconds. Hyundai publishes its own lookup because federal rule 49 CFR 573.15 requires it to, and to keep it current to within seven days.

Hear about a recall before the letter does

The manufacturer’s letter is the last step of a recall: it has up to 60 days after filing to mail owners, at the address on the registration. We email you the day NHTSA posts a recall on the 2021 Hyundai Nexo, with what to do next. Nothing else, ever — no newsletter, no marketing, one-click unsubscribe in every message.

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Parts & accessories for the 2021 Hyundai Nexo

Search by fitment on eBay Motors — OEM take-offs, aftermarket, and the trim pieces dealers no longer stock. The listing and the price are the seller's.

Find parts for this Nexo →

Owner complaints

Source: NHTSA complaint database
5complaints filed

0 involved a crash · 0 a fire · 0 injuries · 0 deaths reported

Filed per year: 2022: 3 · 2024: 2

Most-cited components

Fuel/Propulsion System 4
Electrical System 2
Engine 2
Forward Collision Avoidance 1
Power Train 1

In owners' own words

Filed with NHTSA by the people who own these cars, one per problem area. Quoted as written, with anything identifying removed.

Hydrogen fuel cell system is unstable/unreliable. Vehicle fueling infrastructure is completely unreliable and cannot be depended on for safe, ongoing operation of vehicle
Fuel/Propulsion System Jun 21, 2024 NHTSA owner report · ODI 11595838
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.
Engine Apr 20, 2024 NHTSA owner report · ODI 11584235
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.
Electrical System Jul 14, 2022 NHTSA owner report · ODI 11473991
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.
Fuel/Propulsion System Nov 20, 2022 NHTSA owner report · ODI 11494298
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.
Fuel/Propulsion System Aug 11, 2022 NHTSA owner report · ODI 11478872

Complaint counts are raw owner reports to NHTSA, not verified defects, and scale with how many were sold. Use them to spot patterns, not to rank.

Crash ratings

Source: NHTSA NCAP

NHTSA has not published 5-Star crash ratings for this model year.

Service bulletins & campaigns

Source: NHTSA manufacturer communications
Communicationsfiled with NHTSA 16
Most recentmanufacturer date 2026-04-10
Kindsas classified by NHTSA 11 service bulletins, 3 service campaigns, 2 others

Most often about: Visibility/Wiper, Engine, Electrical System, Tires, Structure.

  • 11032523 Other
    2026-04-10 · Air 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 Safety System Co., Ltd. (DTN). These inflators were not supplied, approved, or authorized by the vehicle manufacturers and have primarily been found in vehicles that previously experienced a crash and
  • 11032522 Other
    2026-04-10 · Air 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 Automobile Safety System Co., Ltd. (DTN), that have been identified in U.S. vehicles following prior crashes, theft, or non‑certified airbag replacements. These inflators are not approved for use, may
  • 25-BD-012H TSB Service bulletin
    2025-11-06 · Exterior 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 the various causes of condensation inside the lamp assembly. Lamp assembly replacement is NOT necessary in most cases. This condition can be eliminated by turning on the lamps with the engine running for
  • 25-01-024H-1 TSB Service campaign
    2025-05-08 · Electrical 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. Follow the procedure in this TSB to reestablish the connection via the AVN pinhole reset method.
  • 24-BD-001H Service bulletin
    2024-02-14 · Visibility/Wiper
  • 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 and rail spring becoming partially separated on the inner side of the wiper blade, which could lead to poor wiping performance and/or possible scratching of the windshield glass. Follo
  • 23-EM-005H Service bulletin
    2023-10-13 · Engine And Engine Cooling
  • This bulletin provides important checkpoint guidelines when performing engine oil and filter change services.
  • 23-FL-005H Service bulletin
    2023-08-16 · Electrical System
  • This bulletin provides information on how to properly vent Hydrogen from a Nexo FCEV for maintenance or repairs.
  • 23-BD-007H Service bulletin
    2023-04-24 · Structure — Body
  • 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 between the PPF and the paint.

A service bulletin is the manufacturer telling its dealers how to diagnose or repair a known condition. It is not a recall, not a finding that the vehicle is defective, and the work is not automatically free — though a bulletin is often what a dealer works from when you describe a symptom, so quoting the document number can save a diagnosis. The count is every communication filed; the list shows the most recent, one entry per campaign, because a single campaign is usually filed as several documents on the same day. The summaries are NHTSA's; the full documents come from the manufacturer.

Common questions about the 2021 Nexo

Source: EPA, NHTSA and manufacturer press kits

Does the 2021 Hyundai Nexo have any recalls?

NHTSA has posted 2 recall campaigns for the 2021 Hyundai Nexo, 2 of them rated critical. The most serious on file is 24V761000, covering Fuel System, Other. 1 of them was filed with no repair available at the time — NHTSA's file records what the manufacturer had in hand on the filing date, not what exists today. There is an active park outside advisory — act on it before driving. Check your own VIN at nhtsa.gov/recalls; a recall applies to specific build ranges, not every car.

How safe is the 2021 Hyundai Nexo?

NHTSA has not published a crash-test rating for the 2021 Hyundai Nexo yet. On the recall record WhichTrim grades it C (72/100), which measures open and severe recalls rather than crash protection.

What is the fuel economy of the 2021 Hyundai Nexo?

Across the 2 EPA-rated configurations of the 2021 Hyundai Nexo, the best EPA combined figure is 61 mpg. Figures are the EPA's own, per configuration, and every one is listed above.

What are the dimensions of the 2021 Hyundai Nexo?

Transport Canada measured it at 183.9 in long, 73.2 in wide (body, without mirrors), 64.6 in tall, on a 109.8 in wheelbase. Curb weight: 4,059 lb. Those are its measurements of the North American versions; every figure is in the table above.

What do owners complain about on the 2021 Hyundai Nexo?

Owners have filed 5 complaints with NHTSA about the 2021 Hyundai Nexo, most often about fuel/propulsion system, electrical system, engine. Complaints are unverified owner reports, so treat the pattern as a signal and the individual report as an anecdote.

How clean is the 2021 Hyundai Nexo?

The EPA smog rating for the 2021 Hyundai Nexo is 10 out of 10. That score covers tailpipe pollutants other than greenhouse gases, and it only compares vehicles within the same model year. It is certified for all fifty states, so it can be registered new anywhere in the U.S. Its configurations were certified to different standards — California ZEV, Federal Tier 3 Bin 0 — which the table above lists per configuration.

Are there service bulletins for the 2021 Hyundai Nexo?

The manufacturer has filed 16 service bulletins and related communications with NHTSA for the 2021 Hyundai Nexo, most often covering visibility/wiper, engine, electrical system. The most recent is dated 2026-04-10. A bulletin is not a recall: it is the repair procedure a manufacturer sends its dealers for a condition it knows about, and the work is not automatically paid for. It is still worth knowing — if the symptom matches, quoting the bulletin number at the service desk can save a diagnosis. The document numbers and summaries are listed above.

What we hold, and what an empty row means

Paid vehicle-history reports will not tell you the difference between “nothing happened to this car” and “we never received that record” — both of the big two say as much in their own help pages. Most of what is on this page comes from complete federal registers, so we can tell you which is which, row by row.

DataHeldSourceWhat it covers — or what empty means
Fuel economy & configurations2 configurationsEPA certification recordsEvery configuration the EPA certified for sale, with its own test figures.
Emission certificates2 configurationsEPA emission certificatesSmog rating, standard and the sales area that decides where the car can be sold new.
Recalls2NHTSA recall campaignsA complete federal register: every campaign covering this model year, with severity and advisory flags.
Owner complaints5NHTSA complaint databaseAlso complete, but unverified: these are reports owners filed, not findings. Counts scale with how many were sold.
Crash ratingsnoneNHTSA NCAPNHTSA has not tested this model year. Cars are selected for testing, so untested is not unsafe.
Service bulletins16NHTSA manufacturer communicationsEverything the manufacturer told its dealers about a defect or malfunction, short of a recall.
InvestigationsnoneNHTSA Office of Defects InvestigationNo defect investigation has been opened.
Driver-assist crash reportsnoneNHTSA Standing General Order 2021-01No report has been filed. Only entities named in the order report, and only crashes they hear of — so this is also what an unequipped car, or a manufacturer without telematics, looks like.
Specifications filed with NHTSA8 fieldsNHTSA vPIC, decoded from VIN patternsWhat the manufacturer filed under the federal VIN rule — a configuration, not the full trim ladder.
Measured dimensions7 fieldsTransport Canada, Canadian Vehicle SpecificationsLength, width, height, wheelbase, track and curb weight, measured on the North American versions.
Trims, pricing & equipmentnoneManufacturer press kitWe have not transcribed a press kit for this model year yet. This is our gap, not the manufacturer's — the one row here where an empty cell means we are behind.

Rebuilt nightly; this page was generated 2026-10-26. Every figure above is traceable to the source named beside it, and the JSON for this page carries the same values with their identifiers.

Sources & method

Safety Signal starts every model-year at 100 and subtracts points per open NHTSA recall campaign by severity: critical 15 (fire risk, park-outside or do-not-drive advisories), high 8 (brakes, steering, airbags, loss of drive power, structure, battery), moderate 6, minor 3 (software, labels, lighting fixed by an update). The most serious recall counts in full and each further one counts 85% of the one before, because a vehicle sold in millions is recalled more often than a rare one without being more dangerous — and because a flat subtraction bottomed the scale out, scoring a vehicle with 22 recalls within a point of one with six. A ≥ 90, B ≥ 80, C ≥ 70, D ≥ 60, otherwise F. Read it as what it counts: recall campaigns on the federal record, weighted by severity. The damping reduces the sales bias by roughly 40% but does not remove it: like our complaint counts, this is not normalized by how many were sold, so a best-seller still scores somewhat worse than an obscure model with the same real risk. NHTSA crash ratings, do-not-drive and park-outside advisories, and the crash, fire, injury and death counts in owner complaints are reported separately on every page and never blended into the letter — a vehicle can hold five stars and a poor letter at once, and where that happens we say so rather than leave you to notice. Because the scale subtracts from a clean sheet, a model year too new to have been recalled, complained about or bulletined scores full marks on an empty record; we label those grades provisional rather than present them as earned.

EPA figures come from fueleconomy.gov vehicle records. Recalls, complaints, investigations and crash ratings come from NHTSA's public flat files, refreshed nightly.

JSON for this page · API