What breaks most · 2023 to 2025 model years
Hyundai Ioniq 6 problems by year
Owners have filed 128 safety complaints with NHTSA about the Hyundai Ioniq 6 across model years 2023 to 2025. Three years stand out: 2023 for electrical system complaints, 2024 for electrical system complaints and 2025 for electrical system complaints.
- Years to check closely: 2023, 2024, 2025
- Complaints on file
- 1282023 to 2025, all trims
- Worst year
- 202356 complaints
- Crashes reported
- 40 fires · 1 injuries · 0 deaths
- Typical failure mileage
- 9kMedian where owners gave mileage
- Recall campaigns
- 13Across the years shown
Complaints by model year
Raw filings with NHTSA, not adjusted for how many were sold.
| Model year | Complaints | Crashes | Recalls | Most-reported component |
|---|---|---|---|---|
| 56 | 0 | 5 | Electrical system (33) | |
| 38 | 2 | 5 | Electrical system (21) | |
| 34 | 2 | 3 | Electrical system (20) |
What fails on the 2023 Hyundai Ioniq 6
| Component | Share of complaints | Filings | Crashes | Parts for this job |
|---|---|---|---|---|
| Electrical systemAlternators, starters and ignition | 59% |
33 | 0 | Shop all electrical system parts, not filtered to this vehicle |
| Unknown or other | 16% |
9 | 0 | — |
| Powertrain and transmissionTransmission parts | 14% |
8 | 0 | Shop all powertrain and transmission parts, not filtered to this vehicle |
| EngineEngine gaskets and seals | 11% |
6 | 0 | Shop all engine parts, not filtered to this vehicle |
| Fuel systemFuel pumps and injectors | 11% |
6 | 0 | Shop all fuel system parts, not filtered to this vehicle |
| Forward collision systemRadar and camera sensors | 7% |
4 | 0 | Shop all forward collision system parts, not filtered to this vehicle |
| Speed control and throttleThrottle and pedal sensors | 5% |
3 | 0 | Shop all speed control and throttle parts, not filtered to this vehicle |
| Backup camera and sensorsCameras and park sensors | 2% |
1 | 0 | Shop all backup camera and sensors parts, not filtered to this vehicle |
One complaint can name more than one component, so shares add to more than 100%. "Unknown or other" is NHTSA's uncategorized bucket and is shown but never ranked.
In owners' words
Complaint narratives as filed with NHTSA, trimmed for length.
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The iccu failed. The car went into check power mode the. Into slow mode then died on the highway. Hard to ah e it jumped to take it to the dealership only to find out the 12v and iccu died
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ICCU failure. 5 minutes into my drive to work, the car slowed down, dashboard said electric failure and then died. It had to be towed to the dealership where it took a week to get ICCU replaced. Apparently a lot of Ioniq owners are having this problem. No warning signs, the car just dies. Car has 26,000 miles.
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The car displayed “Check Electric Vehicle Systemâ€. The 12‑V battery stopped charging. The vehicle could not be driven very far or very fast. The car had to be towed to a Hyundai dealer.The ICCU was diagnosed as failed. The ICCU has been an ongoing issue with Hyundai EVs.
How to read this page
Every figure comes from the National Highway Traffic Safety Administration's public complaint database, which holds every safety-related defect complaint filed by owners since 1995. We refresh it monthly and count each complaint once per component it names. Data through September 6, 2026.
NHTSA only accepts safety-related complaints. Rattles, paint, infotainment bugs and other annoyances are under-reported here, so this page is a map of what fails in ways owners consider dangerous, not a full reliability score.
Counts are raw. Use the year-over-year shape and the component mix, not the absolute numbers. Where a component maps to parts we stock, the row links to that category filtered to the year you are viewing. Air bag and seat belt complaints link to the recall checker instead, because those repairs are almost always covered.
Common questions
Which Hyundai Ioniq 6 years have the most problems?
By NHTSA complaint volume, 2023, 2024, 2025 carry the most filings on the Hyundai Ioniq 6. The 2023 alone has 56 complaints, led by electrical system.
What is the most common Hyundai Ioniq 6 problem?
On the 2023 model year, the most-reported component is electrical system with 33 complaints. The table above lists the top components for every year.
At what mileage do Hyundai Ioniq 6 problems start?
The median mileage at failure across all Hyundai Ioniq 6 complaints that include mileage is about 9,000 miles. Older model years skew higher; the per-year figure is in the "at a glance" card.
Are these complaints verified?
No. NHTSA publishes complaints as submitted and does not investigate individual filings. Patterns across hundreds of complaints are meaningful; a single one is not.