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Hyundai Ioniq 5Model year report

2023 Hyundai Ioniq 5 Problems

Complaints
388filed with NHTSA
Median mileage
15,500miles, 10 complaints with mileage
Recalls
4campaigns on record
Trend
Too newThis model year is less than 4 years old, so a trend is not meaningful yet.
NHTSA crash rating
5 / 5stars overall
EPA fuel economy
—not in EPA data

Sources: NHTSA records for the 2023 Hyundai Ioniq 5 (complaints, recalls, investigations), NHTSA crash tests. Report an error

What owners report

Owners of this model year most often describe electrical failures that center on the Integrated Charging Control Unit (ICCU) and the 12-volt battery: warning messages, reduced power, and in some cases a sudden loss of drive power, frequently reported after recall software updates had already been applied. A smaller but consistent group of complaints covers forward collision avoidance and cruise control behavior, vibration at highway speed, and charging problems on Level 2 equipment.

  1. Electrical system

    ICCU failure / 12-volt battery drain

    • 229 complaints (59%)
    • median 22,153 mi at 1.8 yrs old (4 state mileage, few)
    • 2 mention a crash, fire or injury
    • filed 2023–2026

    Complaints describe dashboard messages such as "check electrical system" or "stop vehicle and check power supply," sometimes preceded by a pop sound, followed by reduced speed, a dead 12-volt battery, and a vehicle that will not restart or charge. Several owners state the ICCU was diagnosed as failed and replaced by the dealer, often after a wait for a back-ordered part. Some say the failure occurred after the recall software update had been performed, while others report repeated 12-volt battery troubles the dealer could not reproduce. Reported across the sample with no tight mileage band, from a few thousand miles up to roughly 60,000 miles, and in several cases within weeks or months of a charging-related recall service.

    Recall 24V868000Recall 24V204000Recall 26V4320004 related service bulletins

    What to check: Ask whether the ICCU and its fuse have been replaced, not just reflashed, and whether any 12-volt battery work was done. Check the service history for the charging-unit warranty extension and confirm the current part is in the car.

    2 excerpts from owner complaints in NHTSA records

    “On December 23, 2025 while driving at 50 mph the car displayed an electrical warning and would not let me drive more than 40 mph. When I drove it to the dealer on December 27 (because the dealer said I had to wait until after Christmas ) it would not go over 20 mph. The vehicle has been at the dealer awaiting an ICCU part since December 27, 2025. Over 50 days!”

    NHTSA complaint #11718203, filed 2026-02

    “Code P1A9096 Iccu and fuse. The car is currently at a dealer in Barre, VT. While driving numerous warning lights appeared lowering my speed to 10 MPH immediately leaving me vulnerable to a collision in moving traffic. Warning lights include Check Vehicle Electric System , Power Limited . Issue confirmed at dealer.”

    NHTSA complaint #11660750, filed 2025-05
  2. Electrical system

    Loss of drive power / limp mode while driving

    • 109 complaints (28%)
    • median 22,000 mi at 2.6 yrs old (6 state mileage, few)
    • 1 mention a crash, fire or injury
    • filed 2023–2026

    Owners describe the vehicle dropping into a reduced-speed mode, sometimes shown as a turtle or "power limited" message, and then shutting down entirely. Many say it happened at highway or road speed with no useful advance warning and required a tow. Dealers diagnosed electrical or charging-unit faults in some cases; in others the cause was not determined or did not recur at the shop. Scattered across the sample from about 4,000 to 50,000 miles, reported both at low speed and at highway speed.

    Recall 24V868000Recall 24V2040002 related service bulletins

    What to check: Ask if the car has ever gone into reduced power or shut down, and whether the Vehicle Control Unit and ICCU software campaigns were completed. A test drive should include highway speed and a full power-up cycle.

    2 excerpts from owner complaints in NHTSA records

    “On March 20, 2025, my 2023 Hyundai Ioniq 5 displayed the error Stop check vehicle power supply and abruptly shut down during rush-hour traffic, leaving my young son and me stranded on a heavily congested bridge. Immediately, the car’s display went dark, doors wouldn't unlock, and the gear shifter was immobilized. With no emergency functions available, we were completely trapped. …”

    NHTSA complaint #11650784, filed 2025-03

    “Our 2023 Hyundai Ioniq 5 had the ICCU software update recall and subsequent complete failure of the ICCU, which was repaired. Yesterday the car again warned us of the 12v system failure and rendered it not only undrivable and unstartable, but also unlockable in the public parking area where it still sits awaiting a tow to the dealer tomorrow (they are closed on New Years Day. This is the second time the ICCU has failed, rendering the car totally inoperable and in this case stranding my wife in freezing cold.”

    NHTSA complaint #11708208, filed 2026-01
  3. Fuel system

    Charging interruptions and charge port / charging heat

    Mentioned in 6 of 60 sampled complaints

    Complaints describe Level 2 home charging that stops early, charges slower than expected, overheats and cuts off, or does not charge at all overnight, while DC fast charging still works. Some owners link this to the charging control unit; others describe missing or damaged insulation caps at the charge port. Reported from near delivery mileage up through the first several thousand miles, mostly with 240-volt home charging.

    Recall 24V868000Recall 24V2040004 related service bulletins

    What to check: Test an AC Level 2 charge session from a low state of charge and confirm it completes at normal rate, and inspect the charge port pins and insulation caps for damage.

    2 excerpts from owner complaints in NHTSA records

    “While charging my vehicle at home using a level 2 charger, the ICCU failed. When it failed, it caused a power surge and my level 2 charger “exploded.” It also caused the master breaker to trip, cutting the power off to my entire house. The vehicle no longer charges, will not drive over 25mph and has to be towed to a dealership for repair. Also, the level 2 charger is fried and no longer works.”

    NHTSA complaint #11730728, filed 2026-04

    “When AC charging my car, It quickly overheats and disables charging. I've measured the temperatures at 239°F using OBD reader. The only way to continue charging is to reduce charge amperage. If it is reduced to 32 amps the temperature seems to stabilize before reaching the 240° emergency cut off.”

    NHTSA complaint #11528304, filed 2023-06

Buying note. The recurring theme in owner reports for this model year is charging-system electronics, so the service history around the ICCU, its fuse and the 12-volt battery matters more than mileage. Confirm which recalls and software campaigns were completed and whether any hardware was actually replaced before deciding.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.

NHTSA recorded 388 consumer complaints for the 2023 Hyundai Ioniq 5. 10 of the complaints include a mileage, and 90% of those were filed for vehicles with under 50,000 miles; the median is 15,500 miles. Of all complaints, 12 involved a crash, 3 a fire, 6 an injury, 2 a death, according to the filers. NHTSA lists 4 recall campaigns and 48 technical service bulletins for this model year.

Not compared (fewer than 3 comparable model years). Model years 2008–2023 of the same vehicle that have at least 25 complaints are compared, and a model needs at least 3 of them.

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.

Also reported: Tires (6), Steering (4), Body and structure (4), Visibility (wipers, defrost, mirrors) (4), Wheels (4), Air bags (3), Back-over prevention (rear camera) (3), Suspension (3), Equipment (1), Hybrid propulsion system (1), Seats (1).

Example complaints

Electrical system: “While driving my 2023 Ioniq5 I got a warning on the dashboard about losing power and immedately the car slowed itself down to about 15 MPH, once I was able to get to a safe spot to pull over I stopped the car and it would not start again. I had it towed to the dealer and it has been a week and the ICCU is still on backorder. No idea when I will have the car back.”

NHTSA complaint #11713769, filed 2026-01

Transmission and drivetrain: “The ICCU on my Ioniq 5 failed about a year after getting the software update that supposedly addressed the issue. I am very concerned about the reliability of my car going forward as it doesn't appear Hyundai has addressed the issue and I have no reason to think the replacement ICCU component won't fail as well.”

NHTSA complaint #11725456, filed 2026-03

Fuel system: “Upon attempting to merge onto a highway, the vehicle lost acceleration and a warning message appeared on the dash stating Stop vehicle and check electrical system . Car speed was limited to 28 mph. I was able to exit and get the car to the dealership. This was on January 29th, 2025. Car was finally returned to me with a new ICCU on March 19th, 2025.”

NHTSA complaint #11649439, filed 2025-03

Other or unknown: “My horn has quit working. I don’t use it often do it could have been broken for more than 6 months, but I just discovered it following the service for a number of recalls. Apparently, this is a common problem. In 41 years of car ownership and driving, this is a first for me. My car just passed 50,000 miles last week and I’m afraid it might not be covered under warranty.”

NHTSA complaint #11646006, filed 2025-03

Mileage when problems were reported

90% of the 10 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 6,500 and 28,000 miles.

40%0–1030%10–2520%25–5010%50–750%75–1000%100–1500%150+
Share of complaints by mileage when the problem was reported, in thousands of miles (10 complaints with mileage). Red bars: under 50,000 miles. Bucket widths differ. Median: 15,500 miles.

Complaints by year filed

This model year is less than 4 years old, so a trend is not meaningful yet.

2023202420252026125
Complaints by year the complaint was filed with NHTSA. Red bars: the last 3 full calendar years used for the trend. The current year (2026) is partial.

Crash test ratings

NHTSA's 5-Star Safety Ratings for the 2023 Hyundai Ioniq 5. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.

VersionOverallFrontalSideSide poleRollover
Ioniq 5 · SUV AWD★★★★★4 / 4555 · 8.3% risk
Ioniq 5 · SUV RWDnot rated4 / 455—

Driver aids listed by NHTSA for the 2023 model year: forward collision warning standard on some versions, lane departure warning standard, automatic emergency braking standard on some versions.

Neighbouring years: 2022: same overall rating; 2024: same overall rating. A redesign between years can change both the car and the test.

Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.

Recalls and investigations

Recall details for the 2023 Hyundai Ioniq 5 → · Check a VIN at nhtsa.gov/recalls

NHTSA investigations

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. 48 on record; the latest 10 are shown.

See all 48 bulletins →

Other model years of the Hyundai Ioniq 5

YearComplaintsMedian miRecallsCrash ★MPGScore (50 = typical)Trend
2026285052—98 MPGeToo new to compareToo new
20253008,0009—106 MPGeToo new to compareToo new
202422610,12035110 MPGeToo new to compareToo new
202338815,50045—Not compared (fewer than 3 comparable model years)Too new
202240721,50035110 MPGeNot compared (fewer than 3 comparable model years)Rising

All Hyundai Ioniq 5 model years · Best and worst years by complaints

Frequently asked questions

What are the most common problems with the 2023 Hyundai Ioniq 5?

Owners of this model year most often describe electrical failures that center on the Integrated Charging Control Unit (ICCU) and the 12-volt battery: warning messages, reduced power, and in some cases a sudden loss of drive power, frequently reported after recall software updates had already been applied. The issues reported most often: ICCU failure / 12-volt battery drain; Loss of drive power / limp mode while driving; Charging interruptions and charge port / charging heat.

How many NHTSA complaints does the 2023 Hyundai Ioniq 5 have?

NHTSA recorded 388 consumer complaints for the 2023 Hyundai Ioniq 5 as of Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

What part of the 2023 Hyundai Ioniq 5 is reported most often?

Electrical system is named most often, in 273 complaints (70% of the total), followed by transmission and drivetrain with 72.

Has the 2023 Hyundai Ioniq 5 been recalled?

NHTSA lists 4 recall campaigns for this model year. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.

How did the 2023 Hyundai Ioniq 5 do in NHTSA crash tests?

NHTSA's 5-Star Safety Ratings give the 2023 Hyundai Ioniq 5 5 out of 5 stars overall. Ratings from different model years are only comparable when the vehicle was not redesigned in between.

At what mileage are problems with the 2023 Hyundai Ioniq 5 reported?

Among the 10 complaints that include a mileage, the median is 15,500 miles and the middle half falls between 6,500 and 28,000 miles; 90% were filed for vehicles with under 50,000 miles.

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 31, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program.

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.