2023 Hyundai IONIQ 5 problems and owner complaints
Explore the records behind recurring owner reports.
Key facts
386 owner complaints analyzed
4 distinct recall campaigns
15,500 mi median reported failure mileage
Scope: 2023 model year. Data snapshot: . 10 complaints include usable failure mileage.
Most common problems
Electrical System is the most frequently named component, appearing in 271 of 386 complaints (70.2%). A complaint can name multiple components.
| Topic | Matching reports | Share of complaints |
|---|---|---|
| Electrical and battery issues | 162 | 42.0% |
| Braking behavior | 40 | 10.4% |
| Engine operation | 21 | 5.4% |
| Steering behavior | 18 | 4.7% |
| Transmission and shifting | 6 | 1.6% |
Topic matches use published keyword rules. They describe mentions, including negations or comparisons, and do not confirm a diagnosis. Read the matching rules.
Component breakdown
Number of unique complaints naming each component. Top eight shown.
| Category | Count |
|---|---|
| Electrical System | 271 |
| Power Train | 72 |
| Fuel/Propulsion System | 67 |
| Unknown Or Other | 44 |
| Engine | 37 |
| Service Brakes | 23 |
| Vehicle Speed Control | 17 |
| Forward Collision Avoidance: Adaptive Cruise Control | 11 |
Electrical System: 271; Power Train: 72; Fuel/Propulsion System: 67; Unknown Or Other: 44; Engine: 37; Service Brakes: 23; Vehicle Speed Control: 17; Forward Collision Avoidance: Adaptive Cruise Control: 11
Reported problems by failure mileage
Complaint counts in mileage bands. These are not failure rates per vehicle or mile.
| Category | Count |
|---|---|
| Under 25,000 | 7 |
| 25,000 to 49,999 | 2 |
| 50,000 to 74,999 | 1 |
| 75,000 to 99,999 | 0 |
| 100,000 to 149,999 | 0 |
| 150,000 and above | 0 |
Under 25,000: 7; 25,000 to 49,999: 2; 50,000 to 74,999: 1; 75,000 to 99,999: 0; 100,000 to 149,999: 0; 150,000 and above: 0
Under 25,000 miles has the most reports with usable mileage (7). 376 complaints have missing, zero or invalid mileage.
Complaints over time
Year the complaint was filed, not the vehicle model year or incident year. The snapshot year is partial.
| Category | Count |
|---|---|
| 2023 | 76 |
| 2024 | 70 |
| 2025 | 117 |
| 2026 | 123 |
2023: 76; 2024: 70; 2025: 117; 2026: 123
Pattern summary
Electrical System leads the component reports. Electrical and battery issues appears in 162 complaint narratives. Braking behavior appears in 40 complaint narratives. Engine operation appears in 21 complaint narratives. Use these patterns to inspect individual reports and prepare questions for a mechanic.
Calculated from recorded counts. An AI narrative has not been published for this selection.
Complaint evidence
Examples provide context, not a representative sample or a verified diagnosis.
Owner report 11523114 · 2023-05-21 (May 21, 2023)
12V battery does not seem to be charging. After 2 days of not being driven, 12v battery status is too low to start the car. Jump starting works but same think occurs after couple of days of not driven.
Owner-reported narrative. Look up ODI 11523114 at NHTSA ↗
Owner report 11524572 · 2023-05-31 (May 31, 2023)
12v battery died within 6 days and needed to be jumped. Another 4 days and the 12v will not hold a charge at all. This is a new 2023 Ioniq 5 Limited AWD. Odo on the lot was 13 miles. Odo at 10 days was around 280. Waiting to hear from Hyundai, but dealer confirmed 12v is bad. Currently unknown if ICCU is also faulty.
Owner-reported narrative. Look up ODI 11524572 at NHTSA ↗
Owner report 11509945 · 2023-03-02 (March 2, 2023)
While driving in the one pedal driving mode (“iPedal”), it is possible to rapidly slow the vehicle while keeping the accelerator pedal slightly depressed, which is the expected result for this regenerative braking mode. While rapidly decelerating in this mode, however, the brake lights do not illuminate while the accelerator pedal is slightly depressed. Even though regenerative braking is active and the car is rapidly decelerating, there is no brake light illumination. The brake lights only turn on if the accelerator pedal is not pressed at al…
Owner-reported narrative. Look up ODI 11509945 at NHTSA ↗
Owner report 11511276 · 2023-03-10 (March 10, 2023)
When using i-Pedal (one-pedal driving) mode in this vehicle, it can decelerate at a very fast rate but does not illuminate the brake lights unless the driver’s foot is completely off the pedal. For example, I can be driving 60mph and decelerate to ~2mph as quickly as other drivers coming to a complete stop, but my brake lights will not illuminate until my foot is **completely** removed from the pedal. This is contradictory to the way one-pedal driving works, since coming to a smooth and slow stop requires that you slowly lift off the accelera…
Owner-reported narrative. Look up ODI 11511276 at NHTSA ↗
Owner report 11531240 · 2023-07-10 (July 10, 2023)
Loss of power when accelerating, Warning lights came on and off in blinking style. After losing power to zero , it would jump accelerate hard then die again.
Owner-reported narrative. Look up ODI 11531240 at NHTSA ↗
Owner report 11539136 · 2023-08-17 (August 17, 2023)
Driving on the highway, my car will suddenly lose power momentarily and the speed drop 3-5 mph. My accelerator is unresponsive. Then the car will accelerate quickly with a jerk to accelerate to the set speed. May occur on level ground but often occurs at the bottom of a hill. I have no control during this loss of power.
Owner-reported narrative. Look up ODI 11539136 at NHTSA ↗
Owner report 11528668 · 2023-06-24 (June 24, 2023)
When starting vehicle, presents a warning message in instrument panel of "Check electric vehicle system". The stated description indicates: "This warning message is displayed when there is a problem with the electric vehicle control system. Refrain from driving when the warning message is displayed." This could be an issue with the battery system, or steering system that puts others in danger due to the unpredictable nature of the error. The Hyundai app that reports vehicle statuses does not show any error or diagnostic codes.
Owner-reported narrative. Look up ODI 11528668 at NHTSA ↗
Owner report 11550946 · 2023-10-20 (October 20, 2023)
Driving on freeway when adaptive cruise control turns off and had a sudden complete loss of acceleration, we had steering and brakes only. Sudden reduction of car speed in traffic could cause accident. Has only happened once in 20k miles. (no acceleration) Adaptive cruise control shuts off for no reason, but dealer couldn't replicate. In recent 8k trip we photographed warning on dash 17 + times after shut down. Dealer couldn't find any saved trouble codes for this. No warnings prior to any occurrence only after, dash turned off on acceleration …
Owner-reported narrative. Look up ODI 11550946 at NHTSA ↗
Owner report 11523865 · 2023-05-25 (May 25, 2023)
When using the most aggressive braking energy recovery mode in the Hyundai Ioniq 5 (i-Pedal), the brake lights do not illuminate despite the aggressive nature of the braking provided by this mode. This mode brings the car to a full and complete stop and is very similar to commanded braking via the brake pedal. When using the L1-L3 braking energy recovery modes, the deceleration experienced by the car is more or less mild enough that it would be similar to a downshift in a manual transmission car. But the brake lights only illuminate if your fo…
Owner-reported narrative. Look up ODI 11523865 at NHTSA ↗
Owner report 11576335 · 2024-03-09 (March 9, 2024)
I attempted to drive my car to work. The car started but would not shift into gear. A red battery light indicator was on in the lower left corner of the screen. I contacted my dealer and they asked me to jump my car and bring it in. I did that. They indicated that my car had experienced ICCU failure and that a part would need to be ordered. The car had already been updated to address the ICCU failure, or so I thought. This is a known issue with 2022 models.
Owner-reported narrative. Look up ODI 11576335 at NHTSA ↗