Owners have reported 8 crashes, 1 fire and 2 injuries to NHTSA for the 2023 Hyundai Ioniq 5. These are unverified owner reports, not confirmed defect rates.
Owner complaints176
ELECTRICAL SYSTEM
Owners report frequent failures of the Integrated Charging Control Unit (ICCU) in the 2023 Hyundai Ioniq-5, with symptoms including "turtle mode" activation, inability to charge, and complete vehicle inoperability. Complaints often describe warning messages to "check electrical system" and subsequent limping to a safe location, with some noting loud popping sounds associated with the issue. These failures typically occur within the first two years of ownership, and parts are frequently on backorder, leading to extended wait times for repairs. Safety implications are significant, as one report involves a crash, and another mentions a fire, with several owners describing being stranded in potentially dangerous situations. Buyers should be aware of the recurring ICCU failures and the potential for extended downtime due to part availability.
Severity signals: 1 crash, 1 fire, 0 injury reports
Owner complaints57
POWER TRAIN
Owners report that the 2023 Hyundai Ioniq-5 frequently experiences failures related to the Integrated Charging Control Unit (ICCU), leading to sudden loss of propulsion power. Complaints commonly describe symptoms such as "Check Electrical System" warnings, the vehicle entering "limp mode," and complete immobility, often requiring towing. These issues are noted to occur without prior warning and have been associated with backordered parts, leaving vehicles inoperable for extended periods. Safety implications are significant, as some reports detail loss of power at highway speeds, creating a risk of crashes and stranding in traffic. Buyers should be aware that multiple owners have experienced repeated ICCU failures, sometimes even after recall repairs, indicating a potential ongoing reliability concern.
Severity signals: 1 crash, 0 fire, 0 injury reports
Owner complaints19
UNKNOWN OR OTHER
Owners of the 2023 Hyundai Ioniq 5 frequently report issues with the ICCU unit, leading to the car becoming completely inoperative. Symptoms include the vehicle failing to start, sudden power loss while driving, and the inability to shift gears. These incidents often occur even after recall repairs, with some owners indicating the car was rendered unusable for extended periods. Additionally, complaints highlight problems with the charging system, such as the charger not recognizing the vehicle or charging interruptions, and navigation system malfunctions that mislead drivers or trigger unexpected braking. Safety implications are noted, particularly in scenarios where power loss occurs on highways or when unexpected braking could lead to rear-end collisions. These issues are reported at varying mileages, and some owners express concern over the vehicle's reliability and safety during regular use.
Owner complaints8
VEHICLE SPEED CONTROL
Owners of the 2023 Hyundai Ioniq 5 frequently report issues related to the vehicle speed control, with several complaints highlighting unintended acceleration and deceleration. Symptoms include sudden and rapid acceleration when parking, as described in two crash incidents, and unexpected speed fluctuations on the highway where the car loses power and then jerks forward. These issues often occur after approximately 50 miles of highway driving or during specific maneuvers like parking. Safety implications are significant, with reports of crashes and loss of control, particularly when unintended acceleration occurs in parking situations. Potential buyers should be aware of these patterns, especially concerning the Auto Hold function, regenerative braking, and driver-assistance systems that may contribute to these experiences.
Severity signals: 2 crash, 0 fire, 0 injury reports
Owner complaints7
SERVICE BRAKES
Owners report that the 2023 Hyundai Ioniq-5 frequently experiences issues with brake lights not activating during regenerative braking, particularly in I-Pedal and Level 3 modes. Complaints commonly describe scenarios where deceleration occurs without brake lights illuminating, potentially leading to near-collisions as other drivers are unaware the vehicle is slowing down. Two complaints involve crashes where the I-Pedal mode did not stop the car as expected, and the brake pedal failed to engage effectively, resulting in a collision with an electrical pole. The incidents highlight safety implications, especially when regenerative braking is used without clear indication to following drivers. These reports primarily emerge from vehicles equipped with the I-Pedal feature, which was installed via a software update in August 2023.
Severity signals: 2 crash, 0 fire, 0 injury reports
Owner complaints6
FORWARD COLLISION AVOIDANCE
Owners report several issues with the 2023 Hyundai Ioniq 5's forward collision avoidance and cruise control systems. Commonly noted problems include the cruise control not disengaging properly when the brake is applied, leading to unintended acceleration, and the system misreading speed limits, resulting in incorrect speed settings. Multiple owners describe sensor errors and misalignment, causing the cruise control to malfunction or become unusable. Complaints frequently mention failures of the automatic emergency braking system to activate in potential collision scenarios. These issues are reported at various mileages, with some occurring as early as 15,000 miles. Safety implications include sudden deceleration in traffic, unintended acceleration, and potential collision risks, which may concern prospective buyers.
Owner complaints6
FUEL/PROPULSION SYSTEM
Owners report that the 2023 Hyundai Ioniq-5 experiences issues related to the Integrated Charging Control Unit (ICCU), with multiple complaints highlighting the vehicle suddenly entering "limp mode," limiting speed to 25 mph. This issue often follows a warning to check the power system and is sometimes associated with a discharged 12-volt battery. Several owners describe ICCU failures occurring even after recall repairs, with some vehicles remaining unrepaired for extended periods due to part unavailability. Additionally, there are reports of the charging port overheating, leading to thermal throttling, and these problems persist despite software updates. Safety implications include limited vehicle speed, which owners find unsafe, particularly when the vehicle becomes unusable during operation.
Owner complaints6
TIRES
Owners of the 2023 Hyundai Ioniq-5 frequently report issues with the sound-deadening foam inside the tires, specifically Michelin 235/55/R19 models. Complaints commonly describe the foam detaching and clumping inside the tire, leading to severe vibrations and steering wheel shaking, particularly at speeds over 45 mph. These issues typically emerge between 6,400 and 16,000 miles. Multiple owners note the inability to drive safely at highway speeds due to the imbalance, which poses a potential safety risk. Despite numerous service visits, owners often find solutions only through tire replacement or foam removal, as there appears to be limited guidance from manufacturers or dealerships.
Owner complaints5
EXTERIOR LIGHTING
Owners report that the 2023 Hyundai Ioniq 5 exhibits issues with brake light activation during regenerative braking, particularly in one pedal driving or "iPedal" mode. Complaints frequently mention that the brake lights do not illuminate unless the accelerator pedal is fully released, even when the vehicle is decelerating rapidly. This behavior is common across various regenerative braking levels and can lead to situations where following drivers are not alerted to the vehicle's slowing, posing a potential safety risk. Multiple owners describe altering their driving habits due to this issue, although no specific mileage range is associated with the complaints. This information may be important for potential buyers to consider, especially if they plan to utilize the vehicle's regenerative braking features extensively.
Owner complaints4
STEERING
Owners of the 2023 Hyundai Ioniq-5 report issues primarily related to steering and control, with symptoms including uncontrollable shaking and vibrations at speeds over 40 mph, and steering wheel vibrations increasing with speed, particularly above 55 mph. These issues are noted at varying mileages, with one report at 10,800 miles. Complaints also describe electrical system warnings and auxiliary battery charging problems, which can result in the vehicle being undrivable and requiring towing. Safety implications include potential loss of control due to severe shaking and vibrations, as well as the risk of power and control loss at highway speeds. Used car buyers should be aware of these reported issues, especially considering the potential for unexpected downtime and repair delays.
