ChargingHigh
ICCU failures preventing charging or 12V top-up, subject to recall action
- Typically appears
- 20,000+ miles
- What to inspect
- Check the DVSA recall service by registration and confirm the ICCU update was applied
2023 Hyundai Ioniq 6 problems
A 2023 Hyundai Ioniq 6 is now 3 years old, so an average example has covered around 40,500 miles. This is the first model year of the generation · early-build cars carry the highest share of teething faults and the most recall activity, so check the service history for completed recall work. Check the state safety inspection and service history alongside the documented faults below, which are sorted by whether a 2023 car has usually reached the mileage where they appear.
Compiled & reviewed by the VehicleFaults Research Team
Quick answer
The 2023 Hyundai Ioniq 6 is 3 years old, so an average example has covered roughly 40,500 miles. At that mileage 6 of the documented faults are already due, so check those first.
Turn these known faults into a step-by-step viewing plan for this exact Hyundai Ioniq 6 · $9.
Build the inspection planFaults a 2023 example has usually reached
Documented onset mileage is at or below the ~41k miles an average 2023 car has covered.
BatteryHigh
Drive battery state of health on high-mileage rapid-charged cars
- Typically appears
- 40,000+ miles
- What to inspect
- Run a battery health report and ask about charging habits
BrakesMedium
Rear discs corroding through light use
- Typically appears
- 30,000+ miles
- What to inspect
- Inspect for pitting and scaling
ExteriorMedium
Flush door handles fail to present or retract automatically when locking or unlocking the vehicle due to actuator failure or water ingress.
- Typically appears
- 10,000-30,000 miles
- What to inspect
- Cycle the central locking using the key fob three times. Verify all four handles deploy smoothly and retract completely flush with the door panel.
Cooling SystemMedium
Front bumper active air flaps stick open or closed due to grit ingress or motor failure, triggering an EV system dashboard warning.
- Typically appears
- 15,000-40,000 miles
- What to inspect
- Switch the vehicle on and set the climate control to maximum cooling. Observe the lower front grille to confirm the active flaps open fully without grinding noises.
ElectricalMedium
The motorised charge port door fails to open via the key fob or refuses to close securely due to a faulty internal microswitch.
- Typically appears
- 5,000-25,000 miles
- What to inspect
- Press the charge port release button on the key fob. Ensure the door powers open fully, then press the close button inside the flap to verify it shuts flush.
Faults that appear at any mileage
Age, electronics and build-related issues that are not mileage-driven.
ElectricalMedium
Infotainment and driver-assist software faults
- Typically appears
- Age-related
- What to inspect
- Confirm the software version is current and test all cameras
BodyworkLow
Low, wide body attracting kerb and underbody damage
- Typically appears
- Age-related
- What to inspect
- Inspect the front lip, sills and rims
Inspecting a 2023 Hyundai Ioniq 6?
Turn this car's known weak points into a step-by-step viewing plan · what to inspect, what a bad result means and what to ask the seller.
Build my inspection planHyundai Ioniq 6 · frequently asked questions
What is the ICCU issue?
The integrated charging control unit can fail, preventing charging; recall and update work addresses it.
Is 800V charging an advantage?
Yes, it rapid charges very quickly when the charger supports it.
What battery warranty applies?
Hyundai typically covers the high-voltage battery for eight years or 100,000 miles; confirm by VIN.
Does it sell well used?
It is a niche shape, so price realistically and lead on efficiency.
How can I tell if a specific model is fitted with a heat pump?
In the UK, a heat pump was standard on the Ultimate trim but optional on the Premium trim. To verify on the forecourt, open the bonnet and look under the front boot plastic cover. If fitted, you will see a complex array of silver air conditioning pipes and valves on the right side.
What are the manufacturer service intervals for the Ioniq 6?
The Ioniq 6 requires routine servicing every 24 months or 20,000 miles, whichever occurs first. Services are generally minor, focusing on cabin filter replacement, brake fluid testing, and comprehensive visual inspections of the high-voltage components. Always check the digital service record to ensure the manufacturer warranty remains valid.
Other Ioniq 6 model years
Buying a Hyundai Ioniq 6? Build a step-by-step viewing plan for this exact car · $9.
Build the plan