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
2023–2026 Hyundai Ioniq 6 · common problems & known faults
An efficient electric saloon on the E-GMP platform, so the checks centre on battery health, 800V charging behaviour and the integrated charging control unit.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2023–2026 Hyundai Ioniq 6 are ICCU failures preventing charging or 12V top-up, subject to recall action, Drive battery state of health on high-mileage rapid-charged cars and Infotainment and driver-assist software faults. 2 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
Reliability snapshot
Based on the documented faults on this page for the Hyundai Ioniq 6.
6.5/ 10
- Critical
- 0
- High
- 2
- Medium
- 2
- Low
- 1
Guidance only · reflects reported patterns, not a specific car's condition.
Hyundai Ioniq 6 problems by year
Which faults an average example has usually reached depends on its age. Pick a model year for the faults that matter on that build.
Known faults to check
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
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
BrakesMedium
Rear discs corroding through light use
- Typically appears
- 30,000+ miles
- What to inspect
- Inspect for pitting and scaling
Inspecting a Hyundai Ioniq 6?
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Check this exact carFrequently 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.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.