ICCU / 12V charging unit (E-GMP)
usually 20,000–160,000 km · High risk
model years 2021–2023 only
Signs: 'Check EV system', loss of power, 12V battery flat (Ioniq 5 / EV6 2021–2023)
Fix: Recall / software update; replace ICCU
€0–2,000
Common faults, service intervals and costs
Hyundai Ioniq 6
2022–now
1
engines covered
2
known faults
1,659
roadworthiness tests in the statistics
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Hyundai Ioniq 6 has been built since 2022.
For this generation we cover 1 engines and 2 known faults, each with the mileage range where it usually appears.
The most expensive known risk is ICCU / 12V charging unit (E-GMP): it usually appears at 20,000–160,000 km and costs €0–2,000 to fix.
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: lights, wipers and visibility (3.7 %), tyres and wheels (1.5 %), brakes (0.1 %). It fails more often than an average car of the same age and mileage on: lights, wipers and visibility. It fails less often than average on: tyres and wheels.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| Electric (Hyundai / Kia) | Electric | None (EV) | — |
Faults by engine
Electric (Hyundai / Kia)
Reduction gear / motor noise
usually 60,000–200,000 km · Wear part
Signs: Whine or clunk
Fix: Inspect; oil change / repair
€100–1,500
Scheduled service
Intervals and typical prices for the Electric (Hyundai / Kia) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Tyre rotationWheels | every 10,000 km | €20–45 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Drive unit oil checkTransmission | every 150,000 km | €0–120 |
| Brake pads (regen-assisted)Brakes | usually at 80,000–160,000 km | €60–150 |
| Tyres (set of 4, EV-rated)Wheels | usually at 30,000–50,000 km | €450–900 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Roadworthiness tests by mileage
Share of tests in the United Kingdom (DVSA MOT, 2024) that this model failed because of each system. Bold red means more often and green less often than an average car of the same age and mileage. Sample: 1,659 tests.
| thousand km | 0–50 | 50–100 |
|---|---|---|
| Brakes | 0.1 % | 0.3 % |
| Suspension | 0.1 % | 0.2 % |
| Steering | 0.0 % | 0.2 % |
| Tyres and wheels | 1.5 % | 3.1 % |
| Lights, wipers and visibility | 3.7 % | 4.5 % |
| Body and corrosion | 0.1 % | 0.0 % |
| Exhaust, emissions and leaks | 0.0 % | 0.0 % |
Common questions
What are the known problems with the Hyundai Ioniq 6?
The faults with the highest risk: ICCU / 12V charging unit (E-GMP) (20,000–160,000 km, €0–2,000). The full list by engine is on this page.
What does the Hyundai Ioniq 6 most often fail its roadworthiness test on?
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: lights, wipers and visibility (3.7 %), tyres and wheels (1.5 %), brakes (0.1 %). It fails more often than an average car of the same age and mileage on: lights, wipers and visibility. It fails less often than average on: tyres and wheels.
What should you check when buying a used Hyundai Ioniq 6?
Before you buy, ask an authorised dealer to check by VIN whether the car has any open recalls. On the test drive, watch for these signs: 'Check EV system', loss of power, 12V battery flat (Ioniq 5 / EV6 2021–2023). The full checklist is in the guide to buying a used car.
Other generations
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Kia Niro 2016–Hyundai Kona I 2017–2023Kia EV6 2021–Hyundai Kona II 2023–Kia Soul III (e-Soul) 2019–
Other Hyundai models
Hyundai Bayon 2021–Hyundai Santa Fe V 2023–Hyundai i20 III 2020–Hyundai Tucson (NX4) 2020–Hyundai i10 III 2019–Hyundai Santa Fe IV 2018–2023Hyundai i30 (N) 2017–Hyundai i30 (PD) 2017–
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026