IsItAGoodCar

2021–2023 Hyundai Ioniq 5

Browse our directory of 2021–2023 Hyundai Ioniq 5 vehicles. Access instant MOT history reports, tax status, and reliability insights for any registration listed below.

Registration Directory

Common Problems & Reliability

1
Serious
2
Moderate
0
Minor

The 2021–2023 Hyundai Ioniq 5 has 3 known issues. 1 of these are classified as serious faults that could be expensive to repair. 2 are moderate concerns worth inspecting before purchase.

ICCU Failure (Integrated Charging Control Unit)

Serious

The ICCU handles 12V charging from the high-voltage battery. Internal MOSFETs can fail due to overvoltage spikes, often blowing an internal 40A fuse and causing a total loss of 12V replenishment while driving.

Symptoms: "Check electric vehicle system" warning, Audible "pop" followed by "Stop vehicle and check power supply"...

Est. repair cost: £0 (Recall/Warranty)

12V Battery Logic & "Orange Light" Confusion

Moderate

The amber dashboard light indicates 12V charging. Logic bugs in early software would stop 12V maintenance if the HV battery dropped below 20%, leading to "bricked" cars even if the HV battery had plenty of charge for systems.

Symptoms: 12V battery flat despite HV battery being at 20-30%, Car fails to enter "Ready" mode

Est. repair cost: £0 (Software update)

Steering Column Knock/Clunk

Moderate

A known issue where a bearing in the steering column or a friction point in the roll connector causes a knock or clicking sound when turning.

Symptoms: Clunk felt through wheel at low speed, Clicking when rotating steering wheel

Est. repair cost: £0 (Warranty)

View detailed Hyundai Ioniq 5 fault guide

Buying Tips for the 2021–2023 Hyundai Ioniq 5

  • ✓CRITICAL: Verify Recall 272 (ICCU) has been performed; this includes a software update and potential ICCU/fuse replacement.
  • ✓Check for the "Stop vehicle and check power supply" warning history, as this indicates a near-total 12V depletion.
  • ✓Listen for a "clunk" or "knock" through the steering wheel at low speeds or when parking.
  • ✓Ask if third-party apps (e.g., Optiwatt) have been used, as these can trigger 12V drain by repeatedly waking the car.

Check Any Vehicle

Don't see your specific car listed? Enter any UK registration number for an instant vehicle history check — including MOT history, tax status, finance check, and write-off data.

Free Vehicle Check