On any Ioniq 5, ask one question first: what has been done to the integrated charging control unit on this VIN? It has been the subject of service campaigns and updates, and a car with the work documented is worth meaningfully more than an identical one where nobody can say.
Which one are you looking at?
Two pack sizes, rear or all-wheel drive, and a facelift for the 2025 model year that brought a larger battery. Build date matters more than the plate year.
| Variant | Battery | What it changes |
|---|---|---|
| Standard Range RWD | ~58 kWh | Least common used. Still 800-volt — same charging system checks apply. |
| Extended Range RWD | ~73 kWh | The value pick. Confirm real usable capacity rather than the quoted range. |
| Extended Range AWD | ~73 kWh | Heavier and quicker. Tyres, brakes and suspension see more work. |
| Facelift (2025 onward) | ~84 kWh | Larger pack and running improvements. Mostly still in warranty. |
What goes wrong on an Ioniq 5
A genuinely good car with one well-known weak point and a handful of ordinary ones.
Integrated charging control unit history
The single most important check on these. The unit that manages charging and the 12-volt system has been the subject of service action, and a failure strands the car. We check the VIN against outstanding campaigns, look for evidence of work already done, and confirm the system behaves on a live charge session.
12-volt system faults
Closely related to the above, and the symptom most owners actually notice — a car that will not wake, will not charge, or throws multiple warnings at once. We test the 12-volt under load rather than reading a resting voltage and moving on.
Outstanding recall and software work
Hyundai has issued updates and campaigns across the range. They are free, but only if the car gets booked in, and private sellers frequently have not. It goes in the written report either way.
Ex-fleet and novated-lease cars
A large share of Australian Ioniq 5s went out on novated leases and are returning to the market now. Most are well maintained. Some have spent three years outdoors at high charge, and the pack reads accordingly.
Tyres, suspension and the weight
Big, heavy and torquey, on wide tyres that are not cheap to replace. Uneven inner-edge wear, tired bushes and budget replacement tyres are all common at three years old and all worth a price adjustment.
The battery on this one
Ioniq 5 packs have held up well, and the 800-volt architecture means DC charging is fast enough that many owners used it heavily — so the charge history matters more here than on a slower-charging rival. A car that lived on public DC is not disqualified, but it has aged differently to its odometer.
We read usable capacity, cell voltage spread and thermal history from the battery management system, then confirm behaviour on a live charge session. Background is in how the test works and what degradation is normal.
Buying one in Brisbane, Sydney or Melbourne
These are common on Redlands and bayside driveways — the home-charging, garage-owning demographic that suits an EV well — and they are also common in lease returns arriving in bulk. The two populations look identical in an ad and are not identical cars. Get the campaign history from Hyundai against the VIN, then let the diagnostics fill in the rest.
We inspect on site across Brisbane, Sydney, Melbourne, the Gold Coast, Ipswich, Logan and the Redlands — at a private seller's home, a dealer forecourt or a workplace car park. Report in writing inside 24 hours, then a call to walk you through it.
Questions we get about the Ioniq 5
What is the ICCU problem on the Hyundai Ioniq 5?
The integrated charging control unit manages charging and the 12-volt system, and it has been the subject of service campaigns and updates. A failure typically leaves the car unable to charge or start. Whether the work has been done on a specific vehicle can be confirmed against the VIN, and we check it as part of every inspection.
Is a used Ioniq 5 still under warranty?
Many are, given how recently they arrived here. Confirm the start date from first registration rather than the build plate, and check the distance limit on the high voltage battery cover as well as the years.
Does 800-volt charging damage the battery?
Not inherently. The architecture is designed for fast charging, and thermal management handles it. What matters is the mix — a car charged almost exclusively on public DC has worked its pack harder than one charged at home, and the history shows that clearly.
Are ex-lease Ioniq 5s worth buying?
Often yes. They usually have complete dealer service history, which makes the recall and campaign position easy to verify. The thing to check is how the car was stored and charged, which a battery read answers directly.
Great car. Check what the dealer already fixed.
Charging system history, recall status and a measured pack — before you commit.