Quick Facts — Hyundai Ioniq 5

Est. On UK Roads
30,000+
Years Made
2021–present
Common Engines
58 kWh RWD, 72.6 kWh RWD, 72.6 kWh AWD

6 Most Common Hyundai Ioniq 5 Problems

These are the faults most frequently seen on the Hyundai Ioniq 5 by UK garages — ranked by how commonly they occur and what they cost to fix.

1
Software and OTA Update Issues
Watch
Some Ioniq 5 owners have experienced issues following over-the-air software updates — ADAS malfunctions, charging speed reductions and infotainment glitches. Hyundai has issued multiple patches.
💷 Typical repair cost: £0–£300
2
800V Charging Compatibility
Watch
Early Ioniq 5 models had some compatibility issues with certain 800V ultra-rapid chargers. Software updates have resolved most of these.
💷 Typical repair cost: £0–£200
3
Heat Pump in Cold Weather
Watch
The heat pump reduces range noticeably in very cold UK winter conditions. Not a fault but a known characteristic.
💷 Typical repair cost: N/A
4
Rear Brake Squeal
Low Priority
Rear brake squeal after inactivity is commonly reported — surface rust on rear discs causes noise until the brakes clear.
💷 Typical repair cost: £0–£300
5
12V Auxiliary Battery
Low Priority
The 12V auxiliary battery can fail on older examples causing random electrical faults.
💷 Typical repair cost: £100–£220
6
Panoramic Roof Wind Noise
Low Priority
Some owners report wind noise from the panoramic sunroof seal at motorway speeds.
💷 Typical repair cost: £0–£200

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Hyundai Ioniq 5 — MOT Tips

All high-voltage system warning lights must be clear. ADAS systems including AEB and lane keeping must function correctly. Charging port must operate. 12V auxiliary battery should be verified on older examples.

Engine management light on before your MOT? It's an automatic fail. Run a Find Your Problem Now → to get the likely cause and repair cost before booking the test.

Hyundai Ioniq 5 Tyres

Most Hyundai Ioniq 5 models run 235/55 R19 or 255/45 R20 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

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Frequently Asked Questions

What is the most common problem with the Hyundai Ioniq 5?

The most frequently reported issue on the Hyundai Ioniq 5 is Software and OTA Update Issues. Some Ioniq 5 owners have experienced issues following over-the-air software updates — ADAS malfunctions, charging speed reductions and infotainment glitches. Hyundai has issued multiple patches.

How many Hyundai Ioniq 5s are on UK roads?

There are an estimated 30,000+ Hyundai Ioniq 5s currently on UK roads.

What tyres does the Hyundai Ioniq 5 use?

Most Hyundai Ioniq 5 models run 235/55 R19 or 255/45 R20 depending on trim level and year. Always check the placard inside the driver's door for the exact size for your vehicle.

Will a warning light fail my Hyundai Ioniq 5's MOT?

All high-voltage system warning lights must be clear. ADAS systems including AEB and lane keeping must function correctly. Charging port must operate. 12V auxiliary battery should be verified on older examples.

Similar Issues on Other Models

Kia EV6 — another 12v auxiliary battery case worth knowing about Nissan Ariya — another 12v auxiliary battery case worth knowing about

Summary

The Ioniq 5 is an outstanding electric car — one of the best all-round EVs on sale. Most UK examples remain under warranty. Software behaviour and charging system reliability are the main areas to monitor as the fleet ages.

If your Hyundai Ioniq 5 has a warning light on or a symptom you can't identify, a Find Your Problem Now → gives you likely fault causes, UK repair cost estimates and MOT risk — instantly.

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