BatteryHigh
Traction battery health variation, particularly on ex-private-hire cars
- Typically appears
- Any
- What to inspect
- Run a state-of-health check and review charging history
2016–2022 Hyundai Ioniq · common problems & known faults
Hybrid, plug-in and electric versions of an efficient hatchback, popular with private hire and high-mileage commuters.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2016–2022 Hyundai Ioniq are Traction battery health variation, particularly on ex-private-hire cars, Dual-clutch hesitation and judder on hybrid models and Rear disc corrosion from regenerative braking. 1 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.
7.3/ 10
- Critical
- 0
- High
- 1
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Hyundai Ioniq 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
TransmissionMedium
Dual-clutch hesitation and judder on hybrid models
- Typically appears
- 70,000+ miles
- What to inspect
- Drive in slow traffic from cold
BrakesMedium
Rear disc corrosion from regenerative braking
- Typically appears
- Age-related
- What to inspect
- Inspect the rear discs carefully
ElectricalMedium
12V battery faults causing multiple warning lights
- Typically appears
- Age-related
- What to inspect
- Test the 12V battery before diagnosing anything else
Inspecting a Hyundai Ioniq?
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Check this exact carFrequently asked questions
Are ex-taxi Ioniqs a problem?
Not mechanically, but the interior needs work and the battery needs a documented health check.
Which version is easiest to sell?
The self-charging hybrid. It suits buyers who cannot charge at home.
Does the warranty transfer?
Hyundai's warranty transfers with the car when servicing is up to date, which is a strong selling point.
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.