BatteryHigh
Traction battery health variation, particularly on ex-private-hire cars
HV battery module work£1,200–£8,000
Inspect · Run a state-of-health check and review charging history
2016–2022 Hyundai Ioniq · common fault repair costs
What the known faults on this Hyundai Ioniq typically cost to put right at a UK independent garage · use the figures to price risk before you bid, and to justify a reduction when something shows up on inspection.
Cost at a glance
- Most expensive fault
- £1,200–£8,000
- Top three risks, from
- £2,500
- Worst case, everything
- £16,650
The single priciest documented job on the 2016–2022 Hyundai Ioniq is hv battery module work at £1,200–£8,000. Few cars need every repair listed here · treat £3,430–£16,650 as the full exposure if one arrived with all of them.
Cost per fault
TransmissionMedium
Dual-clutch hesitation and judder on hybrid models
DCT clutch pack / mechatronic work£900–£3,200
Inspect · Drive in slow traffic from cold
DrivetrainHigh
Whining or clicking noise during acceleration or regenerative braking on BEV models.
Significant repair£400–£1,400
Inspect · Drive at 20-30 mph, lift off the accelerator to engage regen, and listen for a distinct whine or clicking sound from the front reduction gear.
HVACHigh
PTC heater failure resulting in no warm air blowing into the cabin when in EV mode.
Suspension refresh (per axle)£250–£1,100
Inspect · Turn on the ignition to Ready mode, set climate control to maximum heat, and check if warm air blows from the vents within 60 seconds.
BrakesMedium
Rear disc corrosion from regenerative braking
Brakes (discs, pads, caliper)£200–£800
Inspect · Inspect the rear discs carefully
ElectricalMedium
Charging cable gets stuck in the socket or vehicle refuses to initiate charge.
Water-ingress trace & seal£150–£800
Inspect · Plug in a Type 2 cable, lock and unlock the car using the key fob, and ensure the cable releases smoothly without needing the manual emergency release in the boot.
CoolingMedium
Engine management light illuminated due to active grille air flaps sticking open or closed.
Routine repair£180–£700
Inspect · Shine a torch through the lower front bumper grille to visually check if the plastic louvres are jammed with road debris or visibly broken.
ElectricalMedium
12V battery faults causing multiple warning lights
Starting & charging parts£150–£650
Inspect · Test the 12V battery before diagnosing anything else
Ranges are indicative parts-and-labour costs at a UK independent garage, inclusive of VAT. Franchised dealers typically sit 40–80% higher, and prestige or electrified variants sit at the top of each band. Always get a written quote before committing.
Inspecting a Hyundai Ioniq this week?
Build a tickable checklist for the exact car in front of you, record faults with photos, and hand the buyer a report.