Used buying checklist

Hyundai Ioniq reliability, common problems and used buying checks

A used Hyundai Ioniq looks better than average for reliability in UK MOT data: 8.6% of 36,972 tests failed, compared with 18.7% across all indexed models. A good example should have a clean MOT history for windscreen, wipers, and mirrors, lights and electrical, and tyres and wheels.

Sources used: DVSA MOT tests (Apr 2026); vehicle recalls (Apr 2026); MOT fault wording (May 2025). MOT data does not capture every reliability issue, especially intermittent engine, gearbox or infotainment faults that do not appear during the test.

• 8.6% MOT failure rate
• Median tested mileage 42,075 miles
• 3,169 failed MOT tests analysed

Most useful finding

Windscreen, wipers, and mirrors is the clearest area to check

Windscreen, wipers, and mirrors is the clearest named problem area in this model's MOT history (6.4 MOT notes per 100 tests). Example MOT phrases from this area include does not clear the windscreen effectively, damaged but not adversely affecting driver's view, and provides insufficient washer liquid.

Example MOT phrases to search in the car's history:

• does not clear the windscreen effectively
• damaged but not adversely affecting driver's view
• provides insufficient washer liquid
• Items removed from drivers view prior to test
• inoperative in the case of a single lamp or all lamps
• has a product on the light source so that the light output is severely reduced
• inoperative in the case of multiple lamps or light sources
• light intensity severely reduced
• Nail in tyre
• Wheel/tyre protruding beyond wheel arch

Before you view one

Focus on windscreen, wipers, and mirrors, lights and electrical, and tyres and wheels

The model's recorded failure rate is 8.6%, -10.2 percentage points compared with the average across all models. Use the seller questions below to check whether repeat MOT notes have actually been repaired.

• MOT tests analysed36,972 tests
• Median tested mileage42,075 miles
• Failed MOT tests3,169

Used buyer verdict

Should you buy a used Hyundai Ioniq?

91.4% of the MOT tests we analysed for this model passed. The model's recorded failure rate is 8.6%, -10.2 percentage points compared with the average across all models. This is a buying brief for the exact car in front of you: clean repeat history matters more than badge reputation.

Better than average in our MOT data

Green light if The car has a tidy MOT pattern, recent repairs for windscreen, wipers, and mirrors, lights and electrical, and tyres and wheels, matching tyres, and paperwork for service or recall work.

Renegotiate if The latest MOT mentions windscreen, wipers, and mirrors, lights and electrical, and tyres and wheels, consumables are due together, or the seller cannot show what was fixed after advisories.

Walk away if Dangerous defects, corrosion near structural areas, warning lights, or the same component family keep returning without clear repair evidence.

• Repeat unresolved MOT notes for windscreen, wipers, and mirrors, lights and electrical, and tyres and wheels
• windscreen, wipers, and mirrors appearing across more than one MOT
• Any dangerous MOT failure on the exact car, especially if the same area appears again later
• No paperwork showing applicable recall work has been completed
• A seller who cannot explain MOT wording such as "does not clear the windscreen effectively"

What should I check first?

Start with windscreen, wipers, and mirrors, lights and electrical, tyres and wheels, and suspension and steering. The checklist on this page explains why each area is being recommended, what to inspect, and what to ask the seller. Each item shows whether it comes from MOT results, recall notices, or a standard used-car check.

• Windscreen, wipers, and mirrors Seen in MOT results

  Windscreen, wipers, and mirrors is one of the most common MOT problem areas for this model (6.4 MOT notes per 100 tests).

  What to check: Check windscreen damage, wiper operation, washers, mirrors, and demisting.

  • Ask the seller: Have windscreen, wiper, washer, mirror, or demisting faults appeared in recent MOT history?
  • Example MOT wording: does not clear the windscreen effectively; damaged but not adversely affecting driver's view; provides insufficient washer liquid
  • Where it shows up: seen across most mileage ranges
• Lights and electrical Seen in MOT results

  Lights and electrical is one of the most common MOT problem areas for this model (1.9 MOT notes per 100 tests).

  What to check: Check every lamp, warning light, horn, battery condition, and dashboard messages.

  • Ask the seller: Have any lighting, warning-light, horn, battery, or electrical MOT notes come back more than once?
  • Example MOT wording: inoperative in the case of a single lamp or all lamps; has a product on the light source so that the light output is severely reduced; inoperative in the case of multiple lamps or light sources
  • Where it shows up: seen across most mileage ranges
• Tyres and wheels Seen in MOT results

  Tyres and wheels is one of the most common MOT problem areas for this model (1.5 MOT notes per 100 tests).

  What to check: Check tyre age, tread depth, sidewall damage, wheel condition, and alignment wear.

  • Ask the seller: Have uneven tyre wear, damaged tyres, wheel damage, or alignment issues been corrected?
  • Example MOT wording: Nail in tyre; Wheel/tyre protruding beyond wheel arch; incorrectly seated on the wheel rim
  • Where it shows up: seen across most mileage ranges
• Suspension and steering Seen in MOT results

  Suspension and steering is one of the most common MOT problem areas for this model (1.1 MOT notes per 100 tests).

  What to check: Listen for knocks, check uneven tyre wear, and inspect steering play.

  • Ask the seller: Has any suspension, steering, ball-joint, spring, or wheel-bearing advisory been repaired?
  • Example MOT wording: across an axle; ball joint excessively worn; ball joint dust cover no longer prevents the ingress of dirt
  • Where it shows up: seen across most mileage ranges
• Emissions, engine, and exhaust Seen in MOT results

  Emissions, engine, and exhaust is one of the most common MOT problem areas for this model (0.2 MOT notes per 100 tests).

  What to check: Check warning lights, smoke, exhaust leaks, recent emissions failures, and service history.

  • Ask the seller: Has the car had repeat emissions, smoke, exhaust, lambda, or engine-warning MOT failures?
  • Example MOT wording: leaking excessively from engine; has a major leak of exhaust gases
• Corrosion and structure Seen in MOT results

  Corrosion and structure is one of the most common MOT problem areas for this model (0.1 MOT notes per 100 tests).

  What to check: Inspect sills, subframes, mounting points, arches, and underside corrosion advisories.

  • Ask the seller: Has any sill, subframe, mounting-point, chassis, or structural corrosion advisory been repaired properly?
  • Example MOT wording: excessively corroded; ferrule excessively corroded; inadequately repaired such that structural rigidity is significantly reduced

What changes with mileage?

Past 100k miles on the Hyundai Ioniq, MOT records most often point to lights and electrical, suspension and steering, and windscreen, wipers, and mirrors.

Common MOT problem areas

36,972 MOT tests analysed for this model

27,789 Distinct vehicles represented

8.6% Recorded MOT test failure rate — -10.2 percentage points vs all models

Common faults: what usually fails on this model?

Windscreen, wipers, and mirrors is the clearest named problem area in the MOT history (6.4 MOT notes per 100 tests). These counts are issue notes, not failure rates, because a single MOT can list several faults.

Windscreen, wipers, and mirrors

• does not clear the windscreen effectively
• damaged but not adversely affecting driver's view

6.4 MOT notes per 100 tests

Lights and electrical

• inoperative in the case of a single lamp or all lamps
• has a product on the light source so that the light output is severely reduced

1.9 MOT notes per 100 tests

Tyres and wheels

• Nail in tyre
• Wheel/tyre protruding beyond wheel arch

1.5 MOT notes per 100 tests

Suspension and steering

• across an axle
• ball joint excessively worn

1.1 MOT notes per 100 tests

Emissions, engine, and exhaust

• leaking excessively from engine
• has a major leak of exhaust gases

0.2 MOT notes per 100 tests

Corrosion and structure

• excessively corroded
• ferrule excessively corroded

0.1 MOT notes per 100 tests

Seatbelts and safety systems

• Standard fitment seat belt missing

0.0 MOT notes per 100 tests

Recall-related areas to verify

Official recall areas

Manufacturer recall notices for the Hyundai Ioniq mainly involve 2 areas: lights and electrical and tyres and wheels. Treat each as something to verify on the specific car you are viewing; the recall table below shows the official notice text.

Lights and electrical

• Hybrid warning lamp eliminated on instrument cluster may indicate thermal damage to power relay assembly and power cable
• Coolant may leak into electric power control unit

2 recalls · 5,299 vehicles

Tyres and wheels

• Wheel nuts not tightened to correct specification

2 recalls · 92 vehicles

Mileage and age checks

Mileage changes: what starts showing up after high mileage?

Past 100k miles on the Hyundai Ioniq, MOT records most often point to lights and electrical, suspension and steering, and windscreen, wipers, and mirrors. On lower-mileage cars, the most common named areas are windscreen, wipers, and mirrors, tyres and wheels, and lights and electrical.

Mileage range	Tests	Vehicles	Failure rate (vs all models)	Median mileage
0-50k	22,674	18,573	7.8%-3.0 percentage points vs all models	29,686 miles
50-100k	10,820	7,807	9.7%-11.0 percentage points vs all models	65,902 miles
100-150k	2,514	1,740	9.6%-16.6 percentage points vs all models	118,095 miles
150-200k	684	458	10.7%-16.6 percentage points vs all models	165,679 miles
200k+	122	75	20.5%-6.1 percentage points vs all models	217,535 miles

Problem areas by mileage

Past 100k miles on the Hyundai Ioniq, MOT records most often point to lights and electrical, suspension and steering, and windscreen, wipers, and mirrors.

Mileage range	Car areas most often recorded	Specific MOT defect examples
0-50k	Windscreen, wipers, and mirrors (7.4 MOT notes per 100 tests) Tyres and wheels (1.4 MOT notes per 100 tests) Lights and electrical (0.9 MOT notes per 100 tests)	No exact MOT wording is available for this mileage range.
50-100k	Windscreen, wipers, and mirrors (5.3 MOT notes per 100 tests) Lights and electrical (2.6 MOT notes per 100 tests) Tyres and wheels (1.7 MOT notes per 100 tests)	No exact MOT wording is available for this mileage range.
100-150k	Lights and electrical (6.4 MOT notes per 100 tests) Suspension and steering (4.6 MOT notes per 100 tests) Windscreen, wipers, and mirrors (3.6 MOT notes per 100 tests)	No exact MOT wording is available for this mileage range.
150-200k	Suspension and steering (10.5 MOT notes per 100 tests) Lights and electrical (6.6 MOT notes per 100 tests) Windscreen, wipers, and mirrors (2.3 MOT notes per 100 tests)	No exact MOT wording is available for this mileage range.
200k+	Suspension and steering (15.6 MOT notes per 100 tests) Lights and electrical (14.8 MOT notes per 100 tests) Windscreen, wipers, and mirrors (5.7 MOT notes per 100 tests)	No exact MOT wording is available for this mileage range.

Fair comparisons: is this problem normal for its age?

The MOT failure rate rises from 7.8% at 0-3 years to 10.7% at 6-10 years. Compare the car with the nearest age range before treating a fault as normal wear or a warning sign. The average MOT failure rate across all models in the same dataset is 18.7%. The highest failure rate by age is 10.7% for 6-10 years cars, based on 2,991 tests.

Age range	Tests	Vehicles	Failure rate (vs all models)	Median age
0-3 years 2023–2026 reg.	8,433	7,025	7.8%-0.6 percentage points vs all models	2.9 years
3-6 years 2020–2023 reg.	25,548	19,435	8.6%-2.0 percentage points vs all models	4.6 years
6-10 years 2016–2020 reg.	2,991	2,419	10.7%-5.9 percentage points vs all models	6.3 years

Recall records and data freshness

Recall context: are there safety notices to know about?

3 relevant recall notices appear for this model. Treat them as safety checks to verify for the exact car, not as normal MOT wear.

2019-12-08	WHEEL NUTS NOT TIGHTENED TO CORRECT SPECIFICATION Wheel nuts not tightened to the correct specification Tighten wheel nuts to correct specification
2018-12-10	HYBRID WARNING LAMP ELIMINATED ON INSTRUMENT CLUSTER MAY INDICATE THERMAL DAMAGE TO POWER RELAY ASSEMBLY AND POWER CABLE Power relay connections with increased risk of a thermal incident. Replace power relays. Inspect relay holders and replace if required.
2018-05-01	COOLANT MAY LEAK INTO ELECTRIC POWER CONTROL UNIT The Electric Power Control Unit (EPCU) to have some cracks in the aluminium casting which may cause the casting to become porous. The EPCU is cooled by a coolant channel and due to the porous cracks it is possible for the coolant to leak inside the EPCU unit causing the high voltage system to immediately shut down. To inspect the units with UV lamp. If found to be porous the unit will be replaced.

Related searches

Common ways people look up the Hyundai Ioniq. Each link runs the search and lands on the relevant section of this report.

• Hyundai Ioniq common problems
• Hyundai Ioniq reliability
• Hyundai Ioniq after 100k miles
• Hyundai Ioniq after 200k miles
• Hyundai Ioniq high mileage common problems
• Hyundai Ioniq age related problems
• Hyundai Ioniq MOT failures
• Hyundai Ioniq recalls

Related reliability guides

Sources used: DVSA MOT tests (Apr 2026); vehicle recalls (Apr 2026); MOT fault wording (May 2025). These are patterns from many MOT tests and recall notices. They help you decide what to inspect and what to ask; they do not certify the condition of one specific car.