Ignition coils
usually 80,000–150,000 km · Wear part
Signs: Misfire
Fix: Replace coil
€60–180
Common faults, service intervals and costs
Hyundai Bayon
2021–now
2
engines covered
6
known faults
1,508
roadworthiness tests in the statistics
Enter your VIN and mileage and get a plan built for your exact engine and gearbox.
The Hyundai Bayon has been built since 2021.
For this generation we cover 2 engines and 6 known faults, each with the mileage range where it usually appears.
The most expensive known risk is 7DCT clutch judder / overheating: it usually appears at 40,000–150,000 km and costs €600–1,800 to fix.
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: lights, wipers and visibility (10.0 %), tyres and wheels (2.6 %), brakes (0.7 %). It fails more often than an average car of the same age and mileage on: lights, wipers and visibility, exhaust, emissions and leaks. It fails less often than average on: brakes, tyres and wheels.
Engines
| Engine | Fuel | Timing drive | Oil |
|---|---|---|---|
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated) | Petrol | Chain | 0W-20 / 5W-30 · API SN · ~3.6 L · every 15,000 km |
| 1.0 / 1.4 T-GDi (Hyundai-Kia Kappa turbo) | Petrol | Chain | 5W-30 / 0W-20 · ACEA C2 / C5 (API SN) · every 15,000 km |
Faults by engine
1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)
1.0 / 1.4 T-GDi (Hyundai-Kia Kappa turbo)
Turbo oil feed / wastegate
usually 80,000–160,000 km · Medium risk
Signs: Whistle, loss of boost
Fix: Service or replace the turbo
€400–1,200
Carbon build-up on intake valves (direct injection)
usually 90,000–180,000 km · Medium risk
Signs: Rough idle, misfire when cold
Fix: Clean the intake valves (walnut blasting)
€300–700
Ignition coils / spark plugs
usually 120,000–240,000 km · Wear part
Signs: Misfire under load
Fix: Replace plugs and the faulty coil
€80–250
Gearboxes
Manual
Clutch wear
usually 120,000–200,000 km · Medium risk
Signs: Slipping, high bite point
Fix: Replace clutch kit
€500–900
7DCT (7-speed, dry clutch)
7DCT clutch judder / overheating
usually 40,000–150,000 km · Medium risk
Signs: Shudder in traffic, 'transmission overheating' message
Fix: Software update, clutch replacement
€600–1,800
Scheduled service
Intervals and typical prices for the 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated) engine. Other engines differ in oil, timing drive and some filters; the app gives the exact plan.
| Item | Interval | Typical price |
|---|---|---|
| Engine oil + oil filterEngine | every 15,000 km or every 12 months | €70–150 |
| Cabin (pollen) filterClimate | every 15,000 km or every 12 months | €15–40 |
| Brake fluidBrakes | every 24 months | €50–95 |
| A/C service (regas + desiccant)Climate | every 24 months | €70–150 |
| Air filterEngine | every 30,000 km or every 24 months | €15–45 |
| Spark plugsIgnition | every 60,000 km or every 48 months | €50–160 |
| Auxiliary (serpentine) beltEngine | every 120,000 km | €70–180 |
| Coolant replacementCooling | every 150,000 km or every 96 months | €70–150 |
| Timing chain inspection (listen on cold start)Engine | every 150,000 km | €0–120 |
| Manual gearbox oilTransmission | every 150,000 km | €60–130 |
| Front brake padsBrakes | usually at 30,000–60,000 km | €60–150 |
| Front brake discs + padsBrakes | usually at 60,000–120,000 km | €150–320 |
| Rear brake padsBrakes | usually at 50,000–90,000 km | €50–130 |
| Tyres (set of 4)Wheels | usually at 40,000–60,000 km | €320–700 |
| Wiper bladesBody | checked at service | €20–50 |
| 12V batteryElectrical | checked at service | €100–220 |
Roadworthiness tests by mileage
Share of tests in the United Kingdom (DVSA MOT, 2024) that this model failed because of each system. Bold red means more often and green less often than an average car of the same age and mileage. Sample: 1,508 tests.
| thousand km | 0–50 |
|---|---|
| Brakes | 0.7 % |
| Suspension | 0.2 % |
| Steering | 0.1 % |
| Tyres and wheels | 2.6 % |
| Lights, wipers and visibility | 10.0 % |
| Body and corrosion | 0.1 % |
| Exhaust, emissions and leaks | 0.6 % |
Roadworthiness tests in the Netherlands by age
Share of this model's Dutch fleet that had a defect in each system at a roadworthiness test (APK) in 2025. Bold red means more often and green less often than an average car of the same age and fuel. Sample: 2,016 cars.
| age (years) | 3–5 |
|---|---|
| Brakes | 0.3 % |
| Suspension | 0.0 % |
| Steering | 0.0 % |
| Tyres and wheels | 5.0 % |
| Lights, wipers and visibility | 3.3 % |
| Body and corrosion | 0.1 % |
| Exhaust, emissions and leaks | 0.0 % |
Most common engine versions in the EU
New cars of this generation registered in the EU, Iceland and Norway 2010–2025: 109,416, of which 1,491 in Croatia. The share shows how common each version is.
| Version | Share | Years | CO₂ | Fuel use |
|---|---|---|---|---|
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · 74 kW (101 hp) · Petrol | 25.2 % | 2021–2025 | 123 g/km | 5.4 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · 73 kW (99 hp) · Hybrid | 19.3 % | 2022–2025 | 119 g/km | 5.3 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · 73 kW (99 hp) · Petrol | 13.3 % | 2021–2025 | 123 g/km | 5.4 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · 74 kW (101 hp) · Hybrid | 13.3 % | 2021–2025 | 119 g/km | 5.3 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.2 (1,197 cm³) · 61 kW (83 hp) · Petrol | 9.9 % | 2021–2025 | 126 g/km | 5.4 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.2 (1,197 cm³) · 62 kW (84 hp) · Petrol | 9.6 % | 2021–2025 | 126 g/km | 5.8 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.2 (1,197 cm³) · 58 kW (79 hp) · Petrol | 3.5 % | 2024–2025 | 127 g/km | 5.7 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.2 (1,197 cm³) · 57 kW (77 hp) · Petrol | 2.0 % | 2024–2025 | 127 g/km | 5.7 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · 88 kW (120 hp) · Hybrid | 1.9 % | 2022–2025 | 120 g/km | 5.3 L |
| 1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated)1.0 (998 cm³) · Petrol | 1.0 % | 2021–2025 | 122 g/km | 5.6 L |
Source: European Environment Agency (EEA), monitoring of CO₂ emissions from new passenger cars, CC BY 4.0. CO₂ and fuel use are official type-approval values (WLTP from 2021), not real-world consumption.
Common questions
Does the Hyundai Bayon have a timing chain or a timing belt?
1.0 / 1.2 / 1.4 MPi (Hyundai-Kia Kappa, naturally aspirated): chain; 1.0 / 1.4 T-GDi (Hyundai-Kia Kappa turbo): chain.
What are the known problems with the Hyundai Bayon?
The faults with the highest risk: 7DCT clutch judder / overheating (40,000–150,000 km, €600–1,800); turbo oil feed / wastegate (80,000–160,000 km, €400–1,200); clutch wear (120,000–200,000 km, €500–900); carbon build-up on intake valves (direct injection) (90,000–180,000 km, €300–700). The full list by engine is on this page.
What does the Hyundai Bayon most often fail its roadworthiness test on?
In UK roadworthiness tests in 2024, at 0–50 thousand km this model most often failed on: lights, wipers and visibility (10.0 %), tyres and wheels (2.6 %), brakes (0.7 %). It fails more often than an average car of the same age and mileage on: lights, wipers and visibility, exhaust, emissions and leaks. It fails less often than average on: brakes, tyres and wheels.
What should you check when buying a used Hyundai Bayon?
Before you buy, ask an authorised dealer to check by VIN whether the car has any open recalls. On the test drive, watch for these signs: shudder in traffic, 'transmission overheating' message; whistle, loss of boost. The full checklist is in the guide to buying a used car.
Models with the same engines
These models share engines with this car, so they share some of its faults too.
Kia Ceed III 2018–Kia Stonic 2017–Kia Rio IV 2017–2023Kia Picanto III 2017–Hyundai Kona I 2017–2023Kia XCeed 2019–Hyundai i20 III 2020–Hyundai i10 III 2019–
Other Hyundai models
Hyundai Ioniq 5 2021–Hyundai Ioniq 6 2022–Hyundai Tucson (NX4) 2020–Hyundai Kona II 2023–Hyundai Santa Fe V 2023–Hyundai Inster 2024–Hyundai Santa Fe IV 2018–2023Hyundai i30 (N) 2017–Hyundai i30 (PD) 2017–Hyundai Ioniq 2016–2022
Sources and notes
Faults, intervals and prices are indicative and collected from public sources and owner experience; always rely on the service book and a qualified workshop. Test statistics: DVSA – Anonymised MOT tests and results, Open Government Licence v3.0. Dutch tests: RDW Open Data (CC0). Engine versions: EEA, monitoring of CO₂ emissions from new passenger cars (CC BY 4.0, DG CLIMA). Owner complaints: NHTSA ODI (public domain). Recalls: DVSA Vehicle Safety Branch Recalls Database, OGL v3.0. Brand and model names are trademarks of their owners and are used only to describe the vehicles.
Updated 08/10/2026