EngineLow
Carbon build up on the 1.0 T-GDi
- Typically appears
- 50,000+ miles
- What to inspect
- Cold start and check idle quality
2021–2025 Hyundai Bayon · common problems & known faults
A small crossover with simple mechanicals and a strong warranty story.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2021–2025 Hyundai Bayon are Juddering or hesitation when pulling away from a standstill on models equipped with the 7-speed DCT, indicating dry clutch pack wear or overheating, Rear disc corrosion on low mileage cars and Jerky gear changes or failure to engage the clutch smoothly on iMT (Intelligent Manual Transmission) models due to actuator hesitation. 1 of the documented issues are rated high severity · inspect these first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the Hyundai Bayon.
6.4/ 10
- Critical
- 0
- High
- 1
- Medium
- 3
- Low
- 4
Guidance only · reflects reported patterns, not a specific car's condition.
Hyundai Bayon 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
ElectricalLow
Infotainment and camera faults
- Typically appears
- Age-related
- What to inspect
- Test the screen, camera and mirroring
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Build the inspection planInteriorLow
Trim wear on hire and lease returns
- Typically appears
- 40,000+ miles
- What to inspect
- Inspect seats, wheel and gear knob wear
BrakesMedium
Rear disc corrosion on low mileage cars
- Typically appears
- Age-related
- What to inspect
- Inspect rear discs for pitting
TransmissionMedium
Jerky gear changes or failure to engage the clutch smoothly on iMT (Intelligent Manual Transmission) models due to actuator hesitation.
- Typically appears
- 20,000-40,000 miles
- What to inspect
- Depress the clutch pedal with the engine off to listen for excessive actuator clicking, then test for smooth take-up during a low-speed forecourt manoeuvre.
SuspensionLow
Clunking or knocking noise from the front end caused by premature wear of the front anti-roll bar drop links.
- Typically appears
- 30,000-50,000 miles
- What to inspect
- Rock the vehicle side to side aggressively while stationary and listen for knocks, or drive over a forecourt speed bump at low speed with the windows down.
DrivetrainHigh
Juddering or hesitation when pulling away from a standstill on models equipped with the 7-speed DCT, indicating dry clutch pack wear or overheating.
- Typically appears
- 40,000-60,000 miles
- What to inspect
- Perform a hill start or pull away very slowly from a standstill on the forecourt; feel for vibrations through the seat or hesitation before the clutch fully engages.
ElectricalMedium
48V Mild Hybrid system warning light on the dash or failure of the engine to seamlessly restart during stop-start operation.
- Typically appears
- 3-4 years
- What to inspect
- Check the dash for hybrid system warnings on start-up. Trigger the stop-start system on the forecourt to ensure the belt-starter generator restarts the engine instantly and smoothly.
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Build my inspection planFrequently asked questions
Is the Bayon a safe buy?
Yes, very low fault rate so far.
Warranty?
Five years transferable, which helps resale.
Weak point?
Interior plastics rather than mechanicals.
Does the 1.0 T-GDi engine use a timing belt or a timing chain?
The 1.0-litre T-GDi engine fitted to the Bayon utilises a timing chain rather than a belt. While designed to last the lifetime of the vehicle, chain stretch can occur if previous owners have neglected scheduled oil changes. Always verify the service history to ensure correct grade oil was used at the required intervals.
What should I look out for with the Intelligent Manual Transmission (iMT)?
The iMT features an electronic clutch-by-wire system, meaning there is no mechanical link between the pedal and the clutch. Ensure the system engages smoothly without hesitation. If the pedal feels disconnected or the car stalls unexpectedly during forecourt manoeuvres, it may require a software update or a new clutch actuator.
Does the 48V mild-hybrid system affect boot space or spare wheel provision?
Yes, the 48V lithium-ion battery is located under the boot floor. This reduces the overall luggage capacity slightly compared to non-hybrid models and completely removes the space required for a spare wheel. Dealers must ensure the tyre inflation kit is present and in date, as customers often query the lack of a spare.
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.
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