Generations
OS — First Generation
2017–2022
1.0 T-GDI, 1.6 GDI, 1.6 Hybrid, Electric
Top issues to watch for
The most serious Hyundai Kona problems ranked by severity. We track 9 known issues — here are the ones you need to know about first.
Dangerous
Battery fire recall (early)
Early Kona Electric models were subject to a global recall due to manufacturing defects in the LG Chem battery cells that could cause thermal runaway and fire. The defect involves contamination during battery cell manufacturing that can cause internal short circuits. Multiple vehicle fires were reported internationally, with at least 15 confirmed cases leading to total vehicle loss. All affected vehicles received complete battery pack replacement under recall.
What happens if ignoredIf the battery defect is present, thermal runaway can occur leading to vehicle fire and total loss. The vehicle should not be driven or charged if battery overheating or unusual smells are detected. All affected vehicles should have received new battery packs under recall.
Main dealer
£0–£0
Parts only
£0–£0
DVSA recall 9561
Major
DPF issues
The diesel particulate filter can become blocked on Kona diesel variants, particularly on vehicles used primarily for short urban journeys. The DPF requires regular motorway driving to reach the temperatures needed for automatic regeneration. Blocked filters trigger dashboard warning lights and eventually prevent the engine from starting if not addressed.
What happens if ignoredComplete DPF blockage prevents engine starting and requires professional cleaning or replacement. Driving with DPF warnings can cause permanent filter damage. Professional DPF cleaning costs £300-600, replacement costs £1,200-1,500 including labour.
Independent garage
£400–£800
Specialist
£500–£1,000
Main dealer
£800–£1,500
Parts only
£600–£1,200
Major
Carbon buildup (GDI engines)
Direct injection petrol engines develop carbon deposits on intake valves because fuel is not sprayed over the valves to clean them. The 1.0 T-GDI and 1.6 GDI engines are particularly susceptible to this issue. Carbon buildup reduces airflow, causes rough idling, and triggers misfires. Professional cleaning every 60,000-80,000 miles prevents performance degradation.
What happens if ignoredSevere carbon buildup causes misfires, reduced power, and increased fuel consumption. In extreme cases, carbon deposits can cause valve damage requiring cylinder head work. Professional walnut blasting cleaning costs £300-600 and should be performed every 60,000-80,000 miles.
Independent garage
£250–£400
Specialist
£300–£500
Main dealer
£400–£600
Parts only
£50–£100
Major
Electronic parking brake failure (Hybrid)
Hybrid variants show significantly elevated electronic parking brake failures at MOT testing. The system can fail to engage or disengage properly, or lose efficiency below the required 50% threshold. This is distinct from the manual handbrake mechanism and relates specifically to the electronic actuator and control module on hybrid models.
What happens if ignoredFailed electronic parking brake creates safety risk on slopes and may prevent vehicle passing MOT test. Replacement of parking brake actuator typically required. Complete system failure requires vehicle recovery as manual release may not be possible.
Independent garage
£400–£700
Specialist
£500–£800
Main dealer
£600–£1,000
Parts only
£200–£400
5 more known issues tracked
Including wear items, electrical niggles, and generation-specific problems.
MOT failure hotspots
Based on DVSA MOT test data. These are the items where the Hyundai Kona fails at a significantly higher rate than the average car.
Obligatory rear fog lamp missing, or a front or...
Lights & Electrics · 40-60k miles
MOT failure rate: 16x the fleet average
Sample: 6,169 tests
Emissions failure
Exhaust & Emissions · 0-20k miles
MOT failure rate: 9.3x the fleet average
Sample: 9,108 tests
Looking at a specific Hyundai Kona?
Check its dealer service history to see if the maintenance that prevents these problems was actually done.
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Technical service bulletins & recalls
Official manufacturer notices issued to dealerships. If a car hasn't had recall work done, it needs doing — check with the dealer network.
20-EN-003H
Engine oil consumption - piston ring replacement
Excessive oil consumption on 1.6 GDI engines due to faulty piston rings. Warranty extension to 120,000 miles. Check consumption test procedure and ring replacement coverage.
Related
- Hyundai Kona buyer's guide
- Hyundai Kona service history check
- Hyundai Kona service schedule & costs
- Hyundai Kona MOT failure rates
- Hyundai Kona price guide
- How to check Hyundai service history
- Buying a car without service history
- Hyundai Kona car check £7.49
- Free car faults check
- Free MOT failure rate check
- Free car check
Hyundai Kona reliability FAQs
What are the most common problems with the Hyundai Kona?
The Hyundai Kona has 9 known issues across 4 severity levels. The most serious are: Battery fire recall (early).
Is the Hyundai Kona reliable?
The Hyundai Kona has 1 dangerous and 4 major known issues. Most can be avoided with a thorough pre-purchase check and full service history.
How much does it cost to fix Hyundai Kona problems?
Costs vary by issue. Independent garages are typically 30-50% cheaper than main dealers for most repairs.