What are the most common Hyundai Kona problems?
According to Au7o's analysis of 3,320+ owner reports, the 2021 Hyundai Kona has 12 documented issues. The most frequently reported are: High-Voltage Battery Fire Risk (Kona Electric), 7-Speed DCT Shudder and Delayed Engagement, 2.0L Nu MPI Piston Ring Defect Causing Knocking and Engine Seizure (Recall 21V301). Of these, 4 are rated critical and should be addressed promptly.
Is the Hyundai Kona reliable?
The 2021 Hyundai Kona has 12 known issues documented across 3,320+ owner reports. 4 issues are rated critical: High-Voltage Battery Fire Risk (Kona Electric) and 7-Speed DCT Shudder and Delayed Engagement and 2.0L Nu MPI Piston Ring Defect Causing Knocking and Engine Seizure (Recall 21V301) and EPCU Coolant Leak Causing Loss of Drive Power (Kona Electric, Recall 22V941). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Hyundai Kona problems?
Repair costs for known Hyundai Kona issues range from $0 to $3,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, High-Voltage Battery Fire Risk (Kona Electric), typically costs $0-$0 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What is the 2019-2022 Hyundai Kona High-Voltage Battery Fire Risk (Kona Electric)?
Kona Electric models from 2019-2022 were subject to a major recall (21V-193) for fire risk in the high-voltage battery pack. Defective cells from LG Energy Solution can short-circuit internally, leading to thermal runaway and fire, even while parked. Hyundai recalled approximatel… Repairs typically run $0-$0. Severity: high.
What is the 2018-2023 Hyundai Kona 7-Speed DCT Shudder and Delayed Engagement?
Kona models with the 1.6L turbo and 7-speed DCT experience shuddering during low-speed driving, delayed engagement from a stop, and lurching during parking maneuvers. The dry dual-clutch design struggles with heat and wear. Hyundai extended DCT warranty to 10 years/100,000 miles… Repairs typically run $0-$2,800. Severity: high.
What is the 2019-2021 Hyundai Kona 2.0L Nu MPI Piston Ring Defect Causing Knocking and Engine Seizure (Recall 21V301)?
On 2019-2021 Konas with the 2.0L Nu MPI engine, piston oil rings that were not consistently heat-treated can scuff the cylinder bores. This causes rising oil consumption, a progressively louder engine knock, and ultimately engine seizure or stall; a seized engine can throw a conn… Severity: high.
What is the 2021 Hyundai Kona EPCU Coolant Leak Causing Loss of Drive Power (Kona Electric, Recall 22V941)?
On 2021 Kona Electric units, the Electric Power Control Unit (EPCU) was inadequately sealed at the DC-DC converter housing due to insufficient steam cleaning during production. Coolant can leak internally onto the EPCU circuit board and short it, causing a sudden loss of drive po… Severity: high.
What is the 2018-2025 Hyundai Kona IVT/CVT Judder and Droning Noise?
The Kona with the 2.0L engine uses Hyundai's IVT (Intelligent Variable Transmission, a chain-driven CVT) that can develop juddering at low speeds and a droning noise at highway speeds. The transmission fluid degrades faster than expected, and the chain and pulleys wear. TSB 21-AT… Repairs typically run $150-$1,400. Severity: medium.
What is the 2018-2023 Hyundai Kona Panoramic Sunroof Water Leak?
Kona models equipped with the panoramic sunroof experience water leaks, typically at the front corners. The drain tubes become clogged or disconnected, allowing water to pool in the headliner, drip onto occupants, and potentially damage electrical components. This is especially c… Repairs typically run $50-$1,000. Severity: medium.
What is the 2018-2023 Hyundai Kona Oil Dilution from Short Trips (1.6T)?
The 1.6T GDI engine in the Kona can experience fuel dilution of the engine oil, particularly in vehicles used primarily for short trips in cold weather. Unburned fuel washes past the piston rings and mixes with the engine oil, raising the oil level above the full mark and thinnin… Repairs typically run $50-$200. Severity: medium.
What is the 2019-2023 Hyundai Kona Reduced DC Fast-Charging Speed and BMS 'Check EV System' Charging Faults (Kona Electric)?
Kona Electric owners report DC fast charging underperforming its rating and 'Check Electric Vehicle System' / BMS faults that cut charge limits or stop a session. The battery's thermal management throttles or halts charging during repeated or hot-weather fast-charge sessions, and… Severity: medium.
What is the 2019-2023 Hyundai Kona 12V Auxiliary Battery Repeated Drain and Dead-Car No-Start (Kona Electric)?
Kona Electric owners across model years report the small 12V auxiliary battery repeatedly draining, sometimes within weeks, leaving the car completely dead and unable to wake the high-voltage system. Because the 12V system must energize before the main pack activates, a flat 12V… Severity: medium.
What is the 2018-2023 Hyundai Kona A/C Compressor Noise and Failure?
The A/C compressor on the Kona 1.6T and 2.0L can develop a rattling or clicking noise, followed by reduced cooling performance and eventual failure. The compressor clutch bearing is often the first component to fail, producing a squealing noise when the A/C is engaged. Complete c… Repairs typically run $400-$1,500. Severity: medium.
What is the 2018-2023 Hyundai Kona Paint Peeling / Clear Coat Failure?
Multiple Kona owners report premature paint peeling and clear coat failure, particularly on horizontal panels (hood, roof) and in lighter colors. The clear coat delaminates from the base coat, creating an unsightly appearance that worsens quickly once started. The issue appears t… Repairs typically run $500-$3,000. Severity: low.
What is the 2018-2025 Hyundai Kona Infotainment Black/Frozen Screen and Apple CarPlay/Bluetooth Disconnects?
Kona and Kona N/Electric owners report the touchscreen going black or frozen, and Apple CarPlay/Android Auto disconnecting at random with a 'phone not responding, reconnect on the road' prompt. The faults trace to infotainment firmware/connectivity bugs rather than a single hardw… Severity: low.
