UK Reliability Directory

Hyundai i20 (Gen 3)

Production Years: 2020 - 20243 Documented Faults

The latest i20 is a sharp-looking hatchback with advanced mild-hybrid tech. While generally reliable, the 7-speed DCT and 48V battery systems require inspection.

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Common Faults & Reliability

These are the most common documented problems for the Hyundai i20 (Gen 3), sorted by their typical impact and frequency.

DCT Shudder & Hesitation

medium severity

The 7-speed dual-clutch transmission can develop a judder, especially in stop-start traffic. Often resolved with a software update but may require clutch packs.

Est. repair cost:£0–£1,200

48V Battery System Errors

medium severity

Mild-hybrid models can sometimes display battery warning lights or fail to use the start-stop system correctly due to sensor faults.

Est. repair cost:£150–£500

1.0 T-GDI timing chain tensioner wear

high severity

The timing chain tensioner and guide rails on the 1.0 T-GDI three-cylinder turbo can wear prematurely, causing a distinctive rattle on cold start as hydraulic pressure leaks overnight. If ignored the chain can stretch enough to skip a tooth, risking catastrophic valve-piston contact.

Est. repair cost:£600–£1,200

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