Hyundai i20 (Gen 3)
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 severityThe 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.
48V Battery System Errors
medium severityMild-hybrid models can sometimes display battery warning lights or fail to use the start-stop system correctly due to sensor faults.
1.0 T-GDI timing chain tensioner wear
high severityThe 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.
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