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Hyundai Sonata Common Problems and Repair Costs
The Hyundai Sonata has documented issues used buyers should know about — including engine seizure and failure. Here's a full breakdown by model year.
Known Issues — Hyundai Sonata (1990–2026)
Engine seizure and failure
theta II engine; massive recall/class action
📅 2011–2019⚠️ High
Engine fire risk
connecting rod failure on Theta II 2.4L and 2.0T
📅 2011–2019⚠️ High
What to Check Before Buying
- Run a VIN report for accidents and title issues
- Ask about Engine seizure and failure — verify it has been addressed
- Check recalls at NHTSA.gov/recalls
- Have an independent mechanic inspect it ($100–$200)
- Ask for complete service records
Reliability Overview
The Hyundai Sonata can be a solid vehicle when maintained, but the issues above represent real financial risk. A pre-purchase inspection by a Hyundai-familiar mechanic is strongly recommended.
Research Before You Buy
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