Check Repair Costs →
RepairIQ › Known Issues › Hyundai Sonata Common Problems and Repair Costs

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

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

RepairIQ's Before You Buy tool shows known issues, repair costs, and a pre-purchase checklist for any Hyundai Sonata.

Use RepairIQ Free →