Vehicle Questions and Answers
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The main issues that owners of the 2003 Hyundai XG350 commonly face include a rough idle caused by a faulty EGR valve and oxygen sensor failure. When the EGR valve malfunctions, it disrupts the flow and performance of the EGR system, resulting in performance issues such as decreased power, slower acceleration, and reduced fuel efficiency. EGR valves can get stuck in either the 'open' or 'closed' position, usually due to a buildup of soot, carbon, and dirt from fuel. The oxygen sensor in your car monitors oxygen levels in the exhaust gases as they leave the engine. It's recommended to replace the oxygen sensor every 60,000 to 90,000 miles as it is a component that wears out and can malfunction over time.
The issues with the 2003 Hyundai XG350 include problems related to electrical systems, the engine, power steering, and transmission.