How Often Should the Catalytic Converter Be Replaced?
2 Answers
The catalytic converter should be replaced every 10,000 to 20,000 kilometers. Maintenance tips for the catalytic converter: 1. Fuel quality selection: Avoid using low-quality gasoline. When fuel quality is poor, sulfur, phosphorus, lead in the fuel, and manganese in the anti-knock agent can form chemical complexes inside the catalytic converter after combustion, leading to clogging over time. 2. Cleaning: Typically, the catalytic converter should be cleaned every 30,000 kilometers. If you notice increased fuel consumption or reduced power, inspect and clean the catalytic converter as needed. Clean the catalytic converter each time the fuel injectors, throttle body, and intake system are serviced. Before annual vehicle inspections, clean the catalytic converter to ensure smooth passage of the emissions test.
I don't think the catalytic converter is something with a fixed replacement schedule like engine oil. It's more like the heart of the car's exhaust system, typically lasting around 100,000 to 150,000 kilometers, but it really depends on your driving habits. I commute on highways, and my converter is still functioning fine at 120,000 kilometers. The key is to watch for symptoms, like strange exhaust smells, the engine warning light coming on, or a sudden spike in fuel consumption—these could mean the converter is clogged or failing. Replacing one is quite expensive, costing several thousand yuan, so I recommend having mechanics check the exhaust values during regular maintenance rather than waiting for a breakdown. Also, using low-quality or poor-grade gasoline can damage the converter, which is why I always fill up at major gas stations. In short, there's no one-size-fits-all timeline—just rely on inspections and listening to your car.
