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Can a Vehicle Pass Inspection Without a Catalytic Converter?

2 Answers
KateFitz
08/30/25 8:20am
No, it cannot. Below is relevant information about catalytic converters: Introduction: The catalytic converter, installed in a vehicle's exhaust system, is the most crucial external purification device. It converts harmful gases such as CO, HC, and NOx emitted from vehicle exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction reactions. Working Principle: When high-temperature vehicle exhaust passes through the purification device, the purifying agent in the catalytic converter enhances the activity of CO, HC, and NOx gases, promoting specific oxidation-reduction chemical reactions. Performance Characteristics: Catalytic converters feature stable performance, reliable quality, and long service life. They are widely applicable to models from Toyota, Honda, Buick, Audi, Volkswagen, Hyundai, Suzuki, Changhe, and more.
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DeReid
09/12/25 5:12am
Someone asked me about this recently, and I need to explain it from a mechanic's perspective. The catalytic converter is an exhaust purification device in a car, primarily responsible for converting harmful gases and reducing pollution emissions. If it's removed or broken and not replaced, the emissions test during inspection will definitely exceed the standard and fail, as current inspection standards are quite strict, especially regarding exhaust levels. I've seen many car owners remove the catalytic converter to save money, only to fail the annual inspection and end up spending more on repairs. In fact, a well-maintained catalytic converter can also extend the engine's lifespan—don't underestimate it. Regular vehicle inspections can prevent problems; don't wait until the inspection fails to panic. Safe driving is more important than anything.
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