How Does a Bad Catalytic Converter Affect Gas Mileage?

How Does a Bad Catalytic Converter Affect Gas Mileage?

If you regularly drive short distances, your catalytic converter may not reach temperatures high enough to properly burn the hydrocarbons that it collects – this may result in soot and carbon build-up inside its honeycomb-shaped passages, leading to soot buildup or carbon deposits inside its interior. As soon as this occurs, you will experience reduced acceleration and an audible rattle …

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