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How long can you drive with a clogged catalytic converter?

My catalytic converter is clogged and I’ve been driving on it these past three months because I don’t have the budget for repairs. How long can you drive with a clogged catalytic converter?

Talullah Blanco · Updated on Jul 19, 2022

Reviewed by Shannon Martin, Licensed Insurance Agent.

You can drive with a clogged catalytic converter for as long as you’d like. But you may fail an emissions test and experience the following symptoms when you drive with a clogged catalytic converter:

Sluggish engine performance

Reduced acceleration

Dark exhaust smoke

Smell of rotten eggs

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