Question 395 · Car theory test
What is the purpose of a catalytic converter?
Pick an answer to test yourself.
Correct answer
It filters exhaust gases and reduces air pollution.
Official explanation
The purpose of a catalytic converter (CAT) is to remove toxic or polluting gases, such as carbon monoxide, nitrogen oxide, and unburned hydrocarbons, from the exhaust emissions. When the CAT is faulty, an engine management warning light illuminates on the dashboard, and drivers should seek advice from a competent person.
- Topic
- Vehicle maintenance
- Also in
- This question also appears in the motorcycle theory test.
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