▼ MENU

Driving theory questions

What does a catalytic converter do?

  • The catalytic converter converts the harmful substances in the petrol into carbon dioxide and water through chemical reactions.
  • 80–95% of the harmful substances disappear.
  • The catalytic converter has a working temperature of 400-600°C, which means it takes a while before it works optimally.

Useful links:

Buy all 1,000 questions in English for car (category B)