Theory test

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Which statement is true regarding catalytic converters?

  • Incorrect: They only filter out 1–2% of the harmful substances produced by the car.
  • Incorrect: They are forbidden on all cars manufactured after 31 December 2015.
  • Correct: They do not reduce carbon dioxide emissions.
  • Incorrect: They are very expensive, which means that many newer cars do not have them.

The catalytic converter turns [...] into mainly carbon dioxide and water. The carbon dioxide emissions is a problem that can currently only be solved through a reduced fuel consumption.” (Driving Licence Book, 19th Edition, page 225)


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