Revision question · Safety and your motorcycle

What does a catalytic converter reduce?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

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Exhaust noise

Fuel consumption

Exhaust emissions

Engine noise

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Exhaust emissionsThis was the right answer

Catalytic converters reduce the toxic and polluting gases given out by the engine. Never use leaded or lead-replacement petrol in a motorcycle with a catalytic converter; even one tankful can permanently damage the system.

Reviewed reading for this question

The catalytic converter in the exhaustReviewed guidance summary · The catalytic converter reduces harmful exhaust emissions; fuel compatibility follows the motorcycle handbook.

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