Become a member
Log in
Prov Tests Prov
The Licence Game
The Road Signs Game
Licence theory
The road to your licence
Road signs
Find a traffic school
Gift vouchers

Common theory questions

What is the function of the catalytic converter?

Catalytic converters purify about 80-95% of the harmful substances in exhaust emissions, converting them to carbon dioxide and water.

Catalytic converters do not reduce carbon dioxide emissions. The only way to reduce these is by decreasing fuel consumption.