What pollutants from a car does a catalytic converter remove?

A catalytic converter removes several key pollutants from a car's exhaust, primarily carbon monoxide (CO), unburned hydrocarbons (HC), and nitrogen oxides (NOx). It converts these harmful substances into less harmful emissions, such as carbon dioxide (CO2), nitrogen (N2), and water vapor (H2O). By facilitating chemical reactions, the catalytic converter plays a crucial role in reducing the environmental impact of vehicle emissions.