What function does a catalytic converter serve in a vehicle?

The function of a catalytic converter in a vehicle is to reduce harmful emissions. It is an essential component of a vehicle's exhaust system designed to convert toxic gases produced during the combustion process into less harmful substances. As exhaust gases pass through the catalytic converter, chemical reactions facilitated by catalysts—typically made from precious metals like platinum, palladium, and rhodium—convert nitrogen oxides, carbon monoxide, and unburned hydrocarbons into nitrogen, carbon dioxide, and water vapor. This transformation significantly decreases the vehicle's overall environmental impact, helping to meet regulatory emissions standards and contributing to cleaner air.

While other options may seem useful in enhancing vehicle performance or efficiency, they do not pertain to the primary role of a catalytic converter.