What does a catalytic converter do?

A catalytic converter is an essential component of a vehicle's exhaust system that plays a critical role in reducing harmful emissions. It functions by facilitating chemical reactions that convert harmful pollutants produced during combustion, such as carbon monoxide, hydrocarbons, and nitrogen oxides, into less toxic substances like carbon dioxide and nitrogen. By promoting these reactions at high temperatures, catalytic converters help to significantly lower the amount of harmful emissions that are expelled into the atmosphere, thus contributing to a cleaner environment and complying with regulatory emission standards.

While other options may touch upon aspects of vehicle performance, they do not specifically highlight the primary purpose of a catalytic converter. Fuel efficiency, acceleration, and engine performance can be influenced by various engine and drivetrain components, but the catalytic converter's main function is expressly geared towards minimizing harmful exhaust emissions.