An exhaust system is a series of pipes and components in a vehicle that directs exhaust gases away from the engine. It helps reduce harmful emissions and noise produced during combustion. Key parts of the exhaust system include the catalytic converter, muffler, and exhaust pipes. The catalytic converter transforms toxic gases into less harmful substances before they exit the vehicle. The muffler minimizes noise, ensuring a quieter ride. Overall, the exhaust system plays a crucial role in maintaining vehicle performance and meeting environmental standards.