A turbocharger is a device that increases an engine's efficiency and power output by forcing more air into the combustion chamber. It uses exhaust gases from the engine to spin a turbine, which then compresses incoming air. This process allows the engine to burn more fuel and produce more power without significantly increasing its size. Turbochargers are commonly found in many modern vehicles, including cars and trucks, as well as in some aircraft engines. They help improve fuel economy and reduce emissions while enhancing performance. Popular automotive brands like Ford and Volkswagen often incorporate turbochargers in their engine designs.