The fuel system in a vehicle is responsible for storing and delivering fuel to the engine. It typically includes components such as the fuel tank, fuel pump, fuel filter, and fuel injectors. The system ensures that the right amount of fuel is supplied for combustion, which is essential for the engine to run efficiently. In modern vehicles, the fuel system is often designed to work with various types of fuel, including gasoline and diesel. Proper maintenance of the fuel system is crucial, as clogged filters or malfunctioning pumps can lead to poor engine performance and increased emissions.