A fuel tank is a container designed to store fuel for vehicles, machinery, or equipment. It is typically made from materials like metal or plastic and is built to withstand pressure and prevent leaks. Fuel tanks come in various shapes and sizes, depending on their intended use, such as in cars, airplanes, or generators. Fuel tanks are essential for the operation of internal combustion engines, as they supply the necessary fuel for combustion. They often include features like fuel gauges to monitor levels and safety mechanisms to prevent overfilling or spills. Proper maintenance of a fuel tank is crucial for safety and efficiency.