Why is ethanol used as a fuel?

Ethanol is used as a fuel for a few key reasons. Primarily, it is a renewable resource. We produce it from crops like corn, wheat, or sugar beets, which is a clear advantage over finite fossil fuels. It also burns more cleanly than pure petrol. This means it can reduce certain harmful emissions, like carbon monoxide. Furthermore, ethanol is an excellent octane booster. When blended with gasoline, it helps prevent engine knocking and can improve performance. It is a practical way for countries to support agriculture and increase their energy independence.