Automotive fuels are substances used to power vehicles, primarily internal combustion engines. The most common types include gasoline, diesel, and ethanol. Gasoline is a refined petroleum product, while diesel is heavier and more energy-dense. Ethanol, often blended with gasoline, is a renewable fuel made from plant materials. In addition to these traditional fuels, alternative options like electricity and hydrogen are gaining popularity. Electric vehicles (EVs) use batteries to store energy, while hydrogen fuel cells convert hydrogen into electricity. These alternatives aim to reduce emissions and dependence on fossil fuels, contributing to a more sustainable transportation future.