Motor fuel refers to any substance that is burned to power an engine and propel a vehicle. There are various terms that can be used to refer to motor fuel, including petrol, gasoline, diesel, and fuel oil. In some cases, the specific type of fuel may be emphasized, such as high-octane gasoline, low-sulphur diesel, or aviation fuel. Other synonyms for motor fuel include liquid fuel, automotive fuel, and transportation fuel. While the term "motor fuel" is often used in a general sense, it is important to understand the specific type of fuel a vehicle requires to operate safely and efficiently.