What is the most commonly used fuel for running an automobile engine?

The most commonly used fuel for running an automobile engine is gasoline. This fuel is favored for several reasons. Firstly, gasoline has a high energy density, allowing vehicles to travel longer distances on less fuel compared to other options. The availability of gasoline is also a significant factor; it is widely distributed across numerous fueling stations, making it easily accessible for consumers.

Additionally, gasoline engines tend to be less complex than diesel engines in terms of design, which can translate to lower manufacturing costs and lower maintenance requirements over the life of the vehicle. Furthermore, the infrastructure for gasoline fuel, including production, transportation, and refining, is well-established and efficient, further solidifying its position in the automotive industry.

While diesel, ethanol, and biodiesel are indeed used in various applications, they do not match the widespread use and convenience provided by gasoline in the majority of passenger vehicles. Diesel is often used in commercial trucks and some passenger vehicles, but it has a smaller market share compared to gasoline. Ethanol, although increasingly blended with gasoline, is less commonly used as a standalone fuel for vehicles. Biodiesel, while beneficial for reducing emissions, is also not as commonly utilized in passenger vehicles.