What is an advantage of using diesel fuel compared to gasoline?

Choosing diesel fuel has several benefits, and one of the most significant is its higher energy density. Diesel fuel contains more energy per unit volume compared to gasoline, which means that engines that run on diesel can extract more energy from a given amount of fuel. This higher energy content generally translates into better fuel economy, allowing diesel engines to travel further on the same quantity of fuel compared to gasoline engines.

This advantage is particularly relevant for applications that require high torque and power, such as marine engines or heavy-duty vehicles, where efficiency and longevity are crucial factors. Diesel engines typically operate at a higher compression ratio, contributing to their ability to convert more of the fuel's energy into usable power.

In other contexts, while diesel fuel can indeed burn cleaner than gasoline in certain conditions, and sometimes has a lower cost depending on regional markets, these factors do not surpass the substantial benefit of energy density regarding efficiency. Furthermore, while some diesel engines may utilize different fuel delivery systems compared to gasoline engines, the claim that diesel does not require a fuel pump is misleading; diesel engines typically use a fuel pump as well, albeit of a different type. Therefore, the correct choice emphasizes the efficiency and fuel economy resultant from diesel's higher energy density.