In today’s world, where fuel prices are increasing as a consequence of spiraling demand and diminishing supply, you need to choose a cost effective fuel to meet your needs.
Thanks to the invention of Rudolph Diesel, the diesel engine has proved to be extremely efficient and cost effective. Diesel fuel is priced competitively versus gasoline and diesel has a higher energy density, i.e. more energy can be extracted from diesel as compared with the same volume of gasoline.
Therefore, diesel engines provide higher efficiency, making it an obvious choice for heavy-duty transportation and equipment. Diesel is heavier and oilier compared with gasoline, and has a boiling point higher than that of water. In short diesel engines more efficient and cost effective.