Folks are often distracted by the cost-differential between regular unleaded gasoline and diesel fuel. I can’t count the number of times I’ve heard variations of the same question, “how can you justify buying a diesel-powered car with the 30 cent difference between diesel and gasoline?”
Diesel engines can be as much as 30% more fuel efficient than the equivalent gasoline engine. The cost-differential between diesel fuel and regular unleaded varies depending on factors that include seasonal fluctuations, geographic location, and market demand.
So how do diesel cars save money over their gasoline engine counterparts, when diesel fuel is more expensive than regular unleaded gasoline?