Opting for the fuel-efficient diesel version of some cars or trucks could save you a lot of money. Or not at all. Vincentric, a company that specializes in assessing total cost of ownership, just made those calculations, and found that diesels as a whole cost more over the long run (considering five years of ownership and 15,000 miles of driving per year) than the market-equivalent gasoline versions of the same model. http://www.csmonitor.com/Business/In-Gear/2014/1225/Five-vehicles-that-cost-less-to-own-as-diesels
Most diesel owners would say the torque and performance of the diesel is worth the extra cost. Improved mpg is only 1 benefit of diesel. Just like a Prius, there are reasons beyond cost to own.
