thomas201 wrote:
All of the cost comparisons are flawed. None take into account the time value of money. I think Internal Rate of Return (aka Discounted Cashflow Rate of Return) is best. Net Present Value, is OK.
What you bought it for, what you sold it for, and every last cent you spent on the truck are needed, along with miles and duty cycle. This is the metric that companies use to determine gas or diesel for their fleets. And most light duty trucks are gas and heavy duty are diesel, with a gray area in the middle, for sound money reasons.
Nailed it. Modern diesels are desired for performance, not lower lifetime cost.
Proof? Look at how many fleet vehicles, from parcel delivery to 30k lbs school buses, are transitioning to gas. A business's only interest is cost, and many business managers have crunched the initial purchase + maintenance + fuel - resale math, gas must have came up on top.
We're enthusiasts, and can justify the pleasure of diesel performance against probability of a high pressure fuel system failure or $$$ emissions repair. A business can't.