wing_zealot wrote:
ShinerBock wrote:
wing_zealot wrote:
Incomplete at best. You don't have insurance, repairs, depreciation, cost of money, ... just to name a few. You don't even accurately reflect the $10,000.00+ increase in initial cost of the diesel vs. gas to start with.
Repairs are null in 100k miles since all diesels on the market today have a 100k mile warranty from the factory. Insurance is within $5. Depreciation is factored in on resale. Cost of money is only a factor IF you paid cash and where going to invest that money. Most borrow the money. What else you got?
Also, as I have said in the past when I have posted this spreadsheet. These numbers are based on fuel cost, resale values, and so on in my region. Not everyone will be the same or can attain a 1.95% interest rate like I did. Hence the reason why I tell people to do the math for themselves and they will see that upfront cost $8k starts to decrease dramatically after everything is calculated. In fact, you pay way more than the upfront cost going from the 5.7L to the 6.4L gas in the long run due to higher maintenance costs yet no one talks about "recouping" their money there. Why is it only brought up on the diesel? It is an engine upgrade just like the diesel is it not?
You don't have to take my word for it, you can see the experts word for it based on real facts instead of incomplete and inaccurate conjecture.
Clicky
Vicentric aren't experts. We actually stopped using their subscription because their data models for budgeting never came near to what our actual 500+ truck fleet cost on an annual basis. On of these reasons is due to the fact that they only use 5 months of fuel pricing data(which it tells you in that link) and those five months just so happen to be mostly winter months when the cost difference between diesel and gas is much higher. My averages were done using the averages of a full year which is why you see a $.30 disparity between them. In fact, even this is too high since averaging the cost difference of 87 octane from my Jeep fill-ups and the cost of diesel from my car and truck on my app, I get an average difference of just $.26 for the full year.
For example, looking at Gasbuddy, the cost difference between 87 octane and diesel in my hometown is just $.11 cents. Vicentric uses somewhere around a $.50-.60 cents disparity for the full year which is false.


Their maintenance models were also way out of whack, because they used a standard mileage like 10k for diesels and 7,500 miles for gas engines instead of the manufacturers suggestions. For example, my truck is every 15k miles while the gas version is 8k miles. There are more inconsistencies, but these are the main reason why their costs models were way higher than actual and why we stopped using them for our fleet budgeting forecasts.
So what are you numbers of your truck versus the diesel version after 100k miles?