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The Definitive Guide to Saving Money on Fuel Costs for Your Fleet

 

Since fuel costs typically represent more than two-thirds of school bus fleet’s annual operating expenses, it’s important to understand how to accurately estimate total fuel costs for your fleet. Doing so not only will enable you to budget more accurately for the year but also will allow you to make important purchasing decisions for your fleet based on products that help reduce your overall fuel cost.

Fuel costs ebb and flow, which is why it’s important to remember not to consider fuel costs at face value. To get a clear picture of the true cost to fuel a school bus, you also must consider fuel economy and fuel efficiency. The more efficient an engine is, the less fuel it burns and the further it travels on a single gallon of fuel. So, even if one type of fuel is less expensive per diesel gallon equivalent (DGE), the efficiency of that fuel may negate the savings.

Here’s how to calculate fuel costs for your fleet given the face value of fuel plus fuel economy.

Doing the Math

Step 1 – Determine your fuel economy.

  1. Multiply the amount of fuel used by 100.
  2. Divide that number by the total miles driven.

Here’s a real-life example.

Thomas Built Buses Saf-T-Liner C2

  1. 60 gallons of fuel used x 100 = 6,000
  2. 6,000 / 705.8 miles driven = 8.5 miles per gallon fuel economy

Step 2 – Calculate total fuel cost.

  1. Take your total mileage per year and divide by your fuel economy to determine the number of gallons of fuel needed per year.
  2. Multiply the number of gallons needed per year by the total cost per gallon of fuel or DGE to get your approximate cost of fuel for the year.

Here’s a real-life example using the same Thomas Built Buses Saf-T-Liner C2

  1. 12,000 miles driven per year / 8.5 miles per gallon = 1,410 gallons of fuel needed per year
  2. 1,410 gallons x $3.07 per gallon* = $4,328.70*national average on 3/6/19

A diesel school bus that travels 8.5 miles per gallon will cost approximately $4,328.70 to fuel for the year. Driving style, weather and road conditions may affect these figures somewhat.

Why Does this Matter?

Fuel economy is one of the key misleading indicators when it comes to costing out a school bus, particularly those that are fueled by alternative fuels or gasoline. While gasoline costs per gallon typically are lower than those of clean-diesel, gasoline is less efficient compared to diesel. On average, a clean-diesel school bus can travel about 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks. Newer engines, like the Detroit™ DD5™ and DD8™ diesel engines, show an additional three percent increase in fuel efficiency. This difference in range and fuel economy quickly mitigates the cost difference between gasoline and diesel fuel.

Let’s look at that on paper.

Fuel Efficiency Chart

As you can see, even though clean-diesel costs more than gasoline per gallon, it outperforms other fuel types in operating range and overall costs, based on how efficient the fuel is.

Diesel always has been and remains the most fuel-efficient engine (due to more BTUs), providing nearly 90 percent better fuel economy and a longer operating range than any other similar-sized gasoline, propane or compressed natural gas (CNG) engines. Plus, new technologies and innovations, like the Detroit DD5 engine can help you achieve even greater fuel economy and lower fuel costs down the road.

To learn more, contact your local Thomas Built dealer to discuss your fleet’s needs and how you can lower the fueling costs for your fleet.

Stretch Your Transportation Budget With Clean-Diesel School Buses

It’s an ongoing debate: which fuel type provides the lowest total cost of ownership (TCO) to districts. Opinions abound on all sides of the issue.

A gasoline-powered bus has a low initial purchase price, propane fuel costs much less than clean-diesel and, while compressed natural gas (CNG) buses have a high initial purchase price, advocates contend that, after the initial cost is recouped, the savings on CNG fuel contribute to a low total cost of ownership.

 But which is correct? The problem with determining the total cost of ownership of any fuel type for a bus is that, in most cases, not all factors are considered. This creates one-sided arguments and speculations. But when all factors are considered, clean-diesel provides the lowest total cost of ownership over the lifetime of a bus. Here’s why.

Fuel Cost

The more efficient the engine, the less fuel it burns and the further it travels on a single gallon of fuel. So even if one type of fuel is less expensive per gallon-equivalent (like gasoline or propane), the efficiency of that engine type may negate the savings.

Clean-diesel is the most energy-efficient fuel type, which means that it outperforms other fuels in operating range and fuel economy per gallon of fuel. On average, a clean-diesel school bus can travel approximately 510 miles on a tank of diesel vs. only 270 miles on gasoline, based on the same standard-sized fuel tanks. Newer engines, like the Detroit™ DD5™ and DD8™ diesel engines, show an additional three percent increase in fuel efficiency. This difference in range and fuel economy quickly mitigates the cost difference between gasoline and diesel fuel.

Diesel always has been and remains the most fuel-efficient engine (due to more BTUs), providing nearly 90 percent better fuel economy and a longer operating range than any other similar-sized gasoline, propane or compressed natural gas (CNG) engines. Plus, new technologies and innovations like the Detroit DD5 engine can help you achieve even greater fuel economy and lower fuel costs down the road.

Maintenance

Diesel engines are longer-lasting, durable, reliable and hard-working.  With a clean-diesel school bus, not only will you have peace of mind with reliable buses on the road, you’ll also save money on maintenance costs.  Today’s clean-diesel engines, like the Detroit DD5 and DD8, offer the longest service intervals in the industry with up to 45,000-mile* oil and fuel filter change intervals, which means lower ongoing maintenance costs. Plus, with new engine technology, aftertreatment issues are now a thing of the past.

Diesel engines last 15- 20 years, two to three times longer than their propane and gasoline counterparts.  Even with a lower acquisition cost, most districts will have to replace their propane or gasoline engines several times during the life of the bus. Again, once all factors are considered, diesel comes out on top.

Capital Cost and Resale Values

The capital cost of a school bus is the most prominent aspect of the total cost of ownership equation. Many fleets select the cheapest bus without weighing the cost of owning that bus down the road or selling it at the end of its lifecycle. In the long run, the lowest initial cost option may not be the most cost-efficient overall.

For instance, there are vast differences in the resale value of school buses. Clean-diesel has the highest resale value in the market today. The large resale market for clean-diesel just doesn’t exist for gasoline, propane or compressed natural gas-powered buses.

It’s important to weigh the pros and cons of a specific fuel type based on your unique needs. And it is just as important to consider every aspect of the total cost of ownership to make the best decision. When all factors are considered, clean-diesel has the lowest total cost of ownership for a fleet.

When examining the TCO of your school bus purchases, challenge past assumptions, ask tough questions and keep an open mind. You may be surprised by what you learn.

*Or 12 months or 1,500 hours, whichever comes first.