Do buses use diesel engines?

Diesel powers over 90% of all school buses thanks to its combination of fuel safety, energy efficiency, reliability, durability, established fueling and maintenance network, range and operational flexibility, secondary markets and low acquisition and operating costs.



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A diesel engine requires less fuel to produce the same output as a gas engine. A conventional gas engine operates via a spark ignition system, which burns more fuel than a diesel engine's combustion system. As a result, diesel buses are more fuel-efficient per gallon and burn less fuel while idling.

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OUR GREENER BUSES Depending on location, our engines can run on either clean-burning low-sulfur, Bio, or Renewable diesel fuel.

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The vast majority of buses run on diesel fuel, because it is more economical than gasoline, and because diesel engines ordinarily last longer than gasoline engines. Some older buses still in use do run on gasoline.

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Over the long haul, newer diesel engines will last 15-20 years in a fleet, while a gasoline engine may need to be replaced once or even twice during the life of a school bus. “All of these are important for fleet managers to stop and consider when choosing a new school bus,” says Hedgecock.

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How Much MPG Does a School Bus Get? Admittedly, the average school bus's fuel economy is what you'd expect of a bus—not great. According to the Alternative Fuels Data Center, school buses get an average fuel economy of just 6.02 miles per gallon (MPG).

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(Jan. 19, 2021) — This spring, Blue Bird will begin production of its propane and gasoline Vision school buses integrating Ford's all-new 7.3L V8 engine and a purpose-built fuel system designed specifically for school-bus application.

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Diesel powers over 90% of all school buses thanks to its combination of fuel safety, energy efficiency, reliability, durability, established fueling and maintenance network, range and operational flexibility, secondary markets and low acquisition and operating costs.

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Matter of fact, turbos have widely been used on diesel engines for a while now. Especially to improve power output while sticking to lower displacements. This includes buses and trucks as well.

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When specifying engines for your buses, you will notice that the engine rating has two numbers: horsepower (200, 220, 240, 260 etc.) and torque (520, 540, 600, 660 etc.). While these are related to one another, various applications have different needs in terms of the power or torque that are required.

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The United States. In general, most American transit systems expect their buses to have a useful life of 12 years and 250,000 miles. This time frame is due to the fact that, after their buses have been around for 12 years, they are eligible to receive replacement bus funding from the federal government.

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Period. Why? Diesel is the most fuel-efficient engine type on the market. Diesel outperforms other fuels in operating range.

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