home icon

This isn't your father's diesel.

Diesel school buses aren’t what they used to be 10 to 15 years ago. They’re better. Today’s clean-diesel is the best long-term solution for most districts, delivering proven reliability, decreased maintenance, cost savings and the lowest carbon footprint over the operational lifetime of a bus.

Diesel is proven.

The majority of school districts across the United States and Canada still prefer diesel as the fuel of choice for their fleet. And for good reason.

  • Technicians already know how to service a diesel engine and, with new regen / aftertreatment solutions and remote diagnostic tools, their jobs just got easier
  • Diesel engines are longer-lasting, durable, reliable and hard-working
  • Diesel engines last 15-20 years— two or three times longer than their propane and gasoline counterparts
  • Diesel engines don’t need to be upfitted for alternative fuel or replaced multiple times during their lifecyle

Diesel is clean.

Alternative fuels are not always cleaner than diesel. In fact, modern diesel school buses are just as clean—if not cleaner than—other fuel types, based on EPA regulated emissions standards.

  • Clean-diesel emissions are more than 90 percent cleaner than they were in 2006
  • Diesel offers the lowest carbon footprint— smaller than gasoline and propane—over the operational lifetime of the bus
  • Thomas Built Buses diesel buses exceed EPA and greenhouse gas standards for particulate matter, nitrogen oxide and carbon monoxide
  • New state-of-the-art engine technology, like that in the Detroit™ DD5™ and DD8™, is revolutionizing emissions

Diesel is cost-effective.

With a low acquisition cost and high efficiency, engine durability and resale value, diesel helps school bus budgets go further.

  • Today’s clean-diesel engines, like the Detroit DD5 and DD8 engines, offer the longest service intervals in the industry, with up to 45,000-mile* oil and fuel filter change intervals for lower maintenance costs
  • Diesel is the most fuel-efficient engine on the market, delivering up to 50% better fuel economy compared to other similar-size gasoline, propane or compressed natural gas engines**
  • With diesel, there are no logistical issues or fueling upgrades required for switching to another fuel
  • The resale market for diesel is stronger than other fuel choices
  • Diesel outperforms other fuels in operating range and fuel economy
  • Diesel has a total cost of ownership lower than other alternative fuels

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

**Based on usage, mileage, terrain or other factors.

Diesel is innovative.

Built from a clean-sheet design, the new Detroit DD5 and DD8 engines were purpose-built for stop-and-go operations and specifically designed for the medium-duty market. Bottom line: these innovative engines are perfect for school buses because of their duty cycle, serviceability and performance.

  • The Detroit DD5 and DD8 engines represent the best in fuel efficiency, durability, reliability and serviceability, with the most advanced connectivity platform in the industry
  • State-of-the-art engine technologies like variable cam phasing help improve the performance and efficiency of the aftertreatment system and provide industry leading emissions reductions

Contact your local dealer to explore the pros and cons of each fuel type for your fleet.

Sign Up and Receive Our Newsletter