Bus MPG by Type: School, Coach, Shuttle, Charter, and City Buses

Bus MPG varies widely depending on the type of bus, its size, passenger capacity, route conditions, and fuel type. For example, smaller shuttle buses can average 15 to 20 MPG, while larger city buses and articulated buses often get less than 6 MPG. Knowing the typical MPG range for your type of bus can help you benchmark performance, identify fuel efficiency issues, and better control fuel costs.

In this guide, we'll break down the average MPG for different types of buses, including school buses, charter buses, coach buses, shuttle buses, and city buses. We'll also explain the factors that affect bus fuel economy and show you how to track MPG across your fleet using fuel cards and telematics systems.

What Is the MPG for Different Types of Buses?

Here is the average MPG for different buses:

How to Track MPG for Your Company Buses

Tracking MPG is important for bus fleets because a sudden drop in fuel economy can be a sign of poor vehicle performance, fuel theft, fraud, excessive idling, or inefficient driving habits. There are two common ways bus companies track MPG across their fleets.

1. Use a Fleet Card to Capture Odometer Readings

Many fleet fuel cards require drivers to enter the vehicle's odometer reading before completing a fuel purchase. The fuel card system combines the odometer reading with the gallons purchased to calculate MPG between fill-ups.

This information is automatically included in fuel card reports and invoices, allowing fleet managers to monitor fuel economy by vehicle over time. If a bus begins showing unusually low MPG, it may indicate incorrect odometer entries, fuel theft, mechanical issues, or driver behavior that needs to be addressed.

2. Use a Fleet Telematics System

Fleet telematics and GPS platforms can track MPG automatically by collecting data directly from the vehicle. Most systems use a device connected to the vehicle's onboard diagnostics system or engine computer to capture fuel consumption and vehicle performance data in real time.

In addition to MPG, telematics platforms can provide insights into idling, hard braking, rapid acceleration, speeding, and other driving behaviors that affect fuel economy. This gives fleet managers a more complete picture of why fuel efficiency may be improving or declining across the fleet.

Factors That Affect Bus MPG

Vehicle Size & Weight

One of the biggest factors affecting a bus’s fuel economy is its size and weight. Larger buses that carry more passengers generally get lower MPG than smaller buses because they require larger engines which  use more fuel to move the additional weight.

For example, a full-size school bus that seats around 72 passengers typically averages between 6 and 10 miles per gallon. Smaller shuttle buses used for airport, hotel, or corporate transportation often achieve 15 to 20 miles per gallon. Because school buses are larger, heavier, and have bigger engines designed to carry more passengers, they take more fuel to accelerate, climb hills, and maintain speed, resulting in lower fuel efficiency than smaller bus types.

Vehicle Age & Maintenance

Another factor that can impact MPG is the age and maintenance history of the bus. Older buses tend to have lower MPG compared to newer ones because of wear and tear on the engine and other mechanical components. Regular fleet maintenance like oil changes, tune-ups, and tire replacements can help improve the  efficiency of older buses. Similarly, newer buses with modern engines and fuel-efficient technologies can achieve higher MPG than older models.

Fuel Type

The fuel type used in a bus can also affect its MPG. Charter buses may use alternative fuel sources such as compressed natural gas (CNG) or propane, but most buses run on diesel or biodiesel, which usually provides better fuel efficiency compared to gasoline. Diesel engines are also known to have higher torque and better power efficiency, which can help improve fuel economy. However, newer hybrid buses that use a combination of diesel and electric power can achieve even higher MPG than traditional diesel buses.

Driving Conditions

Driving conditions and routes also play a role in determining MPG bus efficiency. Buses that operate in urban areas with frequent stops and starts tend to have a lower MPG rating compared to buses that travel on highways. School buses usually operate on city and suburban roads with frequent stops. Stop-and-go traffic burns more fuel, resulting in lower school bus MPG. Charter buses usually operate on highways or long-distance routes, which can lead to improved fuel efficiency compared to buses that operate on city and suburban roads. A steady speed with fewer stops leads to better fuel efficiency. In contrast, elevated terrain can impact the fuel efficiency of a bus because of the increased power required to climb steep slopes. Route planning and optimizing driving routes can help reduce fuel consumption and improve the MPG of buses.

The average MPG for buses can vary depending on several factors, including the type of bus, its age, fuel type, and driving conditions. While larger buses tend to have lower MPG compared to smaller ones, newer buses with modern engines and fuel-efficient technologies can achieve higher MPG than older models. Regular maintenance and optimizing driving routes can help improve the fuel efficiency of buses, leading to cost savings and reduced environmental impact.

Types of Buses

Buses come in many different types, each having different purposes and features. Some of the most common types include:

• School Buses: These are designed to transport students to and from school and are also used for field trips and other educational activities. They feature large windows, ample seating capacity, and safety features such as stop signs and flashing lights.
• City Buses: City buses are used for public transportation within urban areas and typically feature low floors for easier boarding and disembarking, multiple doors for quick access, and space for standing passengers.
• Coach Buses: Coach buses are designed for long-distance travel and have comfortable seating, climate control, and amenities such as restrooms, entertainment systems, and overhead storage compartments.
• Charter Buses: Charter buses are a type of bus designed for transporting groups of people who are traveling long distances. Charter buses are generally larger and heavier than other buses, which can impact their fuel efficiency.
• Shuttle Buses: These buses are used for transporting passengers over short distances, such as an airport or hotel shuttles, and typically have a smaller seating capacity and minimal amenities.
• Tour Buses: These are used for sightseeing and group travel, and typically feature large windows, comfortable seating, and amenities such as restrooms and onboard entertainment systems.
• Double Decker Buses: Double decker buses feature two levels of seating which provide more capacity for passengers and are often used for sightseeing tours in urban areas.
• Articulated Buses: These feature a flexible middle section that allows the bus to bend and maneuver more easily on city streets, and are often used for public transportation in busy cities.
  
  

Start Using a Fuel Card to Track Your Bus MPG

If you're looking for a fuel card to help track bus MPG, check out the best fuel cards for bus companies in 2026. This guide compares fees, discounts, acceptance networks, features, and customer ratings for the top fleet fuel cards on the market.

Once you choose a fuel card, you can start collecting odometer readings and fuel purchase data to track MPG across your fleet.