Executive buses average 6 miles per gallon, especially when it comes to larger models that carry 45 to 51 passengers. Newer, high-tech models may get up to 10 to 12 miles per gallon. The larger the bus, the lower the average mileage.
Diesel. Among other types of fuel transport vehicles use, diesel fuel is a popular choice for those working with larger-capacity vehicles such as buses, vans, trucks, and boats.