A diesel bus will get around 8-12 mpg. A gas shuttle might get 6-18 mpg, really depends on the engine, weight, and the hills. Diesel used to be a lot cheaper to run. you could literally get 10 mpg with a diesel pusher and 5 with a gas v10.
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Diesel school buses are already the most fuel-efficient in the industry, due to a higher BTU count compared to other fuels, providing better fuel economy and a longer operating range compared to similar-sized gasoline, propane or compressed natural gas (CNG) engines.
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.
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.
Public transportation gets people where they're going while emitting far fewer climate-warming greenhouse gases than private cars. The reason is simple efficiency: while cars usually carry just one or two people at a time, a bus can carry 50 or more, and a train in a large city may carry thousands.
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.
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.
“A typical passenger car carrying one person gets 25 passenger miles per gallon, while a conventional bus at its capacity of 70 (seated and standing) gets 163 passenger miles per gallon.” So the claim : A full bus (70 people) is 6.5 times more fuel efficient then a car.
“On average, most fleets are getting around 9.45 miles per gallon, which is a one to three mile per gallon improvement over older diesel engines. This savings is particularly impactful when you look at special-needs buses that idle a lot.
If we evaluate the lifecycle carbon emissions for an electric school bus with an energy efficiency of 2 kWh/mile and a nominal propane school bus fuel economy of 4.5 MPG, the propane autogas bus has a lower lifetime carbon footprint in 15 states when average (baseload) electrical grid emissions are considered and in 35 ...
The Thomas C2's overall average mileage for the four test segments was 9.2 miles per gallon; competitor product's overall average was 7.6 miles per gallon.