Allison Transmission offers parallel hybrid architectures for a wide range of commercial vehicles, including transit and city buses and medium-duty trucks for distribution, refuse, utility and shuttle bus applications.

With thousands of Allison hybrid propulsion systems in operation worldwide, we are the world’s largest producer of hybrid systems for transit and city buses.

Unique Allison hybrid propulsion systems allow efficient regenerative braking and deliver reduced fuel consumption with fast and smooth acceleration. We provide the performance and reliability you need and the increased fuel economy and lower emissions you want.


Allison Transmission has been a pioneer in hybrid and electric propulsion systems since 1989 when we contributed to General Motors’ revolutionary electric car. From there, we integrated our electric vehicle experience with our commercial vehicle knowledge to create an Allison hybrid system for transit and city buses, which operates in hundreds of cities worldwide.

Allison hybrids are designed and engineered for full regenerative braking, higher performance and reduced emissions. From transit and city buses to medium-duty distribution, refuse and utility vehicles, Allison hybrids provide a smooth, efficient ride. And from fuel savings to environmental responsibility and efficiency, the benefits of an Allison hybrid add up to the perfect solution for your challenges.


For transit and city bus applications, Allison H 40/50 EP™ hybrid systems have proven to be some of the most dependable and efficient hybrid propulsion systems at work anywhere in the world. In full production since 2003 and now operating in thousands of buses around the world, the Allison hybrid systems offer up to 25% fuel savings depending on the duty cycle.