Transit + City Bus

Allison Transmission is a leading global supplier of fully automatic bus transmissions. We are committed to providing maximum operating value, ease of operation and superior passenger safety and comfort.

Allison offers a complete range of fully automatic transmissions and hybrid propulsion systems for transit and city buses. From smooth shifting and excellent fuel economy to proven durability, Allison designs and builds transmissions for buses around the world.

See how the numerous features of fully automatic Allison transmissions (“Allison Automatics”) help provide safe, efficient and economical transport for bus passengers around the world.

Experience the Benefits

Allison Automatics are designed with features that improve passenger safety and comfort while delivering impressive fuel economy and proven reliability and durability.

Superior comfort and safety

When it comes to operating a fleet of city buses, there’s nothing more important than delivering your passengers to their destination, each and every day. We’re focused on supplying seamless-shifting transmissions that provide safety and comfort.

Without the distraction of manually changing gears, drivers are able to keep both hands on the wheel and focus on the traffic around them. While the smooth fully automatic shifting is safer, it’s also better for passenger comfort. With an Allison, there are no hesitations or jerks during gearshifts. The smooth acceleration and quiet operation ensure that passengers have a comfortable and relaxing ride.


Allison’s Continuous Power Technology™ allows our fully automatic transmissions to simply and smoothly deliver uninterrupted engine power to the wheels, letting the driver focus on handling and maneuvering the bus. This is especially important in heavy traffic situations and narrow roadways when maneuvering ease is critical. The smooth, seamless power also results in greater bus efficiency. This means shorter route times to meet stringent bus schedules.

 Lower costs, easier maintenance

Allison transmissions are known for performing reliably in tough duty cycles. This means keeping your Allison-equipped buses on the road and in service.

To take the guesswork and hassle out of scheduling routine vehicle maintenance, our Prognostics feature allows you to quickly monitor oil life, filter life and transmission health. This saves time and money while providing maximum protection for the transmission.

And if needed, our global network of service locations will provide the Allison authorized service you expect.

Better fuel efficiency

With an Allison Automatic, you can achieve an optimum level of fuel economy. Our transmissions offer several fuel-saving features that allow the transmission to shift at optimum points based on terrain, load and operating conditions. To reduce the impact of aggressive driving practices, Allison automatics can control the rate of vehicle acceleration and further conserve fuel.  And when the bus is stopped, the transmission automatically lowers fuel consumption by reducing the load on the engine.

Greater life cycle value

With transmissions, it comes down to overall value. When you factor in maintenance, operating costs and increased productivity, Allison Automatic-equipped buses create an advantage for our customers. Overall, our transmissions demonstrate a greater value across the life cycle of the bus.

Gear selector technology

Work Smarter

Allison Automatics have both intelligence and strength. We offer a number of Smart Controls – electronic control features that can help increase efficiency, lower fuel consumption, reduce maintenance costs and improve safety. Features include:

  • Adapting to conserve fuel by reducing load on the engine when a vehicle is stopped
  • Automatically selecting neutral when the parking brake is applied
  • Choosing the optimum shift points based on load and terrain
  • Limiting vehicle acceleration rate, when desired by the fleet, to control aggressive driving 
  • Enhancing braking with Allison’s ABS and EBS-compatible integral retarder

Models + Ratings

To meet the needs of our customers, Allison offers several models developed for different needs. This gives you ultimate control over features and performance. When it comes to bus fleets, Allison transmissions are designed to provide smooth shifting and improved fuel efficiency – all while making sure your passengers are safe and comfortable.

See the grid below to compare our transmissions and find the model that best fits your company’s needs.

Transit + City Bus
Model Ratio Max Input Power - kW (HP) 1 Max Input Torque - Nm 1 Max GVW - kg  Max GCW - kg  Reference Spec Sheet
1000 Close Ratio 149 (200) 705  7500 7500
2100 Close Ratio 172 (230) 705  13150 13150
T260 Close Ratio 157 (210) 750  19500  
T270 Close Ratio 179 (240) 900  24000  
T280 Close Ratio 194 (260) 1000 24000  
T310 Close Ratio 205 (275) 1100 28500  
T325 Close Ratio 213 (285) 1200 29000  
T350 Close Ratio 224 (300) 1254 29000  
T375 Close Ratio 268 (360) 1450 29000  
T425 Close Ratio 283 (380) 1650 29000  
T450 Close Ratio 298 (400) 1750 29000  
H40EP Hybrid CVT 209 (280) 1234 18182  
H50EP Hybrid CVT 246 (330) 1424 31818  

1Gross Ratings as defined by ISO1585 or SAEJ1995.

Specification Download

Please select the transmission series spec sheets you would like to download.
T260 T270 T280 T310 T325 T350 T375  T425 T450 1000 2100 H 40/50 EP

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Customer Profiles

We’ve told you why we think Allison Automatics are premium – now you can hear it straight from the customer.

Read this customer profile for more information about how Allison Automatics are playing key roles in the success of bus fleets everywhere.

Tohtetsu Bus uses the Allison-equipped Mitsubishi Fuso Aero Star buses. In Japan, this is the first adoption of a bus equipped with a fully automatic transmission on a high-speed route.
“The biggest reason for introducing the automatic transmission buses as high-speed buses was to improve riding comfort. If you actually operate the automatic transmission bus, you’ll find that it’s easier to drive because there’s no need to operate a clutch. As a result, driver fatigue is reduced, and we’re able to provide a safe, comfortable ride. I look forward to automatic transmission buses playing an active role in the future as well.”

––Keiichi Sato, Manager of Tohtetsu Bus (Kani, Gifu, Japan)