Allison Transmission is a leading global supplier of commercial-duty fully automatic coach 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 (“Allison Automatics”) for coaches. From smooth shifting and excellent fuel economy to proven durability, Allison has worked consistently to design and build transmissions to equip the world’s finest coaches.

See how the numerous features of Allison Automatics help provide safe, efficient and economical transport for coach passengers around the world.

Coach bus equipped with an Allison transmission.
Greyhound coach bus equipped with an Allison transmission.
Person operating on an Allison transmission.

Experience the Benefits

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

Superior comfort and safety

When it comes to operating a fleet of coaches, there’s nothing more important than delivering your passengers and cargo to their destination. We concentrate on supplying transmissions that provide safety and comfort with seamless shifts. 

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, seamless 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.

Improved maneuverability and shorter route times

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 coach. This is especially important in heavy traffic situations and narrow roadways when maneuvering ease is critical.

The smooth, seamless power also results in higher coach efficiency. This means higher average speeds and shorter route times to meet schedules.

Lower costs, easier maintenance

Allison transmissions are known for their reliability. This means keeping your Allison-equipped coaches on the road and in service.

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

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

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 productivity, lower fuel consumption, reduce maintenance costs and improve overall coach 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, we offer several models tailored to different requirements. This gives you ultimate control over features and performance. When it comes to coaches, Allison transmissions are designed to provide smooth shifting, improved fuel efficiency and proven durability – 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. Information and specifications subject to change without notice or obligation. Please check with your vehicle salesperson to ensure offerings.

Model Ratio Max Input Power - kW (HP) 1 Max Input Torque - Nm 1 Max GVW - kg  Max GCW - kg   
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 26000  
T325 Close Ratio 220 (295) 1200 27000  
T350 Close Ratio 242 (325) 1350 27000  
T375 Close Ratio 268 (360) 1450 27000  
T425 Close Ratio 283 (380) 1750 27000  
T450 Close Ratio 373 (500) 2100 27000  
T525 Close Ratio 410 (550) 2305    
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 T525 10002100 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 on how Allison Automatics are playing key roles in the success of coach fleets.

One of Singapore’s largest coach operators, Tong Tar Transport Service, has made a major shift in its bus operations with the introduction of the first buses equipped with Allison fully automatic transmissions in the company’s 44-year history. Recent advances in automatic transmission technology and associated electronics convinced Tong Tar to try Allison-equipped buses, which were found to be equal to manual buses in fuel efficiency and gear change control.
"The reliability of the Allison-equipped coaches has been excellent, and while we haven’t done any definitive comparisons in fuel consumption, they are certainly not using any more fuel than our manuals. We will definitely be looking to move our entire fleet to automatic transmissions, as a result of our experience with these new Allison-equipped buses."

–Philip Peh, direttore generale della Tong Tar Transport Service (Singapore)