Allison Transmission makes technical delivery of the first series-produced automatic OF 1721 buses for an urban transportation company in Rio

Five Mercedes-Benz OF 1721 buses featuring Allison automatic transmissions were delivered to the urban transportation company in Rio de Janeiro, the Auto Viação Tres Amigos. These are the first units produced by the German company in Brazil.

SAO PAULO, BRAZIL - Allison Transmission was present at the technical delivery of the first five automatic OF 1721 buses equipped with Allison 3000 Series™ transmissions manufactured by Mercedes-Benz for the Auto Viação Tres Amigos. They are part of the first of ten units acquired by a group from Rio that owns Auto Viação Três Amigos, among others. The second set of five vehicles is for Auto Viação Santo Antonio and Expresso Garcia companies. The Tres Amigos has a fleet of 172 conventional buses and 27 articulated for the Bus Rapid Transport (BRT).

The experience of the companies with two automatic prototypes built in 2010, already in partnership with Allison, was essential for the decision to purchase the new OF 1721. These prototypes have run over 1.1 million kilometers without any problems. The ten units by Mercedes-Benz were the first in the series produced with front-engine and Allison automatic transmissions.

“These new automatic buses will be put into circulation on one of our main lines in terms of topography, distance and loading,” said Claudio Marcelo Ferreira, Managing Director of Três Amigos. “This is the line 355, from Madureira to Tiradentes Square, 58 km long, where buses run an average of 250 km daily in two shifts. Therefore, it is one of the busiest routes in the city and one of the most suitable for the robustness of automatic transmissions.”

Among the advantages of Allison AutomaticsTM that the company lists is higher productivity. This is a result of faster acceleration and faster cruising, with less noise in the cabin as shifting takes place at lower engine speeds and smoother operation due to the lack of bumps during shifting.

Drivers of the new vehicles are also receiving Allison-specific training for the most efficient bus operation in terms of performance and fuel consumption rates. This is important because the company control indicates that diesel costs account for over 30% of fleet operation costs.

“In terms of vehicle maintenance and uptime, Allison Automatics will also bring the company big savings. In our journeys, a bus with a manual transmission requires clutch system replacement after 60,000 to 70,000 kilometers, a fact that should never occur with the new automatic vehicles of the fleet,” said Ferreira.

“We have very high expectations for these upcoming buses. In addition to automatic transmissions, they have air suspension, which also contributes to greater passenger comfort,” said Ferreira. “We will do our utmost to ensure that they are correctly operated and this

investment guarantees us a good differentiation from other transportation companies. There is a lot of competition.”

Caio Moraes/Rodolpho Siqueira 
Press Consultoria Ltda. 
(+55 11) 99245-7177 

São Paulo, Brazil 

Juliana Abrahão de Barros Ranieri
Allison Transmission
(+55 11) 5633-2528
São Paulo, Brazil

Nov 07, 2019


Allison Transmission (NYSE: ALSN) is a leading designer and manufacturer of vehicle propulsion solutions for commercial and defense vehicles, the largest global manufacturer of medium- and heavy-duty fully automatic transmissions, and a leader in electrified propulsion systems that Improve the Way the World Works. Allison products are used in a wide variety of applications, including on-highway trucks (distribution, refuse, construction, fire and emergency), buses (school, transit and coach), motorhomes, off-highway vehicles and equipment (energy, mining and construction applications) and defense vehicles (tactical wheeled and tracked). Founded in 1915, the company is headquartered in Indianapolis, Indiana, USA. With a presence in more than 150 countries, Allison has regional headquarters in the Netherlands, China and Brazil, manufacturing facilities in the USA, Hungary and India, as well as global engineering resources, including electrification engineering centers in Indianapolis, Indiana, Auburn Hills, Michigan and London in the United Kingdom. Allison also has more than 1,400 independent distributor and dealer locations worldwide. For more information, visit