Prentice Upgrades Bus Fleet with Allison xFE™ Transmissions

xFE™ technology gives smoother drive and greater fuel economy.

AMPTHILL, UK, June 27th 2023 – Multi-award-winning Scottish bus and coach operator Prentice of Haddington has installed Allison xFE™ fully automatic transmissions into several of its ADL Enviro 200 buses.

The buses’ standard automated manual transmissions (AMTs) have been upgraded to Allison fully automatic xFE transmissions in a bid to save costs over the remaining life of the vehicles and enhance the travelling experience for drivers and passengers. The upgrades began in January 2023 after the East Lothian-based company learned of savings gained by other British bus fleets who adopted the technology.

“We prefer Allison because their transmissions are very smooth, relatively simple, nice and easy for drivers to use and give us very little trouble,” said Ross Prentice, Owner and Managing Director, Prentice of Haddington. “We’d been wanting to move this current fleet over to fully automatics for some time, and we’d heard about the fuel economy advantages of the xFE range. Since switching, we’ve noticed a substantial improvement in fuel consumption of around one mile per gallon compared to when the vehicles were fitted with the AMTs.”

“There have been other benefits, too. The buses are much smoother and easier to drive,” said Prentice. “It’s like driving an automatic car, which makes a big difference, particularly in stop-start traffic. Anything we can do to make life easier for our drivers is better for everyone.”

Prentice also anticipates the working life of the vehicles will extend beyond the current duration of around 15 years because of the replacement with new, exceptionally durable xFE transmissions. The buses were previously upgraded to the Euro 6 emissions standard using funding from Transport for Scotland, and the company is keen to keep them operational for as long as possible.

“Buses operating in both traffic-dense city routes and lower speed rural routes present special challenges for any transmission, but they’re ideal applications for our xFE technology,” said Jade Noble, Allison Transmission OEM Account Manager and Area Sales Manager, UK and Ireland. “As well as helping operators to reduce emissions and squeeze more value from every tank of fuel, xFE provides all the performance, reliability, durability and productivity they’ve come to expect from Allison.”

xFE transmissions are designed to lock up at lower speeds, specifically for the constant gear shifting and lower average speeds of bus fleets. This means lock-up happens significantly earlier and vehicles run longer where they are most efficient, producing exceptional fuel savings and vehicle handling.

Founded in 1991, Prentice has developed a reputation for providing customers with modern vehicles presented in immaculate condition, with friendly, knowledgeable and skilled drivers. Over 50% of its service buses are also certified as “Low Emission Buses”, meaning they have among the lowest emissions of any vehicle in the UK.

Jun 28, 2023


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 approximately 1,600 independent distributor and dealer locations worldwide. For more information, visit