Horse Powertrain Debuts REX and Hydrogen at Busworld 2025
Horse Powertrain, a leader in innovative low-emission powertrain systems, showcases through Horse Technologies a suite of range extender and combustion powertrains at Busworld Europe 2025.
The Horse M20 Hydrogen system seamlessly integrates into existing vehicle architectures, enabling the development of low-emission, alternative-fuel commercial vehicles. Derived from a proven Horse Powertrain 2.0-litre, four-cylinder turbo-diesel engine, the M20 Hydrogen delivers up to 90 kW and 300 Nm. It meets upcoming Euro 7 nitrogen oxide standards and produces less than one gram of CO2 per kilometre driven, supporting the adoption of hydrogen engines in heavy-duty transport.
Three new range extender systems go on display. The Horse H10 REX delivers 70 kW of continuous electric power from a 1.0-litre, three-cylinder petrol or ethanol combustion engine. The system supports electrical architectures up to 800 V, enabling fast charging. Fitted to a Marcopolo Volare Attack 9 Hybrid microbus with a 450 km range, the technology is on display for attendees to see. The engine functions as an energy generator, enabling the vehicle to operate within its peak window for longer, thereby increasing efficiency and reducing emissions in hybrid buses.
The Horse M20 REX, a 2.0-litre, four-cylinder internal combustion engine with generator, produces 105 kW of continuous electrical power for larger commercial vehicles. Its power and durability increase range and operational flexibility for buses and coaches that travel greater distances.
Also on the stand, the Horse K15 REX integrates a 1.5-litre, four-cylinder internal combustion engine with a generator, providing 65 kW of continuous electrical power and a maximum output of 80 kW, thereby expanding the range extender portfolio for coach and bus fleets.
Matias Giannini, Chief Executive Officer at Horse Powertrain, said: “We are pleased to be working with Marcopolo to showcase our market-leading systems within a bus engine platform. This technology will enable buses and coaches worldwide to provide reliable and resilient services, supporting the global transition to net zero. At Horse Powertrain, we believe that there are many roads to net zero and that the use of hybrid technology in the bus sector will be key to reaching these goals.”
Patrice Haettel, CEO at Horse Technologies, added: "Our strength lies in our ability to deliver cutting-edge, flexible, high-performance technological solutions, such as our REX, hybrid and H2 systems, that meet the needs and regulations of regions around the world. The bus sector is a clear example of our technology in action. Hybrid technologies and range-extended systems are key players in advancing towards technological neutrality in the transport sector, especially in regions where charging infrastructure is not yet fully developed. We combine efficiency, reliability and industrial leadership, helping to make the global mobility transition possible.”
Range extender systems function as generators, enabling a vehicle to operate over longer distances without relying solely on battery capacity, thereby increasing long-distance autonomy and operational flexibility for commercial vehicles.
Horse Powertrain showcases its full range at Stand 705A, Hall 7, at Busworld Europe 2025, taking place from 4 to 9 October 2025 at Brussels Expo, Belgium, thereby reinforcing its position in hybrid powertrains and hydrogen solutions for public transport.
Marcopolo, a leading Brazilian bus, coach and rail manufacturer that specialises in producing bus bodies across 120 countries, plans to integrate Horse Powertrain systems into its buses worldwide, with the first, the Volare Attack 9 Hybrid, scheduled for launch in 2026.
Horse Powertrain demonstrates how its technology benefits the bus and coach industry across global markets. These systems provide a practical step from pure internal combustion to electric vehicles, allowing regions with less developed charging infrastructure to transition towards electrification while delivering progress on the road to net zero.