Commercial Vehicles

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The Challenge

Commercial vehicles run through cities where pollution and noise have the most significant impact on day to day life. Electrification and hybridization of these vehicles is driven by:

  • CO2 and Green-House-Gas (GHG) regulations
  • Government policies
  • The need to achieve fuel efficiency improvement
  • The desire to improve urban quality of life
  • The need to move away from oil dependency


Benefits for vehicle manufacturers

Tailor-made bus and trucks powertrains

TM4 SUMOTM  electric powertrains are optimized for medium-and heavy-duty electric and hybrid vehicles such as:

  • 6-18 meter buses
  • Delivery trucks
  • Municipal fleet work trucks
  • Shuttles and more

Cost-efficient electric powertrains

Proven technologies allowing simple integration, high efficiency and lower maintenance cost, available at mass production prices.

Direct-drive configuration allows for:

  • Higher efficiency, therefore reducing the need for battery capacity
  • Easier integration between the H beam of the truck or in the engine bay of the city bus
  • Better reliability: no need for a transmission
  • Lower maintenance
  • Faster ROI

TM4 – Your Electrification Partner

System manufacturer

Selecting a TM4 powertrain ensures optimized performances from the beginning without the compromises, costs and risks involved in a selection of components from different manufacturers.

Proven solution

TM4 SUMO systems have cumulated more than 350 million km on road.

Customer-centered approach

TM4 is at your side for the entire vehicle lifecycle.

Global presence for sales and support

A member of the Dana Incorporated family, TM4 is globally present with offices in more than 33 countries on 6 continents.

«With their superior efficiency, performance, competitive price and maintenance-free lifecycle, the TM4 SUMO powertrains are enabling our customers to get a faster ROI. »

Burak Onur, Technology Manager at TEMSA Global.



TM4 supplies auxiliary electric motors to Ballard Power Systems for its latest generation of FCvelocity®-HD7 fuel cell power module. Ballard’s modules have demonstrated exceptional reliability while clocking millions of kilometers on the road, principally in bus fleets.


TM4 worked with commercial vehicle manufacturer BMC for its new full electric Neocity bus. This 8,5m low floor EV bus features a TM4 SUMO MD electric powertrain system. This configuration can accommodate up to 72 passengers and has a range up to 275km on highway, 210km in city traffic.


EDI, whose expertise is in the development of drivetrains for hybrid and full electric commercial vehicles, has been working with TM4's reliable motors for several years to meet their needs in terms of power for a wide range of vehicles, from trucks to shuttles and buses.


TM4 has collaborated with EMOSS for their EMS series of full electric trucks. These trucks deliver an uncompromising performance and driving comfort, combined with an unmatched efficiency. Over 50 EMOSS trucks are now on the road using TM4 SUMO systems.

FOTON Harmony & Bafangda

TM4 powertrains are widely used in China under the name of its joint venture, Prestolite e-Propulsion Systems. As an example, Foton’s 18m Harmony City BJ6180 buses uses a TM4 SUMO HD powertrain, and Foton’s 12m Bafangda buses a TM4 SUMO MD powertrain.


TM4 has collaborated with GINAF for its E-series distribution trucks specifically aimed at the urban distribution. Using TM4 SUMO systems, these trucks are driving an average of 60kms per day as part of Heineken’s fleet electrification plan.


The electrified bus is based on the Karsan ATAK eight-meter low-entry bus platform and is equipped with a TM4 SUMO MD electric motor and inverter. This system is composed of a high-torque, PMVR direct drive motor and automotive-grade power electronics.

LION buses : eLion

The eLion is an all-electric school bus powered by a TM4 SUMO MD electric powertrain. The eLion has a customizable range accomplished with a modular battery design that provides anywhere from 70 miles of range with 3 battery modules to 100 miles of range with the maximum 5 battery modules.


TM4 collaborated with MAN bus & trucks for its test fleet of over 10 electrified City-Trucks vehicles in 2017. Designed for city center deliveries, these trucks used TM4 SUMO electric powertrain, which delivered 2,700 Nm of torque to the rear axle directly via a propshaft.


MOTIV’s All-Electric Powertrain integrates a TM4 SUMO motor and inverter system. It offers an innovative architecture that is scalable and modular, which allows to use the same core components in vehicles ranging from a Type A School Bus to a Class 8 Refuse Truck.


The 100% electric Nova LFSe based on the proven heavy-duty LFS platform integrates a TM4 SUMO HD electric powertrain. It offers an unparalleled driving and riding experience, significant reduction in noise level, zero emissions and a continuous operational range with dedicated infrastructure.

TM4, in collaboration with Purolator, Mcgill, Cummins, Linamar and Infolytica, have been working on the development of an optimized electric drivetrain for medium-sized trucks using TM4 SUMO systems.

TEMSA Avenue Electron electric bus

TEMSA's 12-meters bus is equipped with TM4 SUMO electric powertrain. With a range of 400 km on a single charge, this new bus platform will offer public transit operators a versatile option for the electrification of their fleet while minimizing infrastructure costs.


The TEMSA MD9 ElectriCITY bus is equipped with TM4 SUMO electric powertrain, comprised of a high-torque direct-drive motor and automotive-grade power electronics. This 9-meter bus can carry up to 63 passengers and can travel up to 230 km on a single charge with its 200 kWh battery pack.

THOR trucks

THOR trucks has been working with TM4 for their wide spectrum of solutions. The ET-One truck combines TM4 SUMO powertrain systems with options reaching from 300 to 700 HP, full torque starting at 0 RPM, a load capacity of 80,000 pounds and up to 300 miles of range.

The URSUS Ekovolt electric bus is equipped with a TM4 SUMO HD electric powertrain system, whose high efficiency gives the vehicle good driving parameters. The bus has 120 kWh capacity batteries and is perfectly adapted to its urban environment.


The Workhorse E-GEN chassis uses a 200 kW TM4 SUMO MD powertrain. UPS ordered more than 345 of these chassis as part of its broader Rolling Laboratory program to deploy electric-powered vehicles with greater range and performance.

Chinese bus OEMs

TM4 have been working with multiple Chinese bus OEMs over the years including Higer, Nanjing King Long, Yaxing, and many more. TM4 delivered over than 8500 systems for bus platforms ranging from 8 to 18 meters.

Related products


The TM4 SUMO MD systems are perfect for class 2 to 6 commercial vehicles and light to medium bus platforms.


The TM4 SUMO HD direct drive approach makes it perfect for any HD platforms and commercial vehicles applications.