New Renault Trucks powertrain to offer fuel efficiency boost

Renault Trucks has announced an upgrade to the powertrain of its T, T High, C and K ranges, with the introduction of a new DE13 R engine and a new generation of Optidriver gearboxes.

The manufacturer says the changes can cut fuel consumption by up to four per cent compared with the previous generation, while also reducing CO₂ emissions, improving performance and driver comfort. The new engine is compatible with HVO and B100 renewable fuels.

The company cites the development as a response to rising operating costs and growing pressure on operators to decarbonise. The updated powertrain combines the DE13 R engine, revised Optidriver transmission technology and enhanced predictive driving systems.

“The decarbonisation of road transport relies on several complementary levers,” said Antoine Duclaux, president of Renault Trucks.

“Alongside the acceleration of the development of our electric offer, we continue to improve the energy efficiency of our combustion-engine vehicles in order to help our customers reduce their fuel consumption, CO₂ emissions and total cost of ownership from today. This new powertrain is a concrete illustration of this approach.”

The DE13 R engine is offered in outputs up to 540 hp with 2800 Nm of torque. It incorporates new materials such as high‑strength grey iron and compacted graphite iron to increase durability. Renault Trucks says several technical changes improve combustion efficiency and reduce energy losses. Maximum cylinder pressure can reach 250 bar, and a new fuel supply system uses an external high‑pressure pump for more precise injection.

A more powerful Optibrake+ engine brake is fitted as standard, aimed at improving control, in particular on gradients. The engine is paired with a new generation of Optidriver gearboxes featuring updated software that enables gear changes up to 20 per cent faster than before.

Fuel‑saving technologies include Optivision+ predictive cruise control, which adjusts speed, acceleration and gear selection based on topography and road signs. On T and T High models, a Predictive Engine Stop Start function can shut down the engine during freewheeling phases while maintaining essential systems, restarting instantly when needed.

The DE13 R also meets the NNR3 noise emissions standard.

The manufacturer says the new powertrain contributes to smoother, quieter operation due to the DE13 R’s responsiveness, combined with smoother gear changes.

Meanwhile, optional Smart Steering improves directional stability and incorporates Driver Assist functions such as lane correction and adaptive cruise control.