Following three years of successful trials, more than 200 sites will now deploy Fuelre4m’s Re4mx technology to reduce fuel use, lower emissions and improve performance with no engine modifications.

Holcim UK has announced the national rollout of Fuelre4m’s fuel reforming technology across more than 200 sites throughout the UK. The programme follows three years of rigorous real-world testing, during which Re4mx consistently improved fuel efficiency and supported lower emissions across multiple Holcim operations.

The agreement marks the first commercial-scale introduction of this type of fuel conditioning across the UK construction and quarrying sectors.

“This agreement is the result of meticulous testing, collaboration and operational learning. We have seen consistent results with Re4mx across a wide range of use cases. This is about measurable outcomes, not promises.”Edern Lalanne, Holcim UK Supply Chain Director

Results observed during trials

  • 15–20% lower fuel use.
  • Up to 23% lower emissions from fuel burned, including CO₂, NOx and particulate matter.
  • Improved combustion quality and smoother engine performance, including lower exhaust temperatures.
  • No engine changes, retrofit, operational downtime or disruption.
  • Greater consistency and predictability in fleet fuel performance.

Holcim tracked the programme using standard fuel-flow and engine-data monitoring tools so that results reflected real working conditions. Re4mx will be supplied in pre-measured containers and introduced directly into site fuel systems.

The rollout also includes digital traceability and reporting infrastructure designed to support site-level accountability, emissions visibility and wider ESG objectives.

“This contract is not just about supplying product; it is about delivering an integrated solution. Our focus is practical decarbonisation with immediate operational impact.”Rob Mortimer, CEO, Fuelre4m Group

The partnership makes Holcim UK the first within the global Holcim group to introduce Fuelre4m technology at national scale. Both organisations are also exploring extension into the wider transport and logistics supply chain.