The British Touring Car Championship (BTCC) – TOCA has become the first championship in the UK to adopt fully sustainable fossil-free fuel for all its cars, discontinuing hybrid power.

All aspects of the fuel’s BTCC test and development programme have been completed successfully, and following a full assessment and consultation the decision has been made to introduce the 100% sustainable fuel for every car from next season, supporting innovation across motorsport in the UK.

From 2025, cars will have the same power-boost output as in 2024 – and the same boost deployment format as previously used – with the additional power surge coming solely via turbo boost. The cars will also be some 55 kilograms lighter and nimbler as a result.

The new fuel – designated Hiperflo ECO102 R100 – is specifically engineered to maximise performance, compatibility, and sustainability. The fuel is 100% fossil-free, meaning all components are derived from synthetic and biological (i.e. non-crude) sources. Hiperflo ECO102 R100 conforms to the highest FIA and ISCC compliances.

Other rule tweaks have been ratified by TOCA ahead of the 2025 BTCC season, with information on these regulation changes to be released in the coming few days.

Alan Gow, BTCC Chief Executive, said, “The introduction of 100% fossil free sustainable fuel for 2025 shows that the BTCC remains committed to innovation in motorsport. As the highest profile championship in the UK, this introduction is a significant and essential step in maintaining the competitiveness and excitement synonymous with the BTCC, but in a more sustainable and forward-thinking way.

“We don’t just sit still with the BTCC – we evolve, and we advance, as today’s announcement firmly underlines.”

Ian Smith, Technical Director, Motorsport UK, added, “We are pleased and excited to support the British Touring Car Championship in their progress towards 100% fossil free fuel in 2025, and to acknowledge and celebrate the efforts of the TOCA leadership team. A particular note of acknowledgement to Sam Riches, who has relentlessly pursued this opportunity during his first season as TOCA Technical Director, and the extended network of BTCC technical partners, whose efforts and feedback via Sam helped inform and define the Motorsport UK Roadmap for Sustainable Fuel adoption and the regulations currently published for consultation for 2026.”