Mercedes chief Toto Wolff and Red Bull team principal Christian Horner are supporting a postponement of increased use of biofuels by Formula 1 teams next year.
The sport is looking to increase the sustainability of its fuels, with the current level of biofuel used by teams standing at 5.75%.
Under next year’s regulations that figure will rise to 10%, but F1 is already expected to use 100% sustainable fuels when introducing the next generation of generators.
The FIA delivered its first barrels of fully sustainable fuel to manufacturers of F1 engines at the end of last year.
A deal to push forward the planned new power units – which are to be designed to run on 100% sustainable fuel – through 2025 is linked to the engine freeze talks, but still faces opposition from Renault.
The FIA has committed to becoming net zero by 2030 as part of an ambitious environmental strategy approved during its annual general assembly week and destined to reduce the environmental impact of motorsport.
The introduction of the hybrid engine in Grand Prix racing in 2014 marked the sport's first step towards sustainability.
But the research, development and production by the FIA’s technical department of a 100% sustainable fuel, developed to stringent F1 specifications, is another significant milestone in F1's quest to reduce its carbon emissions.
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