The amendments were agreed to following the latest meeting of the Formula 1 Commission in London, chaired by F1 president and CEO Stefano Domenicali and FIA single-seater director Nikolas Tombazis.
Among the agreed changes are revisions to aerodynamic and bodywork components, and while specific details on these were not provided, they have been described as “minor” adjustments.
Teams will also receive additional track time ahead of the 2027 campaign after a proposal to increase pre-season testing from three days to four was approved.
The move follows an expanded testing program ahead of the 2026 season, when teams were given additional opportunities to familiarise themselves with the sport’s new technical package.
The extra day could prove particularly valuable if proposed changes to F1’s power unit regulations are ultimately ratified.
Manufacturers are currently considering a shift from the existing 50-50 split between internal combustion and electrical power to a 60-40 balance, increasing the importance of development and reliability running before the season begins.
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The additional test day is expected to take place in Bahrain, which is set to return as the opening round of the championship in 2027 after Australia hosted the first race of the previous two seasons due to the timing of Ramadan.
Another change agreed by the Formula 1 Commission concerns Testing of Previous Cars (TPC) regulations.
Under the revised rules, teams will face tighter restrictions on conducting TPC running at circuits scheduled to host a grand prix during the following season.
The amendment extends existing limitations, which already prevent teams from carrying out such testing at venues within a specified period before they appear on the F1 calendar.
All of the proposed changes remain subject to formal approval by the FIA World Motor Sport Council before they can be officially incorporated into the 2027 regulations.
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