F1 and FIA lock in 'minor' 2027 rule tweaks

The Formula 1 Commission has agreed to a series of minor rule adjustments for the 2027 season, including revisions to aerodynamic and bodywork components, an increase in pre-season testing, and tighter restrictions on Testing of Previous Cars (TPC). The changes, described as “minor” by organizers, were finalized during a meeting in London chaired by F1 CEO Stefano Domenicali and FIA single-seater director Nikolas Tombazis.

Why it matters:

These tweaks are part of F1’s ongoing effort to fine-tune regulations ahead of a technical shake-up. With manufacturers considering a shift from the current 50-50 split between internal combustion and electrical power to a 60-40 balance in 2027, the extra test day could prove critical for reliability and development. The new TPC restrictions also aim to prevent competitive advantages through excessive private testing.

The details:

• Aerodynamic revisions: Specific changes to bodywork and aero components were approved but remain undisclosed. They are intended as minor refinements rather than a major overhaul.
• Pre-season testing boost: Teams will get an additional day of testing, bringing the total to four days. The extra session is expected to take place in Bahrain, which is set to return as the season opener in 2027 after Australia hosted the first two races due to Ramadan timing.
• TPC restrictions tightened: Teams face new limits on using previous years’ cars for testing at circuits that will host a grand prix during the following season. This extends existing blackout periods.
• Power unit context: The extra test day aligns with ongoing discussions about rebalancing the power unit to favor the internal combustion engine, which would demand more development running and reliability checks before the season begins.

What's next:

All proposed changes require formal ratification by the FIA World Motor Sport Council before they are officially embedded in the 2027 regulations. If approved, teams will need to adjust their development and testing schedules accordingly, particularly with the potential power unit rules still under evaluation.