Overview
- The FIA Motorsport World Motor Sport Council formally ratified the package on Tuesday, June 23, 2026, covering immediate in‑season safety tweaks and technical rules for 2027.
- Boost use in wet or low‑grip conditions has been partially reintroduced to prevent sudden power drops but will not add extra power and the overtaking boost function is disabled to lower crash risk.
- The Heat Hazard procedure can now be declared separately for a Sprint or the main race so cooling systems or ballast rules apply only where needed.
- For 2027 the ICE:electric power split is set at 58:42 with a planned move to 60:40 in 2028, changes that include higher fuel flow and adjusted MGU‑K limits and that the FIA says will avoid forcing wholesale chassis redesigns.
- Operational measures to help teams implement the changes include extending 2027 pre‑season testing from three to four days, limiting formation laps at some circuits, and allowing one‑ to two‑lap race reductions, while the FIA will continue to monitor on‑track developments and work with stakeholders.