2025 · TECHNICAL
2025 Technical Regulations
2025 was the closing chapter of the ground-effect era introduced in 2022. The core chassis-aero-PU architecture carried across unchanged: 1.6-litre V6 turbo-hybrids with MGU-K + MGU-H, ground-effect venturi floors generating the majority of downforce, and 18-inch low-profile Pirelli slicks. The year's changes were incremental — front-wing flexibility clarifications, floor-edge tweaks to curb porpoising tendencies and minor cockpit ergonomic updates. No foundational rewrite because teams and the FIA were both focused on 2026.
Chassis & aero — continuity from 2024
Minimum weight, overall dimensions, wheelbase limits and the ground-effect floor template all carried over from 2024 with only minor clarifications. The front-wing flexibility tests — a running battleground since 2023 with the FIA periodically stiffening the load-deflection criteria — saw one more round of tightening aimed at preventing flex patterns that some teams had been exploiting. Floor-edge and diffuser geometries were also refined to continue the post-2022 porpoising mitigation trajectory.
Key changes
- Front-wing flexibility tests tightened once more.
- Minor floor-edge clarifications for porpoising control.
Power unit — final V6 + MGU-H year
2025 was the swan song of the MGU-H era. The power-unit architecture — 1.6-litre V6 turbo, MGU-K, MGU-H, ES, CE — matched 2024. Development was frozen except for reliability remedies and specific upgrade windows. Component allocations per season stayed at their 2024 counts (ICE, turbo, MGU-K, ES, CE, plus control electronics). Teams optimised existing designs rather than innovating because any development resources spent on the 2025 PU compete with 2026 development inside the PU cost cap.
Safety
Safety rules carried over from 2024 without meaningful change. Halo, side-intrusion panels, anti-submarining structures, crash-test load targets and driver equipment (HANS, suit specification, helmet homologation) all remained at 2024 specification. The FIA continued to publish Technical Directives clarifying existing rules — for example around rear-impact structure integration and fuel-system sealing — but none introduced a step change.
Last updated: 2026-04-24
This summary is editorial material prepared by F1pedia for general F1 audiences. It is not a legal reference. For binding rule text, consult the official FIA document.