Rules & penalties · Updated for 2026
F1 parc fermé rules explained
The restrictions that stop teams freely rebuilding or resetting cars during the competitive weekend.
Quick answer
Parc fermé limits setup and component changes during defined periods. Permitted safety, repair and like-for-like work remains possible under FIA supervision.
Why it exists
Without restrictions, teams could build a qualifying car and then substantially reconfigure it for the race. Parc fermé links the competitions and controls cost and workload.
What can still change
The regulations list permitted adjustments, replacements and weather-dependent exceptions. The FIA may require evidence that work is genuinely like-for-like.
Sprint complexity
Sprint weekends create additional competitive sessions and parc-fermé windows, so always use the current event format rather than a generic timeline.