Rules & penalties · Updated for 2026
F1 aerodynamic testing restrictions explained
The sliding-scale limits on wind-tunnel and computational aerodynamic development.
Quick answer
Formula 1 restricts wind-tunnel runs and CFD work, with the permitted amount adjusted by championship position. Lower-ranked teams receive more development capacity than leading teams.
01
Why restrict testing
Unrestricted aerodynamic development rewards the largest facilities and budgets. A defined allowance limits cost and creates a catch-up mechanism.
02
The sliding scale
Championship position is converted into a percentage of a reference allowance. The exact measurement periods and percentages come from the current sporting regulations.
03
What teams optimise
A tunnel run or simulation becomes a scarce resource. Teams must choose which concepts deserve physical or computational testing.