Rumblings in the Formula 1 paddock have intensified after reports surfaced suggesting that Mercedes may be operating a two‑phase front‑wing closure mechanism that could fall outside the intended scope of FIA active‑aerodynamics regulations.
The system, observed during recent sessions and highlighted by technical analysts, appears to manipulate the timing of the wing’s transition between active and closed states — potentially allowing the W17 to gain an aerodynamic advantage without triggering regulatory alarms.
Concerns were amplified when Ferrari reportedly requested clarification from the FIA, believing Mercedes may have discovered a way to bypass the mandatory closure‑time sensors by splitting the wing’s movement into two distinct stages.
A two‑step transition
Footage and technical breakdowns indicate that Mercedes’ front wing does not simply snap shut in a single motion. Instead, it appears to operate in a two‑phase sequence.
During the first phase, a rapid movement lasts roughly 400 milliseconds, which the FIA’s control system interprets as a full closure. Afterwards, a slower, mechanical continuation follows which brings the wing to its final aerodynamic position — but outside the time window monitored by the FIA.
This behaviour was visible in live broadcast screenshots last time out at the Chinese Grand Prix, where the front wing could be seen shifting first to an intermediate angle before completing its movement moments later. Ferrari believes this staggered process may allow Mercedes to comply with the letter of the regulations while sidestepping their intended effect.
Why Mercedes might be doing it
Separate aerodynamic analysis suggests the system may be tied to braking stability. When a driver hits the brakes, the car’s aerodynamic balance shifts forward, reducing load on the rear axle. Mercedes’ active‑aero behaviour appears to manage this transition in a highly controlled way:
The rear active aero switches off immediately, as required. The front wing moves first to an intermediate position, reducing front downforce rather than cutting it entirely. Only after the initial braking phase does the front wing complete its full closure.
This staged approach helps prevent the front end from becoming overly loaded during the sharp forward weight transfer that occurs under heavy braking. As the braking force eases, the front flaps return to their standard position, restoring downforce and avoiding mid‑corner understeer.
A Potential Competitive Edge
If the system functions as described, Mercedes may be benefiting from: greater stability during initial braking, a smoother aero‑balance transition, improved tyre management and more predictable handling into high‑speed corners.
The question now is whether this clever engineering falls within the rules — or whether it exploits a loophole in how the FIA measures active‑aero transitions.
