Mercedes' two-phase front wing under FIA scrutiny

The FIA is investigating a potential regulatory loophole in the design of Mercedes' front wing, shifting focus from the recently addressed engine compression ratio debate to a new aerodynamic controversy. The system in question is alleged to operate in a "two-phase" manner that may circumvent the strict 400-millisecond closure time mandated for movable aerodynamic parts, potentially giving the team a performance advantage in braking zones.

Why it matters:

This investigation highlights the continuous, high-stakes technical chess match between F1 teams and the governing body. If deemed illegal, it could force Mercedes to redesign a key component, impacting their competitive performance. Conversely, if it passes scrutiny, it could represent a clever interpretation of the rules that other teams may rush to copy, sparking a new development race centered on aerodynamic trickery.

The details:

• The controversy emerged after teams were required to publish their 2026 car designs post-Chinese GP, allowing for detailed scrutiny by rivals and the FIA.
• Mercedes' front wing is suspected of closing in two distinct stages. The first stage meets the 400ms limit monitored by the FIA sensor, while a second command fully closes the wing, taking total time beyond the allowed limit.
• The alleged benefit is a reduction of sudden forward load transfer just before braking, which would improve car balance and stability during critical corner entry.
• Online video evidence reportedly shows the system in operation, prompting the formal scrutiny.
• While initial reports pointed to Ferrari as the team requesting clarification, the Italian squad has denied this. Motorsport.com suggests the query came from another, currently anonymous, team.

What's next:

The issue is now in the hands of FIA Single-Seater Director Nikolas Tombazis and his technical team. A ruling is expected during the Japanese Grand Prix weekend at Suzuka to prevent ongoing controversy and provide clarity for all teams. The outcome will set an immediate precedent for what is permissible within the 2026 aerodynamic regulations, potentially triggering a wave of design updates up and down the grid depending on the verdict.