- Ferrari ask FIA to clarify if Mercedes’ front wing system complies with 2026 regs.
- Video footage suggests the W17’s wing takes twice the permitted time to close.
- Mercedes lead championship but face second technical dispute in as many races.
Mercedes heads to the Japanese Grand Prix under growing pressure. Ferrari has asked the FIA to review the W17’s front wing system after the Chinese Grand Prix. The request has pushed the governing body to begin a closer technical check.
The issue centres on how the front wing closes during a lap. Ferrari believes the system may not follow the 2026 rules. The FIA is now studying data and footage from China to decide what comes next.
Mercedes has started the season strong. George Russell won in Australia. Kimi Antonelli followed with a win in China. The team now leads the Constructors’ Championship, but questions around legality are rising.
What sparked the concern?
The story began with a fan watching race footage. A Reddit post in the Formula 1 community highlighted odd front wing behaviour on the Mercedes car. It has now spread all over the internet.
The fan compared two corners from the Chinese Grand Prix. At turn 14, under heavy braking, the wing closed slowly. The move took about 800 milliseconds.
At turn 9, with less braking, the same wing closed much faster. This difference raised questions about how the system works.
The 2026 cars use active aerodynamics. Wings open on straights to cut drag. They close in corners to add grip. The switch between these modes must follow strict timing rules.
What the regulations say
The FIA sets a clear limit. The front and rear wings must complete their change within 400 milliseconds. This keeps the system fair and easy to measure.
A slower closure can help a car. It lets the car keep speed deeper into a corner. Even a small delay can give a real edge.
Some analysts think Mercedes may have found a workaround. They suggest a two-step movement. The first step happens within 400 milliseconds and satisfies the FIA sensor.
Then a second, slower movement completes the process. This part may fall outside what the sensor checks.
The idea is simple. The system looks legal on the data. But in real motion, it may behave differently.
How the engineering might work
Engineer and analyst Dr Obbs (PhD in fluid mechanics) shared his view on X. He explained how load can change wing movement.
“400ms is the regulation for closing time,” he wrote. “However, the aero load could be different depending on the corner entry speed at the point of movement.”
He pointed to pressure on the wing. More load means more force on the actuator.
“With a greater load pushing against the front wing elements, the load on the actuator would increase,” he said. “With a hydraulic actuator, this means more pressure to move the flap.”
He then raised a key idea. “Could you design some kind of pressure-activated bypass valve, or a relief valve that would slow this pressure build-up and movement under a given aero load? This would slow the closing time, but only under aero load.”
He added one more detail. “In a static test with no aerodynamic load, the closing time could well be within regulation.”
Other analysts link the system to braking. A longer transition may help balance the car. It may also help energy recovery from the MGU-K.
Ferrari contacts the FIA
Ferrari took the next step after China. The team asked the FIA for clarification on the system.
Italian outlet AutoRacer, through Rosario Giuliana, reported the move. Ferrari based its concern on technical studies of the wing.
The FIA, led by Nikolas Tombazis’ office, is now reviewing the data. Officials want to see if the system meets the rules. The FIA may act to clear the issue. It could ask teams to change designs. Or it could force Mercedes to adjust their car.
For now, Ferrari has not filed a formal protest. It remains a technical question. But that could change during the Japanese Grand Prix weekend.
A formal protest would trigger a full investigation. Penalties could follow if a breach is found.
However, not everyone agrees that rules have been broken. Some say the wing may pass all tests. The actuator may move within 400 milliseconds.
The slower motion seen on video may come from airflow and load. Carbon fibre parts can flex and settle under stress.
The 800-millisecond figure comes from video, not FIA data. Only Mercedes and the FIA have the full numbers. The final answer will depend on that hidden data.
