In Formula 1, even a small detail out of place can spark suspicion, debate, and controversy. This was the case after the Chinese Grand Prix, where Mercedes came under scrutiny for unusual behavior of the front wing on Kimi Antonelli‘s race-winning car and George Russell’s second-place car.
Footage revealed a peculiar dynamic: the front wing would fully open in straight-line mode (SM), then transition in what appeared to be multiple stages into corner mode (CM). During braking, the wing seemed to pause in an intermediate position before completing the movement at lower speeds. At first glance, this appeared to conflict with technical regulations, which set a maximum time of 0.4 seconds for the transition between the two configurations.
Rival teams suspected a potential exploitation of a regulatory grey area to improve braking stability or energy recovery. Rumors suggest at least one team, likely Ferrari, contacted the FIA for clarification.
However, the reality was far less dramatic. According to The Race, the wing’s behavior was not intentional but caused by a simple miscalculation by Mercedes. The hydraulic system responsible for moving the wing into corner mode had not been properly calibrated to counter aerodynamic forces at high speed. Essentially, above a certain threshold, the pressure was insufficient to complete the movement quickly.
Only when the car slowed down, reducing the forces on the wing, did the system move the wing into its intended position. The anomaly was unintentional and purely due to a calibration error.
The issue had already emerged during qualifying, prompting the team to replace the wing on Russell’s car. Despite these modifications, Kimi Antonelli experienced the same behavior during the race. Since then, Mercedes has worked in Brackley to reinforce the hydraulic system and correct the fault ahead of the Japanese GP.
After reviewing the case and consulting with the team, the FIA found the explanation satisfactory. Analyses confirmed the wing’s behavior did not provide any performance advantage and may have even been a braking disadvantage. This assessment effectively quelled technical controversy.
Interestingly, a few hours before these details emerged, several reputable sources had already denied any formal FIA investigation, including paddock insider and photographer Kym Illman, who urged caution in interpreting circulated footage.
One key takeaway is that this incident highlights the precision of active wing regulations. Going forward, any anomalous behavior of active aerodynamics will be monitored even more closely. While paddock theories ranged from potential shifts in aerodynamic center to improved energy management, this case proves that sometimes the simplest explanation is correct: no trick, just a technical error.
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