The Fédération Internationale de l’Automobile (FIA) has issued a new Technical Directive permitting Formula 1 teams to experiment with front active aerodynamics using mule cars during the dedicated tyre testing sessions organized by Pirelli. These test sessions are designed to support the development of the new 2026 Formula 1 tyres. This decision allows the Italian tyre manufacturer, based in Milan, to gather more accurate and relevant data, while teams gain valuable insight into the aerodynamic direction for the upcoming regulation overhaul.
Although the topic has not received widespread attention, a recent FIA directive has quietly authorized all Formula 1 teams to trial front active wing systems on mule cars during official tyre development tests for the 2026 season, which are conducted by Pirelli.
The sole tyre supplier for the championship is currently undertaking an extensive development process for the next-generation 18-inch tyres, which will be narrower than the current specification. These tyres must be homologated ahead of the 2026 season, a campaign set to usher in one of the most significant technical revolutions in modern Formula 1 history.
In a major step forward, the FIA has granted teams a technical exemption to introduce an experimental system simulating next year’s active aerodynamics. Under the 2026 regulations, drivers will have access to a switch on the steering wheel that allows them to toggle between two aerodynamic modes: the low-drag “X Mode,” designed for use on straights to minimize air resistance, and the high-downforce “Z Mode,” intended for corners and slower sections of the track. This dual-mode system will apply to both the front and rear wings of the car.
Unlike the current Drag Reduction System (DRS), which was introduced primarily to enhance overtaking opportunities, the upcoming aerodynamic changes are focused on improving energy efficiency. The main objective is to reduce aerodynamic drag and energy consumption, which is especially crucial as hybrid power units in 2026 will derive 50% of their total power output from electric components.
One of the technical concerns raised by teams and engineers relates to circuits like Monza, where energy regeneration under braking is limited due to the lack of heavy braking zones. In such scenarios, the cars may risk depleting their electrical energy reserves during a lap. This would leave the hybrid power unit operating at just 500 horsepower—only half of the maximum 1,000 horsepower output theoretically available.
To mitigate these potential issues, the FIA’s Head of Single-Seater Matters, Nikolas Tombazis, and his department have decided to implement front and rear active aerodynamics starting from the 2026 season. Pirelli, in turn, needs to thoroughly evaluate how the tyres behave under both aerodynamic configurations. Until the recent British Grand Prix at Silverstone, all development tests had been carried out using fixed front wings, as no team had yet devised a viable active wing solution.
Incorporating hydraulic actuators into the front wing and nose cone of the car would typically require teams to re-submit their cars for a new frontal crash test in order to receive homologation for the modified structure. However, fully aware of the financial impact such a requirement would have under the current Budget Cap regulations, the FIA has opted to show flexibility and trust. Teams have been granted the freedom to modify their cars without undergoing repeat homologation procedures, thus avoiding excessive cost escalation.
As a result, it is highly likely that the upcoming tyre testing sessions, scheduled to take place after the Hungarian Grand Prix in Budapest, will showcase the first experimental active front wing designs. On Tuesday after the race, Alpine, McLaren, and Racing Bulls will be on track, followed by Haas and Alpine once again on Wednesday.
Scuderia Ferrari is set to take part in these tests as well, deploying its SF-25 mule car after the Italian Grand Prix at Monza. Red Bull Racing will also be present at that session. Both teams will participate in further tests at Mugello, which will serve as the penultimate tyre testing event before final homologation. The concluding session is expected to take place in Mexico.
It will be particularly interesting to observe which teams focus not only on tyre data but also on collecting technical insights into active aerodynamics. While the primary beneficiary of these tests is Pirelli, the wealth of information gathered will also be of significant importance to the technical departments of each Formula 1 team as they prepare for the 2026 regulation changes.
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