Starting today, the updated ATR (Aerodynamic Testing Restrictions) rankings officially come into effect, regulating how much wind tunnel time and CFD (Computational Fluid Dynamics) development each Formula 1 team is allowed to use during the second half of the season. Throughout the opening six months of the championship, Ferrari benefited from the highest Aero Test allocation among the leading teams. Compared to McLaren, the Maranello squad was able to complete 48 additional wind tunnel runs and roughly 300 extra CFD simulations.
That valuable development advantage allowed the engineers led by Frederic Vasseur to introduce two major upgrade packages during the first part of the campaign, with significant updates arriving at the Miami Grand Prix and later at the successful Montmeló weekend.
From an aero-mechanical perspective, the Ferrari SF-26 has proven to be a highly competitive design, although its overall performance has often been held back by a power unit that has struggled to match the level of its main rivals. While waiting for the first ADUO-related power unit upgrades, Ferrari’s engineering department focused heavily on aerodynamic development, adopting an unusually proactive approach. Rather than correcting weaknesses, the team concentrated on evolving an already strong package in an effort to compensate for the horsepower deficit.
The documentation released by the FIA offers a clear overview of the development areas Ferrari has prioritised throughout the season. Even though the 2026 Formula 1 regulations have moved away from the traditional Venturi-generated ground effect, the floor remains the most important aerodynamic component for development on the current generation of cars.
Across the opening eight Grands Prix of the season, Ferrari introduced nine separate modifications to the SF-26’s floor, including updates to the floor body, floor board and floor edges. The diffuser has also received significant attention, with three different specifications being designed and brought to the track.
The arrival of active aerodynamics has opened entirely new areas of development as teams continue searching for maximum aerodynamic efficiency. This is reflected by the numerous updates Ferrari has made to the front wing endplates and corner sections, all designed to better manage and redirect the airflow around the front tyres. Similar development work has also continued on the rear wing.
The key question now is whether Ferrari has already been using its generous first-half Aero Test allocation to prepare a third major upgrade package for the SF-26. Much will depend on the financial resources still available in Maranello under Formula 1’s budget cap. On that subject, Mercedes Team Principal Toto Wolff recently expressed doubts about how much room Ferrari still has to continue an aggressive development programme while remaining within the spending limit.
Looking beyond the aerodynamic package, Ferrari’s first homologated power unit update introduced under the ADUO regulations failed to deliver the impact many had hoped for during the Austrian Grand Prix weekend at the Red Bull Ring.
However, it is important to remember that, as Ferrari Power Unit Technical Director Enrico Gualtieri himself acknowledged, this first evolution was never expected to completely change the competitive balance between the various engine manufacturers.
There is also growing suspicion that several manufacturers may have deliberately concealed part of their true performance earlier in the season in order to qualify for a more favourable ADUO development category. When Ferrari finally pushed its package to the limit, the team may have discovered that its deficit was larger than initially anticipated.
The upcoming races at Silverstone and Spa-Francorchamps should provide much clearer answers. Ultimately, there is a genuine possibility that the performance gains delivered by Ferrari’s ongoing power unit development could be partially cancelled out by the team’s reduced aerodynamic testing allocation during the second half of the championship.
For Ferrari supporters, it is an all-too-familiar feeling—a sense that the glass is only half full, one that fans of the Prancing Horse have experienced far too often over the past two decades.
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