Ferrari’s latest SF-26 upgrades for the 2026 United States Grand Prix could deliver a lap-time improvement of approximately 0.15 seconds, according to a report from AutoRacer.it. However, team principal Frederic Vasseur has urged caution despite Charles Leclerc’s impressive Friday practice performance in Austin, stressing that the new aerodynamic package still requires further evaluation and that several rivals could challenge Ferrari in qualifying.
The Maranello team has introduced substantial changes to the SF-26’s floor, diffuser and sidepods, aiming to increase downforce while improving aerodynamic efficiency. Early indications from the Circuit of the Americas have been encouraging, particularly with Charles Leclerc showing competitive pace in both qualifying and race simulations. Nevertheless, Frederic Vasseur believes the full potential of the developments remains to be understood.
Ferrari’s Austin upgrades target downforce and aerodynamic efficiency
Ferrari has introduced extensive modifications to the SF-26 for the United States Grand Prix, with significant revisions to both the front and rear sections of the floor. To complete the aerodynamic development work, the team has also made changes to the diffuser.
The objective is to increase aerodynamic load and maintain more consistent downforce throughout the lap, while limiting drag and allowing the car to move more efficiently through the air on the straights. Achieving this balance is particularly important at Austin, where the circuit combines demanding corners with long acceleration zones.
Ferrari has also revised the sidepods, particularly the narrowing section towards the rear of the car commonly known as the Coca-Cola area. The bodywork now features more tapered shapes, while the sidepod inlets have been modified with a more aggressive undercut.
These changes form part of an interconnected aerodynamic development programme rather than a series of isolated modifications. The relationship between the floor, sidepod geometry and diffuser is central to how Ferrari intends to generate additional downforce while controlling aerodynamic resistance. The principal changes are examined in greater detail in the Ferrari SF-26 Austin aerodynamic upgrade analysis.
Despite the scale of the changes, Frederic Vasseur has once again called for realistic expectations about the performance improvement the package can deliver.
Frederic Vasseur explains why Ferrari still has much to learn
Speaking after Friday’s practice sessions at the Circuit of the Americas, Frederic Vasseur acknowledged Ferrari’s encouraging start but emphasised that the competitive picture remained extremely close.
“It’s definitely a good start, but I think once again the field is very, very tight. The practice classification isn’t very representative ahead of qualifying, which means we have to focus on ourselves and keep working. We have a lot to learn about the car with this new package, and we’ll try to do our best tomorrow.
We’re still at a very early stage. The impact of the developments is slightly smaller than it was at the beginning of the season. So we need to fine-tune every detail and try to give our best tomorrow.
Let’s see qualifying first, because if we find ourselves in another car’s slipstream, it becomes more difficult. Let’s see how it goes; I think there are five or six cars capable of fighting for pole position. It’s positive for F1 and it’s positive for us if we can stay at the front.”
The Ferrari team principal’s assessment reflects the importance of understanding the updated car before drawing firm conclusions from Friday’s lap times. Although the latest developments have produced encouraging initial indications, the team still needs to refine its setup and establish how effectively the new aerodynamic configuration performs under more representative conditions.
Frederic Vasseur also highlighted a broader development challenge: as the season progresses, the gains available from individual upgrades tend to become smaller. Extracting the expected performance therefore depends increasingly on optimising every detail rather than relying solely on the introduction of new components.
Ferrari engineers reportedly expect around 0.15 seconds from the upgrades
According to AutoRacer.it, Ferrari’s engineers expect the new Austin aerodynamic package to provide a lap-time improvement of approximately one and a half tenths of a second, equivalent to 0.15 seconds.
That figure represents a reported expectation rather than a confirmed performance gain demonstrated under identical conditions. Friday’s practice results provided positive indications, but the full benefit of the changes still needs to be established through further analysis and running.
Ferrari’s approach to the opening session was particularly useful in this respect. The team initially evaluated the new specification on Charles Leclerc’s car while Lewis Hamilton ran the previous configuration, allowing the engineers to compare the behaviour of the two versions. The early findings from Ferrari’s split-specification Austin test provided an initial reference before both cars continued with the updated package.
The estimated gain must also be considered in the context of the team’s development objectives. Ferrari is not simply trying to generate more peak downforce, but to improve the SF-26’s aerodynamic behaviour throughout the lap while limiting the additional resistance that can accompany higher-downforce configurations.
The early signs are promising, but the precise contribution of the new floor, diffuser and sidepod modifications cannot yet be established individually.
Charles Leclerc’s Austin pace encourages Ferrari before qualifying
Ferrari’s optimism following Friday practice was largely driven by Charles Leclerc’s performance. The Monegasque delivered an excellent opening day, demonstrating strong pace with the updated SF-26 and providing encouraging feedback on the aerodynamic package.
However, Charles Leclerc is also aware that the competitive picture could change significantly on Saturday. Rival teams may have more performance available to unlock, including through different engine settings and other areas of car optimisation.
That uncertainty helps explain why Frederic Vasseur is attempting to keep expectations under control despite Ferrari’s position near the front of the field. Practice classifications do not necessarily reveal the performance each team will be capable of extracting during qualifying.
The team must therefore continue analysing its Friday data to maximise the performance available from the revised configuration. The comparison between the old and new specifications, together with the qualifying simulations and longer runs, provides Ferrari with information that can be used to refine its setup.
Charles Leclerc’s pace has nevertheless offered an encouraging indication of what the SF-26 might achieve with the new components. The Ferrari driver looked competitive over a single lap and during race simulations, suggesting that the upgrades deserve further evaluation as the weekend progresses.
The practice performance and stint comparisons can be explored through the F1 Practice & Long-Run Analysis, which provides additional context beyond the headline session classifications.
Frederic Vasseur warns against judging Ferrari upgrades too early
Frederic Vasseur’s caution is also supported by the experience of rival teams during the season. Mercedes, McLaren and Red Bull have all introduced substantial developments at various stages, but extracting the expected performance has not always been straightforward.
In some cases, teams have struggled to maximise the benefits of their upgrades immediately. In others, new components have ultimately had to be abandoned because they failed to produce the desired results.
Ferrari therefore has reason to avoid drawing premature conclusions from its first two practice sessions in Austin, even though the SF-26 has provided encouraging initial feedback.
The team will continue evaluating the relationship between aerodynamic performance, car balance and lap-time improvement before determining exactly how much the latest package has changed its competitiveness.
For Frederic Vasseur, qualifying represents the next meaningful test. With five or six cars potentially capable of fighting for pole position, Ferrari cannot assume that its encouraging Friday performance will translate directly into an advantage when the competitive sessions begin.
The immediate focus remains on analysing the available data, refining the SF-26’s setup and extracting the maximum performance from the new aerodynamic components.
Ferrari’s next opportunity to evaluate the upgrades will come in FP3, scheduled for 19:30 CEST, before qualifying provides a clearer indication of whether the reported 0.15-second improvement can help the Maranello team challenge at the front of the grid.
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