Ferrari’s 2026 Formula 1 season has been a story of steady and consistent progress, but one of the team’s most significant technical developments may have gone somewhat under the radar because expectations from paddock insiders—and perhaps even from those working within Ferrari itself—were not especially high. While much of the attention throughout the first half of the campaign has focused on aerodynamic upgrades, setup improvements and race execution, the introduction of the first ADUO-approved power unit evolution has quietly changed the competitive level of the Maranello-built engine.
Based on the performance data collected over the race weekends that followed its introduction, the first ADUO upgrade appears to have delivered a gain in the region of 0.2-0.3%. On paper that figure may appear relatively small, but in the incredibly competitive world of modern Formula 1, where the gaps between the leading teams are often measured in hundredths of a second rather than tenths, such an improvement represents a very meaningful step forward.
This is not because the upgrade has suddenly transformed Ferrari’s power unit into the outright benchmark of the Formula 1 grid. There is still work to do before the Maranello manufacturer can realistically claim that position. Instead, the importance of the update lies in the fact that it has significantly reduced the performance deficit that Ferrari had accumulated in overall power unit management, particularly in the interaction between the internal combustion engine and the hybrid electrical systems when compared to the strongest power units currently competing in Formula 1.
This naturally opens the door to an even more interesting technical discussion. If Ferrari has managed to extract such a significant performance improvement from the first development window permitted under the ADUO regulations, then what level of progress could become possible with the second and much larger upgrade package that is expected after the summer break?
It is precisely this question that explains why there appears to be a growing sense of optimism and confidence within Ferrari’s engine department in Maranello. Engineers know that the first step has already produced measurable gains, and there is every reason to believe that further development opportunities could deliver another important improvement before the end of the season.
Ferrari has made significant progress, but the engine is only part of the story To fully understand the scale of the Italian side’s recent progress, it is important to remember exactly where the team started at the beginning of the championship.
During the opening races of the 2026 Formula 1 season, several technical estimates suggested that Ferrari was operating with a disadvantage of between 25 and 30 horsepower compared to Mercedes. At the same time, according to the evaluation criteria established under the ADUO framework, the reference power unit on the Formula 1 grid continues to be the one developed by Red Bull Powertrains. Those numbers immediately highlighted the size of Ferrari’s challenge.
However, it would be incorrect to attribute every improvement seen over the past few months exclusively to the power unit. Formula 1 performance is always the result of multiple systems working together, and Ferrari’s progress has come through a combination of developments involving both the engine department and the aerodynamic department. The SF-26 has gradually become a much more complete racing car, not simply because the power unit has become stronger, but because the overall package has improved across several different areas.
One of the clearest examples arrived during the Miami Grand Prix weekend. With the permanent introduction of the new rear wing, internally nicknamed “Macarena” by team principal Fred Vasseur, Ferrari succeeded in reducing aerodynamic drag while simultaneously improving straight-line efficiency. This represented an important milestone because straight-line performance had been one of the team’s weakest areas during the opening phase of the championship.
Although the qualifying deficit at Miami still measured approximately 0.57%, the trend compared to the opening races had already changed significantly. Ferrari was no longer losing performance in exactly the same way as before. Instead, the combination of improved aerodynamic efficiency together with the upgraded power unit allowed the SF-26 to become considerably more competitive across different sections of the circuit. That progress became increasingly visible from one race weekend to the next.
Barcelona provided another important reference point. At the Spanish Grand Prix, the overall performance gap remained close to 0.56%, which still represented a noticeable deficit. Nevertheless, by that stage of the season the SF-26 single-seater had become a much more complete technical package. The improvements were no longer limited to isolated areas. Instead, the Maranello team had successfully combined stronger aerodynamic efficiency, improved balance, better race management and enhanced power unit performance into a far more competitive overall package.
It was therefore no coincidence that Lewis Hamilton secured victory at the Circuit de Barcelona-Catalunya, providing one of the strongest demonstrations up to that point that Ferrari’s continuous development programme was beginning to produce tangible results on track.
Austria and Silverstone reveal the true impact of the power unit upgrade
To isolate the specific contribution made by the ADUO power unit evolution, however, Austria and Silverstone remain the two most revealing race weekends. The Red Bull Ring represents a particularly unusual technical challenge because of its altitude.
The circuit’s elevation naturally penalises Ferrari’s compact turbocharger architecture more heavily than some of its direct competitors. Mercedes and Red Bull operate with different turbocharger configurations that allow their power units to maintain more consistent performance in thinner air. As a result, Austria tends to hide part of the benefit generated by Ferrari’s latest engine upgrade. Even under those relatively unfavourable circumstances, however, Ferrari’s average performance deficit had already fallen to around 0.46%.
That reduction represented the first convincing indication that the ADUO evolution was producing genuine gains. Current technical estimates suggest that the upgrade may have delivered an increase of approximately ten horsepower, a figure that aligns very closely with the level of improvement observed on circuit through telemetry analysis and comparative performance data.
Although ten horsepower may not sound dramatic to casual observers, in Formula 1 such an increase can have a substantial influence over an entire lap, especially when combined with improved hybrid deployment, greater energy recovery efficiency and better optimisation of electrical power delivery. The strongest confirmation of Ferrari’s progress ultimately arrived one race later at Silverstone. The British circuit has traditionally been considered one of the best venues for evaluating the true competitiveness of a Formula 1 car because it demands an excellent balance between aerodynamic efficiency, engine performance, high-speed cornering stability and overall vehicle balance.
Power unit performance plays an especially important role throughout the lap. Against this demanding technical background, the Italian side produced perhaps its most convincing evidence yet that the ADUO upgrade had genuinely reduced the performance gap. During Friday qualifying, Ferrari limited the deficit to an extraordinary 0.03%, before recording a gap of approximately 0.16% during the qualifying session that determined the Grand Prix starting grid.
Those numbers are exceptionally difficult to explain through engine improvements alone. Weekend preparation, simulator correlation, aerodynamic setup choices, tyre management, vehicle balance and the overall behaviour of the SF-26 all contributed to the final outcome achieved by Charles Leclerc and Lewis Hamilton. Even so, it remains increasingly clear that Ferrari’s power unit has eliminated a significant proportion of the disadvantage that existed during the opening races of the season.
Perhaps the most encouraging aspect is that the improvement has not been isolated to one particular circuit. Instead, the gains have appeared across multiple venues with very different characteristics, suggesting that Ferrari has genuinely improved the underlying competitiveness of its power unit rather than simply benefiting from favourable circuit layouts. Taken together, all of the available performance data collected throughout the most recent Formula 1 race weekends leads towards the same overall conclusion.
Ferrari appears to have recovered between 0.2% and 0.3% of total performance thanks to the first development stage permitted under the ADUO regulations. That may sound like a relatively modest percentage, but in Formula 1 it represents an extremely significant gain. On circuits where engine power has a particularly strong influence over lap time—like Spa-Francorchamps—that level of progress is almost sufficient to halve the performance deficit Ferrari displayed during the opening phase of the championship.
Considering how closely matched the leading Formula 1 teams have become during the 2026 season, recovering several tenths through a single development programme can fundamentally change the competitive picture across an entire race weekend. This is exactly why so much attention is now turning towards Ferrari’s next scheduled power unit evolution. The second ADUO development package is expected to be substantially larger than the first one, which naturally raises expectations regarding its potential performance impact.
At the same time, Ferrari will not be operating in isolation. Honda, Mercedes and the other manufacturers will also have access to the same regulatory opportunities over the coming months, meaning that every power unit supplier will continue searching for additional performance within the limits established by the regulations. For that reason, the second phase of development could become one of the defining technical battles of the remainder of the Formula 1 season.
Ultimately, the Maranello team has already demonstrated that it knows how to maximise the opportunities provided by the ADUO regulations. The first upgrade has delivered measurable gains, reduced a previously significant performance deficit and contributed to transforming the SF-26 into a much more competitive package than the one seen at the start of the year. Now the focus shifts entirely to the next stage.
If Ferrari can extract another meaningful improvement from its second ADUO development window while continuing to refine the aerodynamic package, improve race execution and optimise the overall efficiency of the SF-26, the competitive landscape could tighten even further as the championship enters its decisive phase.
The true ADUO battle, therefore, may only just be beginning, and the developments introduced after the summer break could determine not only how much Ferrari continues to close the gap, but also whether the balance of power among Formula 1’s leading manufacturers changes once again before the 2026 season reaches its conclusion.
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