The most important development of Ferrari’s SF-26 season has not been its latest engine work. In our view, the real technical turning point came in Barcelona, where a major aerodynamic package changed the behaviour of the 2026 car and helped address one of its most significant early-season weaknesses.
As Formula 1 enters its summer break, the usual wave of technical speculation has gathered pace. Much of the attention has centred on the A2 engine, Ferrari’s dyno testing of its new power unit and even the arrival of several technical figures from Aston Martin, developments that have sometimes been presented almost as a revolution at Maranello.
In reality, these activities are part of the normal development process for a Formula 1 team. Engines inevitably undergo dyno testing before homologation, while the movement of second- and third-tier engineers between teams is an established feature of the paddock. The more significant change to the Ferrari SF-26 came elsewhere.
Barcelona was the real turning point for the Ferrari SF-26
In our view, Ferrari’s most important upgrade of the season so far was the aerodynamic package introduced in Barcelona. The Italian team did not simply add a few minor aerodynamic details at the Catalan circuit. The work involved the floor, front wing and airflow management, increasing the car’s overall efficiency and making the rear end considerably more stable.
The results were immediate. The SF-26 returned to a competitive level both over a single lap and across race stints, while showing a clear improvement in the management of its rear tyres, which had been the car’s main limitation during the opening part of the championship.
For that reason, we consider the Barcelona development to be the true technical turning point of Ferrari’s season so far. It also illustrates why the Scuderia’s wider race-by-race development strategy for the SF-26 cannot be judged simply by the size or visibility of each individual upgrade package.
Ferrari’s rear tyre problem has not disappeared
However, it would be premature to conclude that Barcelona solved the problem completely. The upgrade reduced Ferrari’s rear tyre weakness; it did not eliminate it.
Subsequent races demonstrated that the SF-26 can still struggle when a circuit places particularly high demands on the rear axle. The car was also more competitive in Hungary than it had been during the early rounds of the season, but rear tyre management remains its principal limitation.
It is no longer the crisis Ferrari experienced at the beginning of the year, yet the problem has clearly not been completely resolved. The SF-26’s performance characteristics in Hungary offered another indication of why simply adding more downforce does not address every aspect of the car’s behaviour.
This is probably the most important task awaiting Ferrari’s engineers over the summer break: understanding how to eliminate the rear tyre degradation that continues to restrict the car under certain race conditions.
Ferrari’s ADUO 2 engine matters, but it is not the main priority
In recent days, attention has increasingly shifted towards the ADUO 2 engine and Ferrari’s dyno testing of the new power unit. Frankly, there is nothing particularly surprising about that process.
If Ferrari intends to introduce the new specification during the coming races, it is entirely normal for the power unit to have already reached an advanced stage of development. Presenting such testing as an exceptional event risks turning the routine work of any Formula 1 engine department into something more unusual than it actually is.
The more important point lies elsewhere. Even with a few additional horsepower, the SF-26 will continue to suffer if Ferrari cannot definitively resolve the behaviour of the rear tyres.
That does not make the power unit programme unimportant. Ferrari is continuing its preparations for the second half of the championship, including reliability testing connected to its planned 2026 Monza engine upgrade. But additional power can only deliver its full value if the chassis can use that performance consistently over a race distance.
Ferrari’s main task during the summer break
Ferrari therefore needs to concentrate primarily on one objective during the summer shutdown: fully understanding how to eliminate the rear tyre degradation that still limits the SF-26 in certain racing conditions.
The work that began in Barcelona demonstrated that Ferrari was moving in the right direction. Now that process needs to be completed.
Only a car capable of exploiting its tyres consistently will be able to maximise all the other developments planned for the second half of the season. The challenge is not simply to produce more peak performance, but to ensure the SF-26 can access that performance reliably across different circuits and race conditions.
Power unit efficiency matters more than outright horsepower
There is one final element that is often overlooked. This assessment is not intended to suggest that Ferrari power unit performance is unimportant. Quite the opposite.
The internal combustion component of Ferrari’s engine probably continues to represent one of the strongest benchmarks on the grid. The key point, however, is different: the current performance gap does not appear to be defined primarily by absolute power, but rather by the overall efficiency of the power unit.
This is precisely the area in which Ferrari appears to have made some of its most important progress. Performance in recent races suggests that one of the most significant steps forward has come through energy management and software strategies, to the point that Mercedes is believed to have adopted a very similar philosophy in its management of the hybrid system at Spa.
In other words, the difference is not determined only by how much horsepower is available, but by how effectively that performance is used throughout a lap.
The hardware remains fundamental, but under the current regulations software determines a substantial part of power unit efficiency by optimising energy recovery, electrical power deployment and the overall management of the hybrid system.
That is why, in our view, Ferrari’s real development story cannot be reduced simply to the ADUO 2 engine. The SF-26 began to change in Barcelona thanks to a significant aerodynamic step, and further progress will depend on completing two fundamental objectives: definitively improving rear tyre management and increasing power unit efficiency even further through software development.
Those areas will be particularly important as Ferrari prepares for the second half of the 2026 Formula 1 season, because extracting more from the SF-26 will depend on how effectively the team combines aerodynamic performance, tyre behaviour and hybrid efficiency rather than relying on any single upgrade.
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