Ferrari’s SF-26 power unit deficit resurfaced at Zandvoort, with the problem compounded by an ineffective strategy for managing hybrid energy. Charles Leclerc confirmed that, despite Ferrari experimenting with different solutions, difficulties involving the software responsible for harvesting and deployment undermined the simulation work completed at Maranello. The team ultimately failed to optimise and validate the electrical energy delivery it had been targeting.
The issue is particularly significant because hybrid deployment and software optimisation have already emerged as potentially important areas for extracting more performance from the SF-26. At Zandvoort, however, Ferrari’s attempts to unlock additional electrical energy did not deliver the expected result.
Ferrari’s hybrid system was less effective at Zandvoort than in recent races
The biggest weakness facing Ferrari during the 2026 Formula 1 season remains the power unit. It is an area where the Scuderia has not reached the level of Mercedes, which holds a considerable advantage on the propulsion side. The situation is even more demanding for Ferrari because Mercedes also directly supplies McLaren, giving another major rival access to the same power unit technology.
Ferrari had nevertheless done a good job of limiting the consequences of this weakness between Silverstone and Spa-Francorchamps. Those races demonstrated how technical optimisation could reduce the damage and prevent the SF-26 from suffering as much as might otherwise have been expected. Zandvoort was very different.
At first glance, the Dutch circuit might appear to place less emphasis on engine performance. The percentage contribution of outright power unit efficiency is indeed lower than at several other tracks. However, that does not mean the hybrid system becomes less important. The lack of repeated heavy braking zones makes regenerating electrical energy more difficult, which can subsequently leave less energy available for deployment.
That challenge had already become apparent when Ferrari identified hybrid energy management as a key performance area after Sprint Qualifying. The two familiar phases of harvesting and deployment therefore placed the Italian car under pressure even on a circuit where outright engine power was expected to carry less weight.
Regardless of how much each factor influences lap time, maximising power unit performance in Formula 1 requires Ferrari to find a clear compromise. It does not necessarily need to be the theoretically best configuration in isolation, but the one most suited to the characteristics of the SF-26. That is precisely where Ferrari struggled at Zandvoort, working through numerous adjustments without finding a genuinely effective solution.
Ferrari hybrid software validation becomes crucial for SF-26 performance
During the first and only free practice session of the Dutch Grand Prix weekend, Ferrari evaluated the various configurations previously studied in the simulator. These are solutions initially tested in-house at the Maranello factory at Via Abetone Inferiore 4 before undergoing their final assessment on the circuit, where engineers attempt to validate the hybrid architecture best suited to the car.
The process involves cross-referencing data on the SF-26’s performance under braking, through the corner and under traction, while identifying where the available recoverable energy can be used most effectively. This makes Ferrari’s wider technical optimisation work particularly complex, because the physical characteristics of the car and the electronic management of the power unit cannot be treated as completely separate areas.
Factory preparation alone is not enough. Ferrari must also understand how to make the most of each driver’s particular driving style, because Lewis Hamilton and Charles Leclerc do not necessarily require the same hybrid settings.
The same configuration may therefore work effectively for one Ferrari driver while creating greater difficulties for the other. Equally, one driver may be able to exploit a particular hybrid set-up more successfully. Ferrari’s drivers pay close attention to this aspect, and Charles Leclerc highlighted precisely that issue during the final phase of Saturday’s qualifying session.
The limitations were not confined to the hybrid system. Ferrari’s broader Zandvoort analysis showed that the new SF-26 aerodynamic package delivered its intended improvements while deeper power and energy limitations remained, making it especially important to distinguish between aerodynamic performance and the problems underneath the engine cover.
Charles Leclerc says Ferrari’s hybrid strategy was partly to blame
Tyres were not the only factor limiting Ferrari in qualifying. Part of the responsibility also fell on hybrid management, an area where a step forward had been expected but ultimately failed to materialise.
Charles Leclerc specifically drew attention to the problem after qualifying: “We got the engine strategy wrong, which we actually changed during qualifying as well: in Q3 the Power Unit did some strange things.”
Charles Leclerc had also informed Ferrari over team radio that, in his view, the battery had not operated correctly. A decision to change the software strategy controlling the hybrid part of a Formula 1 power unit is always made for a specific reason. Ferrari believed there was an opportunity to unlock more electrical energy, but the revised approach appears to have produced the opposite of the intended effect.
The challenge is that cooling requirements for the electrical components are closely linked to how those systems are being used on track. If the power unit is suddenly asked to deliver electrical energy in a substantially different way, its behaviour can become less predictable.
Ferrari therefore needed a more thoroughly validated solution before making such an important change. There was potentially additional performance available from the SF-26’s hybrid system, but the attempt to extract it at Zandvoort instead highlighted how sensitive modern Formula 1 performance has become to software calibration, harvesting and deployment.
That distinction is increasingly important for Ferrari. The underlying SF-26 can have a competitive aerodynamic platform, yet the complete package still depends on maximising every part of the power unit and hybrid system. Zandvoort demonstrated that when the margins at the front are extremely small, an unsuccessful software strategy can be enough to prevent the car from converting its available potential into lap time.
Leave a Reply