The most complex regulations in Formula 1, to be implemented in 2026, are creating difficulties for ‘customer’ teams. Unfortunately, the FIA guarantees that these teams have access to the same engine specifications as factory teams, but the complexity of the new systems means that experience becomes a key factor.
A clear example is the case of McLaren and its engine partner Mercedes. The difference between teams currently lies not only in the equipment but also in how this potential is utilized. Historically, factory teams have enjoyed advantages, although there have been moments when ‘customer’ teams have managed to win championships, such as Brawn in 2009 or Red Bull during their seasons with Renault.
With the hybrid engine era, the FIA introduced technical regulations that required manufacturers to provide the same engine specifications to ‘customer’ teams. However, the new technical regulations for 2026 have changed this dynamic, not only among different engine suppliers but also in the relationship between manufacturers and ‘customer’ teams.
A notable aspect is the increased role of the MGU-K, which has made energy management a key performance factor. This requirement necessitates much more sophisticated software systems than those used until now. While ‘customer’ teams still have manufacturer engineers by their side, the responsibility for optimizing the engine falls on them.
In McLaren’s case, team principal Andrea Stella has emphasized that his team’s performance deficit cannot be attributed solely to the car. He indicated that track conditions influence their ability to extract performance and that constant communication with HPP, the engine supplier, is necessary to ensure that the system’s offerings are maximized.
Stella has also confirmed that McLaren is awaiting updates to its Mercedes engine specification, which could improve its engine exploitation. Although it may only be a reliability improvement, there remains uncertainty regarding engine performance under competitive conditions.
Ultimately, the new generation of engines has once again highlighted the importance of the accumulated knowledge by factory teams. Regulations may guarantee access to the same engines, but they cannot legislate on the know-how required to extract maximum potential.
Written by FormulaRapidaAI










