FIA approves changes to future F1 power unit regulations

The World Motor Sport Council has formally confirmed a set of updates to Formula 1’s power unit regulations, following recent agreement between Formula 1, the FIA and FOM on the future direction of engine development.

The changes will gradually shift the balance between the internal combustion engine and the hybrid system, with the long-term target set for 2028. By then, the split is expected to move towards approximately 60 percent from the combustion engine and 40 percent from the MGU-K system. This transition will be introduced in two steps.

For the 2027 season, fuel flow will increase by around five percent, raising combustion engine output from roughly 400 kW to around 420 kW. At the same time, electrical power from the battery will be reduced from 350 kW to 300 kW in standard conditions, with the exception of overtaking modes. A further step in 2028 will see fuel flow increased by around 13 percent in total, allowing combustion power to rise to approximately 450 kW.

Some adjustments will already come into effect earlier, including a new “boost” mode for wet conditions. The system is designed for safety purposes in low-grip or poor-visibility situations, ensuring cars maintain performance levels rather than gaining additional overall power. In these conditions, the traditional overtaking mode will be disabled.

Another change affects pre-season testing. Due to the complexity of the current regulations, the number of testing days ahead of the next season will be increased from three to four, giving teams additional time to adapt to the evolving technical framework.

The FIA also confirmed that discussions are ongoing regarding the long-term direction of Formula 1 power units beyond 2030. Concepts including V8 engines powered by sustainable fuels remain part of the wider evaluation process, reflecting what the governing body describes as a willingness from all stakeholders to shape the next chapter of the sport.