In the 2026 Formula 1 season, teams will have to pay close attention to the reliability of the various power unit components.
The upcoming campaign represents a radical shift across many areas that define a modern Formula 1 car. Some of the most significant changes come from the power unit side, which has been completely overhauled. The FIA has not offered any concessions to Formula 1 teams, instead reducing the number of power unit components available to each squad for the 2026 season.
Power units are replaced and also reused across the 24 races on the calendar. Teams typically manage a rotation strategy, fitting more heavily used components during practice sessions in order to preserve mileage on newer elements for qualifying and races.
From 2026, the engines will be entirely different, representing a major challenge even for the manufacturers themselves. The electrical side of the power unit will now account for 50% of the total output, making efficiency a decisive factor. In addition, the MGU-H, the component responsible for recovering energy from exhaust heat, will no longer be part of Formula 1 power units.
The FIA-imposed limits on power units
As outlined in the sporting regulations for the upcoming season, the FIA has defined the maximum number of replacement components permitted for each engine element. In 2026, the number of power unit components that Formula 1 teams may use throughout the season will be reduced.
The limits imposed are as follows, with the figures from the previous season shown in brackets:
- Internal combustion engine [ICE] – 3 units per season (4 in 2025)
- Turbocharger [TC] – 3 units per season (4)
- Exhaust system [EXH] – 3 units per season (8)
- Kinetic motor generator unit [MGU-K] – 2 units per season (4)
- Control electronics [CE] – 2 units per season (2)
- Energy store [ES] – 2 units per season (2)
The reductions mainly affect the thermal side of the hybrid power unit. However, this limitation could create difficulties for teams that are still in the process of fully understanding and refining these new power units. It is not unrealistic to imagine a scenario in which several drivers incur grid penalties during the latter part of the season due to the use of additional components beyond those permitted by the regulations.
As the sport enters this new era, the balance between raw performance and long-term durability will likely decide the championship. Teams that fail to master the reliability of their new 50/50 hybrid split may find themselves starting from the back of the grid more often than they would like.
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