F1 2026 regulations: fewer power unit components, higher risk of penalties. The FIA has reduced the number of power unit components allowed for the 2026 F1 season.

During the 2026 Formula 1 season, teams will need to pay extremely close attention to the reliability of every power unit component, as the FIA has introduced stricter limits that could have a major impact on the championship fight.

The upcoming campaign represents a radical shift across several areas that define a modern F1 car. The most significant changes come on the engine side, which has been completely overhauled under the new regulations. However, the FIA has not made life easier for teams, as it has reduced the number of power unit components available for use throughout the 2026 season.

Over the course of a 24-race calendar, engines are regularly replaced and reused. Teams typically rotate power units strategically, using more worn components during certain practice sessions in order to save mileage on fresher elements intended for qualifying and races.

From 2026, the engines will be entirely different, marking a new technical era for manufacturers. The electrical component will now account for 50% of the total power output, making efficiency an absolutely crucial factor. In addition, the MGU-H — the system that previously recovered energy from exhaust heat — will no longer be part of Formula 1 power units.

The FIA’s power unit limits for 2026

As outlined in the sporting regulations for next season, the FIA has defined the maximum number of replacement elements allowed for each engine component. In 2026, the number of power unit parts that F1 teams can use across the entire championship has been reduced.

The imposed limits are as follows (with last year’s figures in brackets):

• Internal combustion engine (ICE) – 3 units per season (4 in 2025)
• Turbocharger (TC) – 3 units per season (4)
• Exhaust (EXH) – 3 units per season (8)
• Motor generator unit – kinetic (MGU-K) – 2 units per season (4)
• Control electronics (CE) – 2 per season (2)
• Energy store (ES) – 2 per season (2)

The most significant reductions concern the thermal side of the hybrid engine. This limitation could pose serious challenges for teams that are still in the process of fully understanding and optimising the new-generation power units.

A scenario in which several drivers take grid penalties in the latter part of the season is far from unrealistic, particularly if additional components are required beyond the allocated quota. With reliability now more critical than ever, managing engine mileage could become one of the decisive factors of the 2026 Formula 1 championship.