The FIA has confirmed a significant change to Formula 1’s engine regulations for the 2027 season.
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The championship will move away from the strict 50/50 power split between the internal combustion engine and electrical systems that featured in the 2026 rules.
In a statement, the FIA explained the planned adjustments: “The measures agreed in principle today for 2027 would see a nominal increase in internal combustion engine (ICE) power by [approximately] 50kW alongside a fuel-flow increase and a nominal reduction of the energy recovery system (ERS) deployment power by [approximately] 50kW.”
The change shifts power generation back towards the combustion engine while still leaving the hybrid system more influential than the pre-2026 era. The modification is aimed at reducing the so-called “clipping” problem that has been widely criticised since the current power unit rules were introduced.
Minor rule tweaks were applied before the Miami Grand Prix, intended to improve drivability and safety, but their immediate impact appeared limited at that circuit. The 2027 adjustments are part of a broader refinement process the FIA and stakeholders have been undertaking to make the regulations safer, fairer and more intuitive for drivers and teams.
FIA president Mohammed Ben Sulayem has also mentioned more far-reaching possibilities for future seasons, including proposals to accelerate further changes to the engine formula and even the potential reintroduction of V8 engines from 2013-era regulations. Those ideas remain under discussion and would require further consultation.
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FIA statement on F1 engine rules changes for 2027
A number of proposals to introduce further evolutionary changes to the 2026 FIA Formula One World Championship regulations have been agreed in principle following an online meeting convened by the FIA today and attended by Team Principals, Formula 1 Management and representatives of the sport’s five power unit manufacturers.
The meeting began with a review of the recently agreed rule changes introduced at the Miami Grand Prix. These measures, designed to improve safety and reduce excessive harvesting, were deemed to have delivered improved competition and represent a positive step in the continued refinement of the 2026 framework. The FIA also reported that no material issues or safety concerns had been identified following implementation in Miami.
Further evaluation of the Miami package is ongoing with a view to the introduction of further adjustments at future events. These include improved start-safety revisions and measures to improve safety under wet conditions. These will be communicated to teams once defined.
Turning to the longer-term refinement of the regulations, it was agreed in principle to introduce evolutionary changes to the rules regarding hardware components, making competition safer, fairer and more intuitive for drivers and teams.
The measures agreed in principle today for 2027 would see a nominal increase in Internal Combustion Engine (ICE) power by ~50kW alongside a fuel-flow increase and a nominal reduction of the Energy Recovery System (ERS) deployment power by ~50kW.It was agreed that further detailed discussion in technical groups comprising teams and Power Unit Manufacturers is required before the final package is decided.
The final proposals presented during today’s meeting are the result of a series of consultations over the past few weeks between the FIA and multi-stakeholders with input from F1 drivers.
The next step is to formally present these regulatory changes, once refined, for a World Motor Sport Council e-vote once the power unit manufacturers voted on the package.
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