F1 agrees sweeping 2027 and 2028 rule changes to fix power unit concerns

Written by Kavi Khandelwal

The FIA, Formula One Management, and the ten competing teams have dramatically shifted the goalposts for the sport’s next generation by agreeing to a comprehensive package of structural changes to the F1 Technical, Sporting, and Financial Regulations spanning the 2027 and 2028 seasons.

Credit: Fédération Internationale de l'Automobile

Following intensive discussions that ignited during the opening rounds of the current 2026 season, the sport's power players have been forced to react to severe vulnerabilities exposed within the 2026 engine framework.

Initial track data and virtual testing highlighted glaring concerns regarding energy management and fuel energy flow characteristics, triggering deep fears that the heavily electrical power units would leave drivers facing awkward, artificial deficits and premature battery drainage on straightaways. Qualifying sessions risked devolving into tactical energy-saving exercises rather than flat-out pushes for absolute mechanical limits.

To preserve the spectacle and safeguard competitive integrity, this newly minted consensus introduces a critical, staged rebalancing of the Internal Combustion Engine (ICE) and the Energy Recovery System (ERS) across consecutive campaigns, shifting away from the rigid 53/47 power split originally targeted for 2026.

Under the revised framework, the maximum power ceiling of the ICE will be raised from the baseline 2026 target of 400kW up to 420kW in 2027, before climbing further to 450kW for the 2028 campaign. This physical output spike is directly supported by structured increases to the fuel energy flow rate, which will jump by 5% in 2027 and expand to a 13% increase by 2028 to keep the V6 heavily charged.

Crucially, the revisions aim to ensure qualifying trim remains a completely flat-out, uncompromised pursuit of mechanical limit without diminishing the close wheel-to-wheel racing promised by the underlying chassis concepts.

Simultaneously, the burden on the electrical architecture is being scaled back to prevent severe straight-line performance drops. The baseline maximum power of the kinetic motor generator unit (MGU-K) will decrease from 350kW to 300kW across both seasons, though a crucial 350kW ceiling remains active specifically for a driver-activated Overtake Mode.

To ensure the hybrid systems can support this updated operational profile, maximum electrical harvesting power will be boosted from 350kW up to 375kW in 2027, reaching 400kW by 2028. These combined adjustments effectively alter the overall ICE-to-electrical power ratio to a more conventional 58/42 split in 2027, ultimately resting at a 60/40 divide for 2028.

Credit: Formula One

The emergency package goes beyond the power unit architecture, pulling supporting measures regarding engine supply conditions, trackside race operations, and the corresponding cost-cap financial frameworks into its orbit to prevent an unsustainable spending war. This immediate intervention underscores a collective admission that the drastic 50-50 power split initially designed for the 2026 overhaul required urgent refinement before even hitting a competitive grid.

By engineering a phased transition over 2027 and 2028, governing bodies and engine manufacturers are actively stepping back from the cliff-edge of potential performance bottlenecks while keeping the sustainable fuels and high-electrical hybrid ethos firmly alive.

With the paddock demanding immediate design certainty, the FIA has confirmed it will now expedite the formal legislative approval process to give technical directors the maximum possible lead time to rewrite their engineering blueprints.

The entire sweeping package of regulatory revisions will be formally submitted for ratification to the World Motor Sport Council on June 23 during its upcoming assembly in Macau, cementing the blueprint for the sport's immediate mechanical future.

This unprecedented regulatory pivot reflects the complex nature of modern grand prix engineering, where the theoretical targets of simulation must constantly adapt to the harsh reality of physical track performance. The collaborative spirit shown by the teams and governing bodies highlights a shared commitment to keeping the pinnacle of motorsport highly competitive, technically ambitious, and deeply engaging for the global fan base.

Technical teams across the grid will now pivot their resources toward these newly defined boundaries, initiating a intense engineering race that will shape the competitive hierarchy well into the next decade.