Overview
- The FIA, teams and Formula One Management, which agreed in principle Friday, plan for 2027 power units to add roughly 50 kW to the internal combustion engine and trim about 50 kW from the battery-based Energy Recovery System.
- Raising fuel flow to boost engine output would increase fuel use over a race, which could force larger tanks and new chassis even as several teams hoped to carry over their 2026 cars.
- Options under study to ease that packaging squeeze include limited cost-cap relief for new chassis work, a shorter race distance to keep current tank sizes viable, or a qualifying-only fuel-flow increase as a bridge step.
- Changing the combustion target also complicates the ADUO catch-up scheme that grants extra development to lagging power-unit makers, since any reset could advantage those already granted 2026 allowances.
- Drivers pushed for change after energy-management driving and huge closing speeds produced safety worries, while Miami’s tweaks helped; some, like Lando Norris, still want far less battery focus, yet bosses such as Mattia Binotto and Fred Vasseur say many drivers are content with the new rules.