On the 2nd of March 2024, during the Bahrain Grand Prix in Sakhir, Max Verstappen from Red Bull Racing took the lead in his RB20 car, followed closely by Charles Leclerc from Ferrari in his SF-24 vehicle.
The upcoming 2026 Formula 1 engine regulations will introduce a new driver-operated boost system called ‘override mode’. The architects of these regulations have already announced that the power output of the turbocharged 1.6-litre V6 internal combustion engine will be reduced from approximately 560kW to 400kW (535bhp).
To compensate for this power reduction, there will be a greater focus on the battery component of the F1 power unit. The battery’s power will increase from 150kW to 350kW (470bhp), despite the removal of the MGU-H component.
In the latest draft of the 2026 engine regulations, the FIA has revealed plans for a driver-operated KERS-style boost system that takes advantage of the power unit’s electrical aspects. According to Article 5.4.8 of the draft regulations, the new ERS-K system will allow drivers to reach top speeds of 345km/h (215mph) under normal use. However, an ‘override mode’ will be available, which enables drivers to access additional battery power and reach speeds of up to 355km/h (220.5mph).
This boost system is similar to IndyCar’s push-to-pass mechanism and harkens back to F1’s earlier experiments with hybrid power through KERS from 2009 to 2013. The ‘override mode’ adds a strategic element to energy management, as drivers have control over when to activate the boost. They can use it for offensive and defensive maneuvers during wheel-to-wheel battles or simply to enhance their car’s performance and improve lap times.
While the 2026 engine regulations prioritize the electrical aspects of the power unit, relying too heavily on the ‘override mode’ can put drivers at risk of depleting their energy reserves before they can recharge their battery. It is important for drivers to manage their energy efficiently to avoid an energy deficit during normal deployment.
The finalization of the 2026 engine regulations is still pending, but the shift towards increased electrification has attracted Audi and Ford (through Red Bull Powertrains) to join the existing four engine manufacturers.