Overtake Mode & Active Aero - Decoding F1's Updated Regulatory Jargon

The world of Formula 1 has introduced the new vocabulary that will be used to describe the advanced features of its revolutionary 2026 regulations.

The championship is implementing what is arguably the largest regulation change in its long history for the 2026 campaign, featuring revised car and engine specifications and the required adoption of fully sustainable fuels.

The new power units, which retain the 1.6-litre V6 turbo hybrid, boast a significantly increased battery power, necessitating major innovations in the vehicles' aerodynamic design.

During grand prix events, drivers will carefully oversee ERS energy – sometimes even hot laps – to extract the peak performance.

Wide-ranging research were carried out with a mix of viewers, including long-time followers and newcomers, to determine which terminology would aid comprehension of the central aspects of the upcoming rules.

The key objective was to render a range of advanced features of the competition as easy to grasp as possible for the broadest viewership.

Consequently, previous placeholder terms for certain devices – such as "alphabetical mode names" for the adjustable aero – have been abandoned in favor of straightforward terms that succinctly convey the actual function of the system.

Key Technical Innovations

The FIA states that drivers will have greater control to choose strategies regarding power usage, regeneration, and saving energy.

The new regulations mandate a range of settings that will be clearly indicated on TV overlays to improve the viewers' comprehension of the on-track action.

• Passing Mode: This takes over from the present overtaking aid. It provides a burst of extra electrical energy accessible when a competitor is less than a second the vehicle in front to assist with an overtake.
• Extra Push Mode: This is a on-demand battery discharge from the hybrid system that can be deployed for offensive or defensive moves. It provides the driver maximum power at the click of a switch.

Both of these key functions will have to be managed carefully, as the available electrical charge is strictly limited.

• Active Aero: Both the nose and rear wings adjust their angles – opening on the long straight sections for reduced drag and top speed, and sealing in the turns for peak grip.
• Energy Harvesting: The system can replenish their battery with regenerative braking, or during partial power application at the end of straights or in sections where only partial power is used.

Car Design Evolution

The vehicles for the new era will be reduced in size and weight compared to the 2025 spec, with a car length cut by 200mm to 3,400mm, overall width reduced by 100mm – down to 1,900mm – and the minimum weight lowered by 30kg.

Total aerodynamic grip is expected to drop by approximately fifteen to thirty percent, although teams will undoubtedly recover some as they optimize their packages.

Air resistance has been cut by 40%. The vehicles will utilize active aerodynamics – both wings will open on the straight sections to cut resistance and increase straightline speed and revert into place for maximum cornering performance.

Wheels will keep 18-inch rims, but the rubber compounds will be reduced in width, by 25 millimetres on the front axle and three centimetres on the rear.

What's Changing in the Engines?

The 2026 engines will have an approximate 50-50 split in energy output by the ICE and the ERS, up from about 20% battery contribution under present rules.

The ERS setup is streamlined through the elimination of the complex turbo energy recovery device, the intricate and expensive unit that harvested power from the turbo.

Every car on the grid will be required to run on carbon-neutral fuel, produced using biomass or synthetic industrial processes.