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

Formula 1 has unveiled the official language that will be used to explain the advanced features of its upcoming 2026 technical rules.

The racing series is embarking on what is arguably the largest regulation change in its illustrious history starting in 2026, featuring new chassis and engine rules and the mandatory use of fully sustainable fuels.

The new power units, which retain the hybrid V6 layout, boast a significantly increased battery power, necessitating significant developments in the cars' aerodynamics.

During grand prix events, drivers will tactically deploy ERS energy – including during qualifying laps – to achieve the peak performance.

Wide-ranging research were undertaken with a mix of viewers, including dedicated enthusiasts and casual observers, to identify which terminology would make things clearer of the main elements of the upcoming rules.

The stated goal was to present a set of intricate new areas of the competition as straightforward as possible for the widest audience.

Consequently, initial designations for specific components – such as "modes labelled X and Z" for the moveable wings – have been discarded in favor of descriptive names that clearly indicate the real-world effect of the technology.

Key Technical Innovations

Regulators explain that drivers will have increased agency to make decisions regarding battery management, energy recovery, and conservation.

The upcoming changes introduce a series of modes that will be shown on broadcast screens to improve the audience's understanding of the on-track action.

• Attack Mode: This takes over from the present overtaking aid. It provides a surge of additional ERS power deployable when a car is less than a second the car ahead to execute an pass.
• Extra Push Mode: This is a manual energy deployment from the hybrid system that can be deployed for attack or defence. It provides the driver full engine and battery energy at the activation of a control.

Both of these crucial modes will have to be deployed strategically, as the available electrical charge is restricted.

• Active Aerodynamics: Both the front and rear wings move automatically – spreading on the high-speed sections for low aerodynamic resistance and increased velocity, and sealing in the corners for optimal cornering performance.
• Recharge: Drivers can recharge the energy store with regenerative braking, or during partial power application at the straight's end or in corners where only partial power is used.

Car Design Evolution

The next-generation machines will be reduced in size and weight compared to the 2025 spec, with a wheelbase cut by 200mm to 3,400mm, width narrowed by 100mm – down to 1,900mm – and the car weight lowered by 30kg.

Cumulative downforce is projected to decrease by approximately a significant margin, although teams will inevitably claw this back as they optimize their packages.

Air resistance has been cut by 40%. The vehicles will employ adjustable aero systems – front and rear wings will move on the straights to cut resistance and enhance velocity and click back into place for optimal grip in corners.

Tyres will continue to use the current rim size, but the tyres themselves will be narrower, by 25 millimetres on the front axle and 30 millimetres on the rear axle.

What's Changing in the Engines?

The new power units will have an approximate 50-50 split in power produced by the ICE and the electrical system, up from about one-fifth electric power in the current formula.

The hybrid system is made less complex through the deletion of the MGU-H, the intricate and expensive device that harvested power from the turbo.

Cars will be required to run on 100% sustainable fuel, produced using plant-based materials or synthetic production methods.