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The world of Formula 1 has introduced the simplified terminology that will be used to explain the intricate details of its upcoming 2026 regulations.

The sport is introducing what is considered the biggest rules overhaul in its illustrious history next season, featuring fresh chassis and power unit regulations and the mandatory use of 100% sustainable fuels.

The updated 1.6-litre V6 turbo hybrids, which retain the 1.6-litre V6 configuration, boast a significantly increased battery power, requiring major innovations in the aero packages.

Over a race distance, drivers will carefully oversee ERS energy – sometimes even flying laps – to achieve the optimal result.

Extensive fan consultation were carried out with a wide range of fans, including long-time followers and newcomers, to determine which phrases would improve understanding of the main elements of the new regulations.

The stated goal was to render a range of advanced technical aspects of the competition as accessible as possible for the broadest viewership.

Consequently, older technical labels for some systems – such as "x-mode and z-mode" for the moveable wings – have been discarded in favour of descriptive names that clearly indicate the real-world effect of the innovation.

Key Technical Innovations

According to rule-makers that racers will have increased agency to choose strategies regarding battery management, regeneration, and conservation.

The 2026 rules feature a set of functions that will be visually displayed on broadcast screens to enhance the audience's understanding of the on-track action.

• Passing Mode: This replaces the existing Drag Reduction System. It provides a burst of extra electrical energy deployable when a competitor is within one second the car ahead to facilitate an overtake.
• Extra Push Mode: This is a manual power boost from the hybrid system that can be utilized during offensive or defensive moves. It delivers the pilot peak output at the activation of a control.

Both of these key functions will have to be used with calculation, as the total energy is capped.

• Adjustable Aero: Both the nose and rear wings change configuration – spreading on the high-speed sections for reduced drag and top speed, and closing in the corners for maximum downforce.
• Recharge: The system can harvest energy with energy harvested under braking, or during partial power application at the conclusion of a straight or in sections where only limited engine output is used.

What's Changing on the Cars?

The 2026 cars will be smaller and lighter compared to the 2025 spec, with a distance between axles cut by 200mm to 3,400mm, width reduced by 100mm – down to 1,900mm – and the minimum weight lowered by 30kg.

Cumulative downforce is projected to decrease by approximately a significant margin, although teams will undoubtedly recover some as they develop their cars.

Aerodynamic drag has been reduced by 40%. The cars will utilize active aerodynamics – both wings will move on the straights to cut resistance and boost top speed and click back into place for maximum cornering performance.

Pirelli tyres will retain 18-inch wheel rims, but the tyres themselves will be reduced in width, by a quarter-centimetre on the front and 30mm at the rear.

What's Changing in the Engines?

The 2026 engines will have an near-equal balance in energy output by the ICE and the electrical system, up from about 20% battery contribution in the current formula.

The energy recovery system is simplified through the removal of the MGU-H, the complicated and costly component that recovered energy from the turbo.

All vehicles will be mandated to operate on 100% sustainable fuel, produced using biomass or synthetic production methods.