The cars will be smaller and lighter by 30 kilos, leading to greater efficiency and improved handling and the simpler hybrid engines —with a 50-50 split between internal combustion and electric engines— will have nearly 300 per cent more battery power. So-called "active aerodynamics" will be used to maximise the benefit of the new engines: the front and rear wings of cars will open on the straights to reduce drag and increase speed, but then close to increase downforce on corners. A manual over-ride system will generate more electrical power and assist overtaking.

"The regulations have been designed to provide closer racing among drivers, increase the competition between teams and improve the spectacle. We have opted for a higher electrical component of the power unit, a more efficient car overall and fully sustainable fuels as part of our drive towards a more sustainable future for our sport.” said the FIA's single-seater technical delegate Nikolas Tombazis.

Formula One chief Stefano Domenicali said F1 was entering "this new regulatory cycle with the sport in the strongest position it has ever been".

"The new sustainably-fuelled hybrid power unit presents a huge opportunity for the global automotive industry, the drop in fuel has the potential to be used by cars around the world and dramatically cut emissions."

He said it explained why F1 will have a record number of six engine suppliers in 2026; Mercedes, Ferrari, Renault and the new Red Bull Powertrains company with which Ford is joining forces, plus Audi and Honda. Audi and Ford have been swayed into Formula One by the new hybrid engines and the move to the new technology has persuaded Honda to reverse its decision to walk away from the sport.

"The key features of the 2026 regulations are advanced, sustainable technology and safety. Our aim, together with F1, was to produce a car that was right for the future of the sport's elite category. We believe we have achieved that goal." FIA president Mohammed Ben Sulayem commented.