F1 2026 Regulations
The 2026 season introduces the biggest Formula 1 regulation changes in a decade. New power units, active aerodynamics and smaller cars will transform the competition.
New Power Units
The 2026 season introduces revolutionary changes to power units. Electrical power increases to 50% of total car power (from the current ~20%). The V6 1.6 turbo combustion engine remains, but the MGU-H is removed, simplifying the design. The MGU-K now delivers three times more electrical power - approximately 350 kW. This is the biggest powertrain change since 2014.
Active Aerodynamics
The front and rear wings of every car change their angle of attack on every lap: on the straights they open to cut drag (Straight Mode), and in the corners they close for downforce (Corner Mode). Movable aerodynamic parts are not new to F1 in themselves - DRS opened a rear-wing flap from 2011, and in 2009-10 drivers could adjust the front wing. What is new is that both wings work this way for every driver, all the way round the lap, so DRS is gone.
Overtake Mode and Boost
Overtake Mode took over from DRS as the overtaking aid. A driver who is less than a second behind the car ahead at a designated point on the track can use extra electrical energy (+0.5 MJ) for the whole of the next lap and hold a high speed for longer. Boost is a button with which the driver decides when to use the energy from the battery - to attack or to defend, all at once or at several points of the lap.
Smaller and Lighter Cars
Minimum car weight drops from 798 kg to 768 kg. Wheelbase is reduced by 200 mm, and car width from 2000 mm to 1900 mm. Smaller dimensions are intended to improve racing on narrow tracks and make overtaking easier. A shorter and narrower car is also more agile in slow corners.
Narrower Tyres
F1 has raced on 18-inch tyres since 2022, and that stays. What changes in 2026 is the width: the tyres are 25 mm narrower at the front and 30 mm narrower at the rear. Pirelli supplies them with new compounds tailored to the new aerodynamics. A wider operating window is meant to reduce overheating in wheel-to-wheel battles, and the new construction is meant to cope better with running in dirty air behind another car.
Sustainable Fuel
From 2026, Formula 1 requires the use of 100% sustainable fuel. The fuel must be produced from biological waste, municipal waste, or through atmospheric CO2 capture. This is a key element of the FIA's strategy to achieve net zero emissions by 2030.
Budget Cap
The FIA's 2026 Financial Regulations (Art. 4.2) set the budget cap at $215 million for a season of up to 24 races. The base cap used to be $135 million, but the jump is mostly on paper: most of the difference is spending that used to be excluded from the cap and now counts towards it.
Summary of Changes
The F1 2026 technical regulations are a response to the need for closer and more exciting competition. Active aerodynamics gives every car less drag on the straights, and Overtake Mode, with its extra electrical energy, took over from DRS as the overtaking aid. The greater share of electrical power promotes technology that can be transferred to road cars.
Smaller and lighter cars are intended to improve the quality of racing, especially on tight street circuits like Monaco and Singapore. The requirement to use 100% sustainable fuel makes Formula 1 a platform for innovation in environmentally friendly propulsion.