Financial, power unit, aerodynamic, geometric, and safety regulations were altered for the 2026 season.
Financial regulation For 2026, the Formula One cost cap for team operational expenditures was increased from $135 million to $215 million. This was primarily due to inflation adjustments and the inclusion of costs that were previously exempted from the cap. Key expenses remaining outside the cost cap include driver salaries, the salaries of the three highest-paid team members, marketing, travel and hospitality costs, as well as infrastructure investments. A separate cost cap for power unit manufacturers, which was introduced in , was also increased from $95 million to $130 million from 2026 onwards to support the development of the new hybrid engines.
Technical regulations Power units New power unit regulations have been introduced for the 2026 season. The new power units still produce over , although the power comes from different sources. The engine regulations saw the turbocharged 1.6-litre V6
internal combustion engine configuration used since retained. However, the
MGU-H (Motor Generator Unit – Heat), which has also been in use since 2014, has been removed, while the
MGU-K (Motor Generator Unit – Kinetic) output increased to from . The power output of the internal combustion part of the power unit decreased to from . Fuel flow rates are measured and limited based on energy, rather than mass of the fuel itself. The power units use a fully
sustainable fuel being developed by Formula One. The power units are expected to recover twice as much electrical energy as before. The
Japanese Grand Prix saw
Oliver Bearman crash at a high speed due to a speed differential that was caused by him using more electrical energy than
Franco Colapinto, who opted to harvest his energy. The power unit changes that mandated the increased usage of the battery and electric power deployment modes came under scrutiny from drivers. The FIA held a review with power unit developers on 9 April regarding potential refinements to the regulations. One of the solutions was to reduce the deployment rate of electrical energy while increasing the amount that can be harvested while undergoing "super clipping", a phenomenon that occurs when the battery is being charged on full throttle against the engine. Three further meetings were held on 15, 16 and 20 April, where further options would be evaluated and agreed on by team representatives, the FIA, Formula One Management, and power unit manufacturers. Going into the
Miami Grand Prix, changes were announced to be made to the power unit. Those include an increase to the "super clipping" limit from to . It intends to reduce its duration to 2–4 seconds per lap. Though the cars will still lose top speed on the straights, this reduces the need to apply lift and coast as the speed difference is considered much more natural. For qualifying, the harvesting limit was reduced from to , with the potential to reduce it further for some races.
Car size and aerodynamics On 6 June 2024, the 2026 car concept was revealed. The concept featured new active aerodynamics in both the front and rear wings. The concept saw the elimination of the
drag reduction system, being replaced by a new overtake mode, initially referred to as manual override mode. The wheelbase was reduced from to , the width was reduced from to , and the minimum mass was reduced by . The tyres' widths were also reduced by on the front pair and by on the rears. The floor reduced
ground effect to ease the issues cars have suffered with
porpoising. In October 2024, FIA announced that the downforce reduction of the 2026 cars compared to the – generation of cars would be less than initially proposed for performance and safety reasons. Later in the month, the FIA confirmed that the reduction in downforce from the 2026 generation of cars would be around 15%, a significantly smaller reduction than the originally drafted regulations which the FIA claimed had given the 2026 cars downforce reduction of over 40% compared to their predecessors. This would make the 2026 cars approximately two seconds slower a lap than the 2022–2025 generation of cars rather than the four seconds slower initially envisaged. On 17 December 2025, Formula One announced the official terms describing features of the 2026 cars. The term "boost mode" is used to describe the normal deployment of the energy recovery system (ERS) to defend or attack; "active aerodynamics" (or simply "active aero") to describe the moveable front and rear wing elements – in both higher and lower drag/downforce configuration; "recharge" to describe when a car is harvesting electrical energy; and "overtake mode" to describe a mode where extra energy stored is used in order to help one driver overtake another, but only if the driver behind is within one second of the one ahead (similar to pre-2026 DRS deployment rules).
Safety features The regulations for the front impact structure (FIS) were updated with the intent to enhance
safety during crashes. A two-stage FIS design has been introduced to address previous issues where the structure detached near the survival cell after a primary collision, leaving the vehicle vulnerable to further impacts. Side intrusion protection, particularly around the cockpit and fuel cell was also improved. These upgrades aim to shield critical areas of the car during side collisions, while maintaining the vehicle's weight. The roll hoop's strength was improved, withstanding loads increased from 16
g to 20
g, aligning with safety standards of other
single-seater series. The load testing requirements were raised from 141 kN to 167 kN. To further safeguard drivers and
track marshals, lateral safety lights were mandated. These lights display the
energy recovery system (ERS) status of a car when it stops on track, providing visual indicators of potential electrical risks, especially in emergency situations. • In order to discourage teams leaving excessive amounts of exposed black carbon on their cars in order to save weight, the FIA mandated that a minimum of 55% of the surface area when viewed from the side and above must be covered by painted or stickered liveries. • Driver cooling vests are mandated when the FIA declares a heat hazard during a race weekend. Prior to 2026, the cooling vest was optional. Additionally, the vest underwent a redesign. • For 2026, stewards have the option to initiate a review based on new evidence. Under the previous version of the ISC, a competitor had to submit a right of review request for any decision to be reviewed. The option for competitors to submit a right of review remains in place. Additionally, an "out of competition" stewards panel was introduced for time sensitive decisions that cannot wait until the next event. • In 2026, the requirement to make a minimum two-stop strategy at the
Monaco Grand Prix was dropped. This was implemented in the
2025 race in an effort to promote better racing, but teams and drivers considered that it did not improve the racing quality and overtake opportunities. ==Season summary==