The FIA has issued another significant revision of the 2026 Formula 1 technical regulations, modifying rules that govern electrical energy deployment and recovery, engine air intakes, exhaust systems, sustainable fuels, oil approval and composite materials. The updated regulations were published on the governing body’s website on August 5, introducing changes that reach several of the most technically sensitive areas of the new-generation cars.
Among the most relevant adjustments are revised electrical power limits at high speed and a lower energy-recovery allowance in Sprint and conventional Qualifying sessions. The changes are particularly important in a regulatory era in which energy management has become a central performance variable for the teams.
FIA changes 2026 F1 electric power and energy recovery rules
One of the main revisions concerns Article C5.2.8 iii, which defines the electrical power curve during periods when power is limited. The provision now applies during any such limited-power phase.
For races and Sprint sessions, maximum electrical output is set at 250 kW up to 310 km/h. From 310 km/h to 340 km/h, the permitted output progressively decreases from 250 kW to 100 kW, while above 345 km/h electrical power is cut completely.
The FIA has also modified Article C5.2.10 ii. Maximum recoverable energy per lap in Sprint Qualifying and conventional Qualifying is reduced from 5 MJ to 4 MJ. The restrictions operate only in specified sections of the circuit and according to conditions established through Sporting Regulation Article B7.2.
Under Article B7.2.1 b, teams must be informed by the FIA at least four weeks before an event about the applicable power restrictions and energy-recharge allowances. That advance notice gives competitors time to prepare their energy-management strategies around the requirements of each circuit.
The importance of those decisions is clear under the current power-unit architecture. Ferrari’s own SF-26 technical specification illustrates how substantial the electrical component has become, making deployment and harvesting an increasingly important part of overall car performance.
Air intake and exhaust regulations receive further clarification
The FIA has also refined the wording surrounding engine air supply. Article C5.6.1 now specifies that air supplied to the engine can enter through a maximum of two intakes positioned above the driver’s head, with both required to be completely visible when the car is viewed from the front.
Antennas and sensors mounted on the Survival Cell will not be treated as obstructions when the FIA assesses whether those intakes satisfy the visibility requirement.
Exhaust-system wording has also been tightened. Under Article C5.8.2, all exhaust fluids originating from the turbine and wastegate must leave the car exclusively through the exhaust pipe, with accidental leakage being the stated exception.
2026 sustainable fuel rules and approval process revised
A substantial part of the latest regulatory update concerns Formula 1’s fuel framework. Article C16.1.2 maintains the requirement for 100% sustainable fuel while prohibiting chemical additives intended to increase power and mixtures containing fossil-derived components.
The detailed chemical specifications and limits for impurities have been transferred to Article C16.3.3, leaving the earlier provision more specifically focused on sustainability requirements and traceability. As a consequence of that restructuring, the previous Articles C16.3.3 and C16.3.4 have moved to C16.3.4 and C16.3.5 respectively, covering permitted oxygenates and non-sustainable additives.
The approval procedure has also been expanded. Article C16.4.1 now applies to pre-season testing, requiring two separate five-litre samples in suitable containers to be submitted to an FIA-designated laboratory.
A team cannot use a fuel during competition or testing without written FIA approval. Article C16.4.2 additionally requires the approved fuel to be used for at least one complete test day covering 300 kilometres. New Article C16.4.3 extends those requirements to TCC tests as well.
Sustainable fuel is one of the defining elements of Formula 1’s current technical generation, alongside the much greater electrical contribution from the power unit. Those changes have forced teams to balance efficiency, deployment and recovery in ways already visible in Ferrari SF-26 energy-management analysis.
Engine oil approval also falls under revised FIA controls
The regulatory framework extends similar compliance requirements to engine oil. Teams must provide two one-litre samples to approved laboratories so that the fluid can be checked against the applicable technical specifications, with the relevant requirements referenced across Articles C16.9.1b and C16.6 to C16.8.
The intention is to ensure that the fluids used alongside the new-generation power units remain within the defined regulatory composition and approval framework rather than becoming another potential area for performance-enhancing formulations outside the permitted limits.
FIA changes composite material and nanoscale definitions
The latest revision also reaches the Composite Materials section of the technical regulations. The FIA has removed the previous 100-nanometre limit relating to nanoscale reinforcements and introduced more precise terminology for several material categories.
Glass is now formally defined as an amorphous, non-crystalline material, with vitreous recognised as a synonymous term. Additional revisions to material-composition limits specify how permitted percentages can be measured by weight, atom count or volume fraction depending on the material concerned.
For Metal Matrix Composites, the minimum proportion of other compounds has been increased from 0.5% to 2% by volume.
A new Nanoscale category now covers elements with at least one dimension below 100 nanometres. The definition of Polymeric Material has also been rewritten. Rather than simply describing any thermoplastic or thermoset as a polymeric material, the regulations now define it through structures made from covalently bonded organic or inorganic monomer chains, with that molecular arrangement determining their distinctive viscoelastic behaviour.
FIA continues refining the 2026 technical framework
The August update demonstrates how the 2026 regulations continue to evolve even after the championship has entered its summer break. The changes do not concentrate on a single component or performance area, instead extending from electrical deployment and harvesting through fuel homologation to materials terminology and construction requirements.
For Ferrari and its rivals, the most immediate sporting implications are likely to centre on the energy provisions because the new power units place such a heavy emphasis on electrical management. Teams have already explored markedly different hybrid strategies, as illustrated by the contrasting Ferrari and McLaren energy approaches.
The broader significance, however, is that compliance work continues across almost every part of the car. From how energy can be recovered and deployed to which fuels, oils and advanced materials can be used, the FIA’s latest revision adds another layer of detail to Formula 1’s new technical era.
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