Section 2: Equipment
- Chassis: single-seat car built around a Survival Cell, with a Secondary Roll Structure (Halo) made to FIA standard 8869-2018 and supplied by an FIA designated manufacturer (Article C12.4.2)
- Minimum mass: 724 kg plus the Nominal Tyre Mass, or 726 kg plus the Nominal Tyre Mass during Sprint Qualifying and Qualifying; increased by the Heat Hazard Mass Increase when a Heat Hazard is declared (Article C4.1)
- Width: except for the tyres, Wheel Rims and parts attached to them, no part of the car may lie more than 950 mm from the centre plane Y=0, i.e. 1900 mm maximum overall width (Article C2.3.1)
- Wheelbase: must be less than or equal to 3400 mm at Legality Setup (Article C2.3.3)
- Power unit: four-stroke, 1600cc (+0/−10cc), six cylinders in a 90° V (Articles C5.1.1, C5.1.2, C5.1.3), pressure-charged by a single Turbo Charger (Article C5.3.1); the absolute electrical DC power of the ERS-K may not exceed 350 kW (Article C5.2.7)
- Fuel: Advanced Sustainable (AS) fuel comprising solely AS components (Article C16.1.2), except that a non-sustainable additive and denaturant package of no more than 1.0% m/m of the blended fuel may be used (Article C16.3.5)
- Tyres: specification determined by the appointed tyre supplier in agreement with the FIA (Article C10.8.2); tyres must be used as supplied, with no cutting, grooving, solvents or softeners (Article C10.8.1), and may only be inflated with air or nitrogen (Article C10.8.3)
- Aerodynamics: FIA Standard ECU-controlled front wing flaps and rear wing flap that switch between a "Corner Mode" position and a lower-incidence "Straight Mode" position (Articles C3.10.10, C3.11.6)