Power Unit Information for Hungarian Grand Prix

Doc 3 - Power Unit Information

2026 Hungarian Grand Prix

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Summary

Document detailing power unit energy limits, power reduction rates, overtake zones, and sector-specific exceptions for the 2026 Hungarian Grand Prix.

Explanation

This document, issued by the FIA Race Director, provides teams and Power Unit Manufacturers (PUMs) with the specific power unit parameters for the 2026 Hungarian Grand Prix. It defines maximum recharge per lap (9.0 MJ in race with overtake active), maximum PU power reduction rate (100 kW/s), and the maximum DC power of the ERS-K as a function of car speed, including alternative power curves for overtake. Sectors where exceptions apply are identified by lap distance windows, including areas where power reduction at the start of a Power Limited Pending period can exceed 150kW, where MGUK power reduction reset is permitted, and where the alternative power curve applies. Overtake detection and activation lines are specified (3974 m and 4121 m), along with a sector (T2-Exit T3) with a higher speed threshold (240 km/h) and a 1.0 s detection gap.

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FIA F1 Regulations - Article C5.2.10
C5.2.10 The energy harvested by the ERS-K Recharge, as measured at the CU-K HV DC Bus, must not exceed a limit of 8.5MJ in each lap, subject to the following additional conditions: i. This limit may be reduced to 8MJ at Competitions where the FIA determines that the maximum possible energy harvested per lap attributable under braking and in partial load is no more than 8MJ. ii. This limit may be further reduced to no less than 5MJ for Sprint Qualifying and Qualifying sessions at Competitions where the FIA determines that the harvesting strategies required to achieve the above limit are excessive, subject to the conditions specified in Article B7.2. iii. Up to 0.5MJ of additional energy may be harvested in each lap subject to the conditions specified in Article B7.2. The vehicle fundamentals used to determine the above limits will be provided in the document FIA- F1-DOC-034. 2026 Formula 1: Technical Regulations 27 February 2026 C6 5 C 0 SECTION C: TECHNICAL REGULATIONS C5.2.11 The MGU-K mechanical torque magnitude may not exceed 500Nm. The torque will be referenced
Open regulation PDF Pages 65–66 highlighted
FIA F1 Regulations - Article C12.8
12.8 Once the volumes in §12.4, §12.6 and §12.7 are fully defined, they must be combined to make one unified volume. 12.9 On a plane through Z = 75, a simple, closed polygon whose edges pass through the following [X, Y]
Open regulation PDF Pages 210 highlighted
FIA F1 Regulations - Article C5.2.8
C5.2.8 Additionally, and subject to Article B7.2.1, the electrical DC power of the ERS-K used to propel the car may not exceed: i. When Overtake is not active: P(kW) = 1800 – 5 * car speed (kph) when the car speed is below 340kph P(kW) = 6900 – 20 * car speed (kph) when the car speed is equal to or above 340kph and below 345kph P(kW) = 0 when the car speed is equal to or above 345kph ii. When Overtake is active In Override Mode up to: P(kW) = 7100 – 20 * car speed (kph) when the car speed is below 355kph P(kW) = 0 when the car speed is equal to or above 355kph. C5.2.9 The di_erence between the maximum and the minimum state of charge of the ES may not exceed
Open regulation PDF Pages 65 highlighted
FIA F1 Regulations - Article C12.4
12.4 Once the volumes in §12.1 and §12.3 are fully defined, they must be combined with ALL non- overlapping regions discarded. 12.5 On a plane through Y = 0, a simple, closed polygon whose edges pass through the following [X , Z]
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FIA F1 Regulations - Article C12.5
12.5 On a plane through Y = 0, a simple, closed polygon whose edges pass through the following [XC, Z] vertices sequentially: a. [−875, 75], [320, 75], [320, 680], [0, 680], [0, 770], [−350, 770], [−350, 645], [−875, 645], [−875, 75]. 12.6 Once the surface in §12.5 is fully defined, it must be extruded along Y to Y = 400.
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FIA F1 Regulations - Article C5.2.8.iii
C5.2.8 Additionally, and subject to Article B7.2.1, the electrical DC power of the ERS-K used to propel the car may not exceed: i. When Overtake is not active: P(kW) = 1800 – 5 * car speed (kph) when the car speed is below 340kph P(kW) = 6900 – 20 * car speed (kph) when the car speed is equal to or above 340kph and below 345kph P(kW) = 0 when the car speed is equal to or above 345kph ii. When Overtake is active In Override Mode up to: P(kW) = 7100 – 20 * car speed (kph) when the car speed is below 355kph P(kW) = 0 when the car speed is equal to or above 355kph. C5.2.9 The di_erence between the maximum and the minimum state of charge of the ES may not exceed
Open regulation PDF Pages 65 highlighted
FIA F1 Regulations - Article C12.7
12.7 An axis-aligned cuboid, which has one interior diagonal defined by the points: a. [X , 170, 680], [X = 75, 400, 970]. C C 12.8 Once the volumes in §12.4, §12.6 and §12.7 are fully defined, they must be combined to make one
Open regulation PDF Pages 210 highlighted
FIA F1 Regulations - Article C7.2
7.2 Once the surface in §7.1 is fully defined, it must be extruded along Z to Z = 450. 7.3 Once the volume in §7.2 is fully defined, it must be trimmed with a plane passing through the
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FIA F1 Regulations - Article C7.2.1.viii
7.2 Once the surface in §7.1 is fully defined, it must be extruded along Z to Z = 450. 7.3 Once the volume in §7.2 is fully defined, it must be trimmed with a plane passing through the
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FIA F1 Regulations - Article C7.2.1.ix
7.2 Once the surface in §7.1 is fully defined, it must be extruded along Z to Z = 450. 7.3 Once the volume in §7.2 is fully defined, it must be trimmed with a plane passing through the
Open regulation PDF Pages 208 highlighted
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