Document 32 - P3 and Qualifying Scrutineering Report

Date: 20 September 2025 Time: 20:43

This report, issued by the FIA Formula One Technical Delegate Jo Bauer to the Stewards, details the technical checks performed on cars during and after the Third Free Practice (P3) session and the Qualifying session of the 2025 Azerbaijan Grand Prix.

During the Third Free Practice Session:

All cars underwent comprehensive checks, including:

• Tyre Pressures: Starting pressures.
• Fuel System: Fuel pressure, instantaneous fuel mass flow, partial load fuel mass flow, and fuel temperature.
• Engine & Cooling: Logged pressure within the engine cooling system, high rev limit bands, and plenum temperature.
• Power Unit Components:
  • Exhaust fluid mass flow.
  • IVT temperatures.
  • ES state of charge on-track limits.
  • Lap energy release and recovery limits.
  • MGU-K power limits, maximum MGU-K speed, and maximum MGU-K torque.
  • MGU-H maximum speed.
  • MGU-K and ES power models.
• Control Systems: Torque coordinator demands, torque control, torque sensor software version and calibration, and SECU custom software versions.

Before the Qualifying Practice Session:

• Gear Ratios: All cars were confirmed to be using gear ratios declared to the FIA technical delegate for the 2025 Championship.

During the Qualifying Practice Session:

Specific checks were conducted on various cars:

• Weighing: Car numbers 81, 04, 16, 06, 27, and 05 were weighed.
• Weight Distribution: Checked on car numbers 81, 04, 16, 06, 27, and 05.
• Rear Wing Elements:
  • Uppermost rear wing element adjustable positions checked on car numbers 44, 14, 31, and 27.
  • Minimum distance between adjacent rear wing sections checked on car numbers 44, 14, 31, and 27.
• Tyre Pressures: Starting pressures of all cars during the qualifying sessions were checked.

After the Qualifying Practice Session:

Post-session checks included:

• Weighing: Car numbers 04, 01, 22, 63, 12, 06, 30, and 55 were weighed.
• Rear Wing Elements:
  • Uppermost rear wing element adjustable positions checked on car numbers 04, 01, 63, 12, and 30.
  • Minimum distance between adjacent rear wing sections checked on car numbers 04, 01, 63, 12, and 30.
  • A rear wing main plane tip deflection test was carried out on car number 31.
• General Checks (all cars):
  • Fuel pressure, logged engine cooling system pressure, engine high rev limit bands.
  • Fuel flow meter calibration checksums, instantaneous fuel mass flow, partial load fuel mass flow, fuel temperature, plenum temperature, exhaust fluid mass flow.
  • IVT code and calibration checksums, IVT temperatures.
  • ES state of charge on-track limits, lap energy release and recovery limits.
  • MGU-K power limits, maximum MGU-K speed, maximum MGU-K torque, maximum MGU-H speed, MGU-K power model, ES power model.
  • Torque coordinator demands, torque control.
  • Session type confirmation.
  • Chassis FIA checksum.
  • Torque sensor software version and calibration checks.
  • Rear brakes pressure control.
  • Steering wheel checks.
  • PCU dashboard display configuration (verified unchanged).
  • Custom software version checks, SECU software version checks.
• Tyre Checks:
  • Cold pressure checked on car numbers 22 and 55.
  • Tyres used by all drivers during the sessions today were checked.

SECU Software Versions Used by Teams During Qualifying:

Conclusion:

Apart from the rear wing main plane tip deflection test on car number 31 (as detailed in Document 26), all items checked were found to be in conformity with the 2025 FIA Formula One Technical Regulations.