FIA Formula 1 World Championship - 2026 Monaco Grand Prix

From: The FIA Formula 1 Technical Delegate
To: The Stewards
Document: 62
Date: 06 June 2026
Time: 19:29

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Technical Delegate's Report

1. During the Third Free Practice Session (FP3)

The following routine checks were carried out on all cars:

• Tyres: Tyre starting pressures were verified.
• Engine & Cooling: Engine high rev limit bands, logged pressure within the engine cooling system, and SECU custom software versions were checked.
• Fuel System: Fuel pressure (from FP2), fuel flow meter calibration checksum, instantaneous and partial load fuel energy flow, and fuel temperature were checked.
• Power Unit (PU) & ERS: Plenum temperature, engine intake air pressure, maximum turbocharger speed, PU/MGU-K power reduction rates, DC sensor code/calibration checksums, on-track ES state of charge limits, ERS recharge limits, and maximum MGU-K power/speed limits were checked.
• Torque: Torque coordinator demands and torque control were verified.

After FP3:

• An engine oil sample was taken from Car 5.

2. Before the Qualifying Session

• Fuel Samples: Taken from Cars 14, 43, and 55.
• Engine Oil Samples: Taken from Cars 14 and 43.
• Gear Ratios: Confirmed for all cars to be in conformity with the declared gear ratios for the 2026 Championship.

3. During the Qualifying Session

• Weighing & Weight Distribution: Checked on Cars 03, 06, 44, 23, 55, 14, 87, 27, 43, 11, and 77.
• Aerodynamic & Bodywork Checks: A comprehensive check (covering Floor, Nose, Chassis, Wings, Sidepods, etc. under TR Article C3) was conducted on Car 14.
• Tyres: Tyre starting pressures were checked on all cars.

4. After the Qualifying Session

• Weighing: Checked on Cars 81, 01, 63, 12, 03, 06, 16, 44, 30, and 10.
• Aerodynamic & Bodywork Checks: Comprehensive checks conducted on Cars 01 and 30.
• System Checks: Fuel pressure, engine cooling, fuel flow, MGU-K limits, torque control, steering wheel, and rear brakes pressure control were checked on all cars.
• Cold Tyre Pressures: Checked on Cars 3 and 30.
• Fuel & Oil Analysis:
  • Fuel samples taken from Cars 12 and 44 were analyzed via gas chromatography; results conformed to approved reference fuels.
  • An engine oil sample from Car 14 was analyzed via FTIR spectroscopy and viscometry, conforming to approved reference samples.

5. FIA Standard ECU System Versions

During the qualifying sessions, all teams used the standard ECU software version SR1833:

Conclusion: All the checked items were found to be in conformity with the 2026 FIA Formula One Technical Regulations.

Manuel Leal
The FIA Formula 1 Technical Delegate