2026 Singapore Grand Prix - Document 89

From: The FIA Formula 1 Technical Delegate
To: The Stewards
Date: 11 October 2026
Time: 23:32

Technical Delegate's Report

Before the Race

• Part Replacements (after 18:50):
  • Audi (Car 27): Telemetry antenna
• Component Tests:
  • Rear wing bodywork and flap flexibility tests carried out on Car 55.
  • Front wing flap adjustable range digitally checked on Car 31.
  • Clutch paddle linearity checks carried out on Cars 05 and 10.
• Grid Checks:
  • Verified that all cars fitted tyres and disconnected tyre heating blankets upon the "5-Minutes" signal.
  • Front and rear tyre temperatures (LHS/RHS) checked on Cars 81, 12, 03, 23, 55, 41, 87, 10, and 43.
  • Minimum tyre starting pressure checked on all cars.

After the Race

• Weighed Cars: All participating cars (listed below) were weighed and checked:

  No.	Car / Team	Driver
  81	McLaren Mercedes	Oscar Piastri
  01	McLaren Mercedes	Lando Norris
  63	Mercedes	George Russell
  12	Mercedes	Kimi Antonelli
  03	Red Bull Racing RB Ford	Max Verstappen
  06	Red Bull Racing RB Ford	Isack Hadjar
  16	Ferrari	Charles Leclerc
  44	Ferrari	Lewis Hamilton
  23	Atlassian Williams Mercedes	Alexander Albon
  55	Atlassian Williams Mercedes	Carlos Sainz
  41	Racing Bulls RB Ford	Arvid Lindblad
  30	Racing Bulls RB Ford	Liam Lawson
  14	Aston Martin Aramco Honda	Fernando Alonso
  31	Haas Ferrari	Esteban Ocon
  87	Haas Ferrari	Oliver Bearman
  27	Audi	Nico Hülkenberg
  10	Alpine Mercedes	Pierre Gasly
  11	Cadillac Ferrari	Sergio Perez
  77	Cadillac Ferrari	Valtteri Bottas

• Aerodynamic & Bodywork Checks (Cars 63, 03, 10):

  • Floor Body, Foot, Sidewall, Board, Bib, Leading Edge Device, Winglet, Fence, Corner (Articles C3.5.1 - C3.5.10)
  • Plank Assembly (Article C3.6.1)
  • Mid Chassis (Article C3.7.3)
  • Mirror (Article C3.7.5)
  • Sidepod (Article C3.8.1)

• General Technical & Power Unit Checks:

  • Skid wear checked on all classified cars.
  • Fuel pressure, engine cooling pressure, high rev limits, fuel flow meter calibration, fuel energy flows (instantaneous and partial load), fuel and plenum temperatures, engine intake air pressure, and maximum turbocharger speed checked.
  • PU and MGU-K power reduction rates, DC sensor temperatures, ES state of charge, ERS recharge limits, maximum MGU-K power limits/speed, MGU-K use at race start, power models (MGU-K and ES), torque coordinator demands, and torque control checked on all cars.
  • Chassis FIA checksums, steering wheel, single/rear brake pressure controls, race start data, and formation grid speed limit (max 80 km/h) verified.
  • Front and rear wing adjuster transition times, tyre starting pressures, cold pressures (Car 27), and tyres used by all drivers were checked.

Conclusion: All car weights and items checked were found to be in compliance with the 2026 FIA Formula One Technical Regulations.