Formula 1 technical rulings, scrutineering and power unit paperwork, newest first.
Doc 81 - Race Scrutineering
The FIA Technical Delegate's report confirms all scrutineering checks before and after the 2026 Mexico City Grand Prix found no non-compliance with the 2026 FIA Formula One Technical Regulations.
Doc 56 - P3 and Qualifying Scrutineering
Post-session scrutineering report for P3 and qualifying at the 2026 Mexico City Grand Prix; all checks found in compliance.
Doc 40 - Self Scrutineering after Survival Cell Change
The FIA Technical Delegate confirms receipt of the scrutineering declaration form for car 18 following a survival cell change.
Doc 31 - FP1 and FP2 Scrutineering
Technical delegate's report confirms all car checks during FP1 and FP2 were in compliance with the 2026 F1 Technical Regulations.
Motorsport.com
Lewis Hamilton loses power in Ferrari during Mexico City Grand Prix FP2, stopping at Turn 3. He prays the engine is okay as Ferrari investigates.
Doc 13 - New PU Elements for this Competition
Technical Delegate reports Bottas using fifth ICE and TC, fourth MGU-K, ES, and PU-CE, exceeding 2026 limits.
Doc 10 - Self Scrutineering
All teams submitted their self-scrutineering declaration forms before the deadline, and cockpit exit and knee clearance checks were successfully completed.
Doc 9 - PU Elements used per Driver up to now
Technical Delegate's report listing power unit elements used per driver up to the 2026 Mexico City Grand Prix.
Autosport
Ahead of the Mexican Grand Prix, teams adapted cooling and aero for the 2,286-metre altitude. The Race and Autosport analysed the unique technical demands, with new regulations adding further unknowns.
r/F1Technical
A new Python library, tif1, was released for F1 data, offering a fastf1-compatible API with more data, no rate limits, and faster performance. The release was announced on Reddit.
Motorsport.com
Oliver Bearman said Haas' 2026 F1 car is hitting its ceiling after the United States Grand Prix, where he qualified 16th despite strong Friday pace. His future with Haas for 2027 remains uncertain, as he admitted the decision is not in his hands.
Motorsport.com
Red Bull team principal Laurent Mekies admitted the team's race-start issues, highlighted by Isack Hadjar's poor launch at the United States Grand Prix, will not be fully resolved until the 2027 season. Progress has been made in 2026, but major changes are needed.
Doc 56 - Race Scrutineering
The FIA Technical Delegate's report details pre- and post-race checks, confirming all cars were in compliance with the 2026 Technical Regulations.
PlanetF1
Mercedes' latest upgrades showed first positive signs, with Toto Wolff crediting Andrea Kimi Antonelli for pushing the W17's limits. The team still faces a puzzle to unlock full performance, as discussed in recent coverage.
Doc 28 - New PU Elements for this Competition
The FIA Technical Delegate reports that Gabriel Bortoleto has used new power unit elements beyond his seasonal allowance, while other drivers' new parts are within compliance.
Motorsport.com
Isack Hadjar demanded Red Bull redesign its clutch after a poor start from third dropped him to fifth at Sunday's United States Grand Prix. The Frenchman called the issue "fragile" and was frustrated by the costly getaway.
Doc 42 - P3 and Qualifying Scrutineering
Technical Delegate's report detailing checks on cars during P3 and qualifying, all found in compliance with 2026 F1 Technical Regulations.
Autosport
Aston Martin struggled at the Singapore Grand Prix, with Fernando Alonso citing Honda power unit problems after a disappointing Marina Bay weekend. Adrian Newey said Honda's resolve strengthened despite struggles, while reports detailed unexpected issues with the upgraded engine.
Doc 25 - P1 and P2 Scrutineering
Technical Delegate's report confirming all scrutineering checks during P1 and P2 were in compliance with the 2026 FIA Formula One Technical Regulations.
Autosport
McLaren debuted its final 2026 upgrade package at the United States Grand Prix, with Lando Norris admitting the team is "a step behind" after a troubled season. Initial verdicts from McLaren and media analysis highlight the challenge of extracting performance.
Doc 13 - New PU Elements for this Competition
Technical Delegate's report listing drivers with new power unit elements for the 2026 United States Grand Prix, noting compliance and non-compliance with regulations.
Doc 10 - Self Scrutineering
All teams submitted their scrutineering declaration forms before the deadline.
Doc 9 - PU Elements used per Driver up to now
Technical Delegate's report listing the power unit elements used per driver up to the 2026 United States Grand Prix.
Autosport
Ferrari brought minor upgrades and a blueprint-inspired livery to the United States Grand Prix. Drivers downplayed the new parts' significance, with updates focused on floor fingers and sidepods, adding less than a tenth of performance.
Autosport
McLaren and Mercedes evaluated their final 2026 upgrades during United States Grand Prix practice in Austin. McLaren's Lando Norris admitted the car is "a step behind," while Mercedes reported a "step forward" with its package. Both teams aim to resolve performance issues.
r/formula1
Isaac Hadjar's car lacked power below 40% throttle due to wrong pit stop mapping, costing him pace and delaying Max Verstappen on fresh tires during the United States Grand Prix. Verstappen finished on the podium.
Doc 3 - Post-Race Checks on Car Number 27, 2026 Singapore GP
Post-race checks on car number 27 found all clutch components in compliance with the 2026 Technical Regulations.
The Race
Mercedes has rolled back the debut of its upgraded Formula 1 engine, initially expected at the United States Grand Prix. The delay was confirmed in recent coverage, with no new race result involved.
Motorsport.com
Ferrari drivers Lewis Hamilton and Charles Leclerc gave a disappointing verdict on the team's much-hyped upgrade for the United States Grand Prix, while Ferrari also unveiled a special blueprint-inspired livery for the Austin weekend.
Motorsport.com
Former F1 fuel flow meter supplier Sentronics Holdings sued replacement Allengra GmbH in Texas on 16 October, claiming patent infringement, days before the Austin Grand Prix. The lawsuit escalates the fuel flow monitoring dispute into court.
