Formula 1 technical rulings, scrutineering and power unit paperwork, newest first.
Autosport
Mercedes discussed its W17 upgrade difficulties, which made the car harder to drive, during the Singapore Grand Prix weekend. The team plans further updates for the US Grand Prix, with concerns about its 2027 competitiveness.
Motorsport.com
The FIA will ban a Red Bull aerodynamic configuration, copied by Audi, for 2027. The rule limits floor support to 5mm, forcing a redesign. The clampdown follows Red Bull's clever use of the loophole.
Doc 52 - Sprint Scrutineering
Technical Delegate's pre- and post-Sprint scrutineering report for the 2026 Singapore Grand Prix confirms all checks were completed and all cars found to be in compliance with the 2026 FIA Formula One Technical Regulations.
Doc 89 - Race Scrutineering
The FIA Technical Delegate's report details pre- and post-race checks, all found to be in compliance with the 2026 F1 Technical Regulations.
Crash.net F1
Honda denied Fernando Alonso's claim that his turbo was broken during the Singapore Grand Prix, though they replaced the component to satisfy him. The disagreement emerged in post-race coverage, with Honda insisting no failure occurred.
Doc 78 - Parc Ferme Issues
Technical Delegate refers multiple parc fermé and power unit component breaches to the stewards for cars 06, 14 and 18.
Doc 68 - Qualifying Scrutineering
Technical delegate's report confirming all checked cars and components were in compliance with the 2026 FIA Formula One Technical Regulations during qualifying.
Doc 57 - New PU Elements for this Competition
George Russell uses a fourth energy store and control electronics unit, exceeding the 2026 season allowance, as reported by the Technical Delegate.
Motorsport.com
Mercedes evaluated Kimi Antonelli's upgraded W17 at Singapore Grand Prix qualifying, with the team offering fresh judgement on the new floor and sidepods. The upgrade's performance remains uncertain despite Antonelli's belief it works better.
Motorsport.com
Mercedes' new aerodynamic upgrade failed during Singapore Grand Prix Sprint qualifying, leaving drivers George Russell and Kimi Antonelli struggling. The team's split-specification test added confusion, with bosses admitting they are baffled by the lack of performance.
Doc 28 - P1 and Sprint Qualifying Scrutineering
The FIA Technical Delegate's report confirms all scrutineering checks during P1 and Sprint Qualifying at the 2026 Singapore Grand Prix were found to be in compliance with the 2026 FIA Formula One Technical Regulations.
Doc 19 - New PU Elements for this Competition
Technical Delegate's report noting George Russell's new ICE, TC, EXH, and MGU-K exceed allowed season limits, and Lando Norris and Franco Colapinto's new PU-ANC are within limits.
DOC 15 - 2026 Singapore Grand Prix - New PU Elements for this Competition
Technical Delegate's report noting George Russell's use of a fifth ICE, TC, and EXH, and a fourth MGU-K, ES, and PU-CE, exceeding the 2026 season limits.
Doc 11 - Self Scrutineering
The FIA Technical Delegate confirmed that all teams submitted their scrutineering declaration forms by the deadline.
Doc 10 - PU Elements used per Driver up to now
Technical Delegate's report listing the power unit elements used per driver up to the 2026 Singapore Grand Prix.
Crash.net F1
Mercedes tested a split car experiment during Friday practice at the Singapore Grand Prix, with drivers using different setups. The team has now shared early learnings from the unique approach, which was introduced alongside upgrades at the Bahrain Grand Prix.
Doc 3 - Power Unit Information
Document 3 provides power unit information for the Singapore Grand Prix, including energy limits, power reduction rates, and overtake settings.
Motorsport.com
McLaren made peripheral power unit changes to fix Lando Norris's persistent fuel system problem ahead of the Singapore Grand Prix. Norris took blame for missing front row in qualifying, while hoping the fixes cure his top speed deficit.
Sky Sports F1
George Russell will race Mercedes' older-specification car at the Singapore Grand Prix while Kimi Antonelli runs the upgraded package, as the team investigates why updates introduced in Malaysia underperformed. The decision was described as a 'no-brainer'.
F1i
F1 drivers remain divided over cooling vests ahead of the 2026 season's fourth heat hazard race. Isack Hadjar has called for a ban, while others defend the equipment. The debate follows research since the 2023 Qatar Grand Prix.
Racer
The FIA completed its review of the software glitch that delayed the rain-hit Bahrain Grand Prix in Malaysia, revealing the cause and introducing measures from the United States Grand Prix to prevent a repeat.
PlanetF1
A software failure during the Malaysian Grand Prix caused multiple F1 cars to lose power. Esteban Ocon explained he needed a Windows restart after an FIA remote management problem, while Nikolas Tombazis detailed the cause.
Doc 56 - Race Scrutineering
The FIA Technical Delegate's post-race scrutineering report confirms all cars were found to be in compliance with the 2026 FIA Formula One Technical Regulations.
Doc 37 - P3 and Qualifying Scrutineering
The FIA Technical Delegate's report confirms all cars were checked and found compliant with the 2026 FIA Formula One Technical Regulations during P3 and Qualifying.
PlanetF1
The FIA revealed why F1 cars stopped during a rain-delayed Bahrain Grand Prix start in Malaysia, citing a throttle input glitch affecting front-row starters Max Verstappen and Lewis Hamilton, leading to an aborted start.
Doc 30 - New PU Elements for this Competition
Technical Delegate's report confirming Liam Lawson's use of new ICE, TC, exhaust, and PU-ANC elements, all within allowed season limits.
Doc 25 - P1 and P2 Scrutineering
Technical Delegate's report confirming all scrutineering checks before, during, and after P1 and P2 were in compliance with the 2026 F1 Technical Regulations.
Doc 14 - New PU Elements for this Competition
Technical Delegate's report on new PU elements used by four drivers for the Bahrain Grand Prix, noting non-compliance for Hadjar, Lindblad, and Colapinto.
Autosport
Mercedes introduced a significant upgrade package for the W17 at the Bahrain Grand Prix in Malaysia, featuring a reworked floor and new sidepods. The team aims to strengthen its control in both 2026 championships amid competition from Ferrari, McLaren, and Red Bull.
Doc 10 - Self Scrutineering
All teams submitted their scrutineering declaration forms before the deadline.
