Article 3.5
Minimal incidental changes
Technical Regulations
Article 3.5
Minimal incidental changes
Chapter: Appendix C5
In Simple Terms
Teams can make small adjustments to certain car systems without needing special permission from race officials. These minor tweaks are allowed for things like wiring, exhaust pipes, turbo positioning, and fluid hoses, as long as they don't significantly change how the car works.
- Only 'minimal incidental' changes are allowed - not major modifications
- Permitted systems include wirings, exhaust, turbo-compressor, wastegates, intake air system, and hydraulic hoses
- Changes must be for 'car installation' purposes only
- Any modification beyond these minimal adjustments requires official approval
Official FIA Text
Minimal incidental changes may be carried out for car installation to wirings, exhaust system, turbo-compressor position, wastegates, engine intake air system, and hydraulic hoses.
minimal incidental changescar installationexhaust systemturbo-compressorwastegates
2026 Season Regulations