Article 78
Lambda Sensor(s)
Technical Regulations
Article 78
Lambda Sensor(s)
Chapter: Appendix C4
In Simple Terms
F1 cars must have lambda sensors that measure the air-fuel ratio in the engine exhaust to ensure proper combustion and emissions control. These sensors help teams optimize engine performance while staying within environmental regulations.
- Lambda sensors monitor the oxygen content in exhaust gases to measure air-fuel ratio
- Required for emissions compliance and engine efficiency monitoring
- Teams must use FIA-approved sensors and cannot modify them
- Sensor failure or removal can result in technical violations and penalties
Official FIA Text
Lambda Sensor(s)
lambda sensorair-fuel ratioexhaustemissionsoxygen sensor
2026 Season Regulations