Article 78

Lambda Sensor(s)

Technical Regulations

Article 78

FIA Source

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