Rules & penalties · Updated for 2026
The F1 fuel-flow limit explained
How regulated fuel delivery constrains combustion power and is monitored by approved sensors.
Quick answer
Formula 1 limits fuel flow under defined operating conditions and monitors delivery with regulated sensing and data. Teams optimise combustion without exceeding the current technical limits.
Why flow matters
Limiting how rapidly chemical energy enters the engine prevents power being raised simply by burning more fuel and keeps efficiency central to development.
Measurement
Approved sensors and logged data allow FIA technical staff to compare the car's fuel delivery against the permitted conditions.
Optimisation
Engine designers pursue combustion efficiency, air handling and control precision so more useful work comes from the allowed fuel rather than seeking more flow.