Article C5.23
Single ICE Mode
Technical Regulations
Article C5.23
Single ICE Mode
Chapter: C5
In Simple Terms
Drivers must use the same engine power mode throughout each lap during qualifying and races. They can only switch between different power modes during free practice sessions, where they're allowed to experiment and test different settings.
- One ICE mode must be maintained per competitive lap in qualifying and races
- Free practice is the only session where drivers can change power modes during laps
- This rule applies to all competitive sessions except free practice
- Ensures consistency and prevents mid-lap power adjustments during official racing
Official FIA Text
The Power Unit must be operated in a single ICE mode during each competitive lap in all sessions of a Competition, with the exception of free practice sessions.
ice modepower unitengine modecompetitive lapqualifying
2026 Season Regulations