Article C8.1.8
Software version limit
Technical Regulations
Article C8.1.8
Software version limit
Chapter: C8
In Simple Terms
Teams can only use a limited number of different software versions throughout a season. Once a car leaves the pit lane with a particular software version, it counts as 'used.' The limit decreases over time: 5 versions allowed in 2026, dropping to 4 versions in 2027-2028, and finally 3 versions in 2029-2030.
- Software version limits decrease progressively: 5 (2026) → 4 (2027-2028) → 3 (2029-2030)
- A version is officially 'used' once the car's timing transponder registers it leaving the pit lane
- Teams must carefully plan their software upgrades within these strict annual limits
- This rule applies to ECU F1 Team applications
Official FIA Text
The number of versions used in any single championship season will be limited. ECU F1 Team applications: 5 (2026), 4 (2027-2028), 3 (2029-2030). A version is deemed used once the car's timing transponder shows it has left the pit lane.
software versionsecu applicationsversion limitpit lanetiming transponder
2026 Season Regulations