The FIA has updated rear LED lights on Formula 1 cars to better signal the operating status of the MGU-K electric motor. The changes address driver feedback on visibility and aim to enhance safety ahead of the 2026 regulations.
The governing body tested a revised signalling system during free practice at the Canadian Grand Prix. Three colours now replace previous flashing patterns, with blue indicating partial MGU-K energy supply, purple showing use of the internal combustion engine only, and yellow denoting super-clipping mode where the motor harvests energy.
