What happened: Honda Racing Corporation announced it is replacing Tetsushi Kakuda as leader of its Formula 1 power unit development programme. His current assistant, Yoichiro Fukao, takes over effective October 1. Honda described the change as part of a planned organisational shuffle.

Why it matters: Honda supplies engines to Aston Martin, which has struggled for competitive pace this season. A change atop the engine programme signals Honda wants a different direction as it works to close the gap to rival manufacturers.

What to watch: Watch for Fukao's first public comments once he formally takes charge on October 1, and whether Honda outlines specific technical priorities for the change.