Overview
- Mercedes will debut its first major W17 upgrade in Montreal, as McLaren and others add parts after narrowing the gap in Miami.
- Honda says its Miami tests confirmed fixes for battery vibration and reliability, and it will target smoother driveability and smarter energy use on Montreal’s long straights in the Sprint weekend’s lone practice hour.
- F1 has locked in a 2027 rebalance toward a 60:40 split between combustion and electric power, reversing the 2026 formula that led to battery drain and mid‑lap power drop‑offs.
- A June 1 rule tweak will measure engine compression ratio at operating temperature rather than only at ambient, a change reports say could force power‑unit layout revisions that may reshuffle performance.
- Looking further out, Ford says it is open to a V8 on sustainable fuel with a smaller hybrid element, echoing FIA and F1 leaders who have floated a potential V8 return around 2031.