Mercedes has rolled out its first major 2026 upgrade package at the Canadian GP, facing competition from McLaren, which completed its two-part upgrade plan. Mercedes has won every race so far but has seen McLaren make inroads with its papaya squad's improvements introduced earlier in the season.

McLaren's second-stage upgrade centers around a brand-new front wing "aimed at better flow conditioning" and a re-profiled engine cover with optimized cooling exits. Mercedes focused on one cohesive package, featuring a new front wing with integrated mainplane and revised floor sections to improve downforce generation and airflow toward the diffuser.

Red Bull backed up its Miami upgrade with minor floor tweaks and revised front wing flaps for Montreal-specific balance, while Ferrari stands as the only frontrunner without new parts after its Miami update. The technical development battle intensifies as teams optimize for Canada's unique circuit challenges.