Mercedes debuted a unique diffuser at the Canadian Grand Prix, part of a "truly significant" upgrade package for the W17. The new design incorporates serrated profiles along its upper section, an uncommon approach to extending the diffuser compared to rivals who typically attach extensions directly to the rear crash structure. This serration, somewhat akin to elements seen on driver cockpit screens, covers over half the diffuser's width, aiming to maximize its aerodynamic effect.

Further innovation lies in a small, outward-facing flow deflector positioned on the waterfall profiles beside the diffuser. This element is designed to precisely manage airflow exiting the floor and clean up the wake, mitigating harmful aerodynamic effects from tyre rotation. These novel solutions highlight Mercedes' aggressive push to claw back performance, and their impact will be closely watched in the upcoming races as the team seeks consistent podium finishes.

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