McLaren targets MCL40 handling with its final 2026 upgrades

McLaren has started rolling out its final 2026 upgrade package in Austin, with revised front-end suspension geometry at the heart of an effort to make the MCL40 easier to exploit. A reprofiled diffuser is among the first changes.

By mid-season, the MCL40 had become one of the fastest cars through quick corners, but its slow-corner performance and straight-line speed remained problems, alongside a nervous feel. In Singapore, Lando Norris said the car was on a “knife edge” through every turn, demanding so much concentration that it was difficult to string together qualifying laps. Ahead of the US GP, he said McLaren's two wins and his further podiums had come by tiny margins. After practice in Austin, he summed up the gap: “We're just a step behind.”

Norris's driving style helps explain the emphasis on the front end. He takes a shallower line to the apex than many drivers, overlaps throttle and brake more, and relies on sensing lateral grip at the front tyres to rotate the car. High anti-squat and anti-dive suspension geometry can steady the aerodynamic platform but dull feedback about grip changing at each axle. That trade-off helps explain why McLaren changed the front geometry alongside aerodynamic components: the task is to make pace usable, not merely to add theoretical performance. There is a precedent: after a slow start in 2025, Norris's performances improved when McLaren developed an alternative front-suspension geometry for him.

The Austin update builds on a development path that began in Baku. At the 2026 Azerbaijan Grand Prix, McLaren introduced a different sidepod profile and revised flow-shaping components around the diffuser, the floor's leading edge and the rear-suspension fairings. The team did not expect that package to deliver a major immediate lap-time gain. After Singapore, team principal Andrea Stella described the Baku work as foundational for later updates and said he hoped the complete package would return McLaren to podium contention and eventually put it in a position to fight for wins.

Not every weakness has the same cause: McLaren acknowledged that at least some of its straight-line-speed deficit came from not extracting the most from its Mercedes power unit. The next upgrade phase is expected in Brazil, with any additional Las Vegas parts dependent on manufacturing timescales. The components were signed off between the 2026 Dutch and Italian Grands Prix and have been moving through production, while McLaren's design resources are focused on the 2027 car.