F1 McLaren: here are the upgrades that brought the MCL40 back to life
McLaren has updated the MCL40 across several key areas, also taking inspiration from Ferrari, and immediately made a significant step forward in performance. The Woking-based team has rediscovered competitiveness, with improvements in the way the Mercedes power unit is being exploited, particularly in energy management, which has helped revitalise the MCL40 package. This is also supported by a substantial aerodynamic upgrade package that has given the car a clearer direction of development. Lando Norris has quickly regained confidence with the papaya-coloured car, which now appears much more stable and planted at the rear.
Floor updates
In Miami, McLaren is beginning to see the results of many months of work in the wind tunnel. The team from Woking was the only top team that had not yet introduced updates since the launch of the MCL40, preferring instead to take the necessary time to fully understand the car, study rival solutions, and prepare a first meaningful development step.
The most important changes concern the floor, which even in the current generation of Formula 1 cars remains the most critical aerodynamic component. In detail, McLaren has redesigned the five flow conditioners in the floor inlet section, drawing inspiration from Ferrari geometry concepts. Between the floor fences, horizontal bridge-like structures have been introduced, similar to those seen on the Ferrari SF-26 from pre-season testing onwards.
Looking further outwards, McLaren has also redesigned the lateral bargeboard-style elements of the floor in order to keep tyre turbulence under control, continuing to favour vertical structures rather than horizontal elements, a design philosophy that prioritises cleaner airflow separation.
Moving towards the rear, there is a clear evolution in the area in front of the rear wheels, where the openings are now shorter and follow a noticeably different layout compared to the previous specification, also featuring the addition of a small vertical aerodynamic element. The goal is to inject more energy underneath the floor while also reducing the impact of harmful vortices generated by the tyres.
Finally, slightly further back, the outer diffuser fence now features a larger opening, similar to solutions seen on several rival cars. This design is intended to feed higher-energy airflow into the diffuser, increasing overall extraction efficiency, although it also exposes the rear more directly to tyre turbulence.
All-round upgrades
The floor modifications are combined with several other interventions across the car, starting with aerodynamic changes around both the front and rear wheel assemblies. The bodywork itself remains largely unchanged, apart from new mirror mounting supports, which are now less angular than the previous design.
On top of the engine cover, on both sides of the air intake, two small vortex generators have been added. These components help energise airflow towards the rear wing, which has also been updated. The aerodynamic department led by Peter Prodromou has revised the wing profiles, extending the chord of the final element, and redesigned the endplates, which now feature additional surface detailing designed to guide airflow upwards more effectively.
Overall, the upgrade package brought to Florida represents a significant step forward, clearly reflected in Lando Norris’s feedback regarding increased rear downforce and improved confidence. However, this may not be the end of the development story.
“Between Miami and Canada we will see a completely new MCL40,” Andrea Stella said around ten days ago. Further upgrades could therefore arrive in Montreal, potentially intensifying the battle with Mercedes, which is also preparing its own upgrade package in the coming races.
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