F1TECH: McLaren’s Miami aerodynamic epgrade package explained

McLaren arrived in Miami with one of the most comprehensive development packages seen so far in the 2026 season — a multi‑component aerodynamic overhaul aimed at unlocking the next phase of performance from the MCL40.

The team had signalled for weeks that Miami would mark the introduction of a “first phase” upgrade, and Friday’s running confirmed that the new package delivered immediate, measurable gains.

Technical Director – Applied Engineering Neil Houldey described the opening day as a validation of the team’s development direction, emphasising both the quality of the upgrades and the execution behind them. “We’re pleased with today’s result and performance across the opening day of running in Miami,” he said. “The car has been great for both drivers, and the first phase of our development upgrades has shown promising signs.”

The package is built around seven major components, each designed to improve flow conditioning, aerodynamic load, or cooling efficiency. Crucially, these changes were conceived as a unified aerodynamic concept — not isolated parts — and their combined effect has reshaped the car’s behaviour.

McLaren introduced revised front‑corner furniture with the explicit goal of improving flow conditioning. According to the team, “The Front Corner Furniture has been revised to improve interaction with the Front Wing resulting in better flow conditioning overall.”

This change enhances the quality of airflow entering the underfloor and sidepod region, sharpening the car’s front‑end response and improving consistency in medium‑speed corners — an area where the MCL40 had previously lacked precision.

The central bodywork received modified furniture designed to manage airflow more effectively around the engine cover. McLaren explained: “Furniture around the Central Bodywork has been added resulting both in an improvement in flow conditioning as well as local gain, increasing overall aerodynamic efficiency.”

This addition helps stabilise the wake behind the cockpit and improves the interaction between the upper bodywork and the floor, contributing to a more predictable aerodynamic platform.

The sidepod inlet and mirror assembly were redesigned to complement the new floor. The team stated: “The Sidepod Inlet along with the Mirror has been revised for an improvement in flow conditioning in interaction with the new floor geometry.”

This is a critical part of the package: the new inlet shape feeds cleaner, more energised airflow into the floor’s leading edge, improving load generation and reducing sensitivity to yaw.

Given Miami’s high ambient temperatures, McLaren added a sidepod louvre option to expand the cooling window. “To cope with the high cooling demands of this event, a sidepod louvre option is available, increasing overall cooling capacity if required.”

This ensures the team can run the new aerodynamic surfaces without compromising thermal management — a key factor on a Sprint weekend with limited setup time.

The centrepiece of the Miami package is a completely new floor and floor‑edge board geometry. McLaren described it as: “A completely new floor and Board geometry, working in conjunction with the aforementioned geometrical changes, resulting in an increase in aerodynamic load and efficiency across all conditions.”

This is the single largest contributor to the performance step. The new floor improves downforce generation, reduces flow separation, and enhances stability under braking and acceleration. It also integrates with the revised front‑corner and sidepod inlet designs, forming a cohesive aerodynamic ecosystem.

Rear Corner: Revised Furniture for Wake Management
To complement the new floor, McLaren introduced revised rear‑corner furniture. The team explained: “The Rear Corner furniture has been revised for improved interaction with the new floor geometry, resulting in better flow conditioning.”

This helps manage the turbulent wake around the rear wheels, improving diffuser performance and reducing drag.

Finally, McLaren debuted a new rear wing featuring redesigned elements and a revised endplate. According to the team: “A new Rear Wing geometry featuring new elements as well as a revised Endplate geometry, resulting in an overall gain in aerodynamic load and efficiency.”

This improves rear stability and complements the increased load generated by the new floor, giving the drivers a more balanced car across the speed range.