McLaren and Red Bull bring major upgrades to Baku for the 2026 Azerbaijan Grand Prix on September 26.

Mercedes and Ferrari remain unchanged, sharpening a development battle at the Baku City Circuit.

McLaren submits eight updates across sidepod, engine cover, floor, diffuser, rear suspension, and rear wing, targeting airflow efficiency and straight-line drag tailored to the street layout.

A redesigned sidepod inlet and engine cover drive cleaner flow rearwards. An alternative sidepod geometry provides flexibility for conditions across practice, supporting cooling choices and aerodynamic balance.

Floor edges and diffuser are reworked to widen the load window. Revised rear suspension fairings aim to harness new flow structures without compromising stability over bumps and kerbs.

A race-specific rear wing flap position trims drag on Baku’s extended straight. The team weighs that gain against sensitivity through the castle section and downhill braking zones.

Red Bull counters with five changes centred on revised floor and diffuser contours. The target is higher local downforce while preserving a robust, predictable underfloor flow field.

A reprofiled sidepod-to-floor junction improves sealing and consistency. Updated cooling louvres suit the reshaped bodywork, while mirror and halo refinements reduce wake losses and support extra load.

Both teams chase qualifying rotation and race stability on the street surface. Correlation and setup bandwidth decide whether gains carry through traffic, tyre warm-up, and safety car interruptions.

Mercedes and Ferrari choose continuity, focusing on understanding and future events. The risk is ceding ground in sectors demanding efficient downforce, braking stability, and traction over long stints.

Audi introduces the deepest midfield package. Changes span nose and front wing, front suspension covers, floor, halo, engine cover, rear suspension, brake ducts, beam wing, rear wing, and endplates.

Williams adds a new floor and tail revisions, plus front-corner bodywork, rear suspension cladding, and rear brake duct parts. Racing Bulls refines front wing, brake ducts, and suspension profiles.

Cadillac tweaks brake cooling geometry and diffuser winglets. Aston Martin, Haas, and Alpine bring no updates, prioritising reliability and setup refinement for the weekend’s evolving conditions.

Track characteristics reward efficient aero and braking confidence. Expect volatile qualifying, with slipstream effects on the main straight and traffic complicating tyre preparation across short runs.

McLaren’s drivers, including Lando Norris, must validate gains through practice runs. Work undertaken on Thursday will inform risk appetite on ride heights and wing level.

Away from the garages, paddock narratives track setup trends and reliability flags. See our Baku paddock stories for context as the weekend develops.

Visual Summary

Daniel Miller

Daniel Miller reports on Formula 1 Grand Prix weekends with race-day analysis, team-radio highlights, and point-standings updates. He explains power-unit upgrades, aerodynamic developments, and driver rivalries in straightforward, SEO-friendly language for a global F1 audience.