Racing Bulls and Haas arrive with the most extensive upgrade packages, while Ferrari and Aston Martin bring no new components to one of Formula 1’s fastest circuits
Development never stops in Formula 1, but not every upgrade is designed to unlock outright performance. At Spa-Francorchamps, where long straights are balanced by some of the fastest corners on the calendar, teams have largely focused on improving aerodynamic efficiency and reducing drag rather than introducing major new concepts.
Racing Bulls and Haas lead the way with four updates each, Mercedes and Williams have introduced three changes, while McLaren and Audi bring two apiece. Red Bull, Alpine and Cadillac each arrive with a single update, while Ferrari and Aston Martin have chosen not to introduce any new components for the Belgian Grand Prix.
Racing Bulls (4 updates)
No team has brought more new parts to Spa than Racing Bulls.
The Faenza-based outfit has revised its sidepods and engine cover, narrowed the roll hoop inlet, updated the front brake drum assembly and introduced a new rear wing. Together, the package is designed to improve airflow through the car while increasing rear wing efficiency, with several of the developments expected to benefit the team beyond the Belgian Grand Prix.
Haas (4 updates)
Haas has also arrived with an extensive aerodynamic package.
The American team has updated the front wing profiles, front wing endplates, front corner deflectors and introduced a revised beam wing. The changes are intended to improve front-end aerodynamic load while maintaining efficiency, with the lower rear wing tailored specifically to Spa’s demands.
Mercedes (3 updates)
Mercedes continues its steady development programme with changes to three areas of the W17.
A revised rear wing has been introduced to reduce drag for Spa’s long straights, while updates to the rear corner winglets and front wing endplates are aimed at improving airflow through the car and delivering more consistent aerodynamic performance across a wider operating window.
Williams (3 updates)
Williams has split its updates between circuit-specific changes and longer-term development.
The team has revised the rear brake duct winglets and floor to better suit Spa’s low-drag requirements, while also introducing a new diffuser profile designed to improve airflow distribution through the rear of the car.
McLaren (2 updates)
McLaren’s attention is focused entirely on the rear wing.
The championship contender has introduced a revised endplate to improve airflow, alongside a dedicated low-drag rear wing assembly designed specifically for the high-speed characteristics of Spa-Francorchamps.
Audi (2 updates)
Audi continues to evolve its aerodynamic package with two changes.
The team has introduced a circuit-specific rear wing for Belgium together with a refined diffuser winglet, both aimed at improving airflow and aerodynamic efficiency.
Red Bull (1 update)
Red Bull has opted for a more targeted approach.
Its sole update focuses on the rear wing, with revised pylon profiles designed to extract additional aerodynamic load while maintaining airflow stability under the current regulations.
Alpine (1 update)
Alpine has introduced a redesigned halo fairing featuring an additional winglet.
The change is intended to improve airflow management downstream of the cockpit and increase aerodynamic load towards the rear of the car.
Cadillac (1 update)
Cadillac’s only update comes at the front of the car.
The team has revised the front wing endplates, footplate surfaces and turning vanes to improve airflow towards the floor, increasing aerodynamic load across a broader operating range.
No upgrades for Ferrari or Aston Martin
Unlike many of their rivals, Ferrari and Aston Martin have elected not to introduce any new components for the Belgian Grand Prix.
While that may appear significant on paper, it does not necessarily indicate a lack of development. Teams often skip circuit-specific upgrades when they are satisfied with their existing package or when they are preparing a larger development for a future race. At Spa, both squads will instead rely on setup optimisation to extract performance from their current cars.
