Mercedes and Ferrari have a curious hole in the diffuser area of their 2026 Formula 1 cars, and teams and experts are trying to understand how it works. The hole isn’t just a random design — it likely affects how air flows under the car, helping with downforce and balance.
Diffusers help extract air from beneath the car to create grip, and this new hole could be a clever way to improve airflow and make the car faster or more stable. Teams test and optimize these details to get an edge, and F1 fans are watching closely to see how this design idea plays out in performance on track.
In simple terms: Mercedes and Ferrari are using a new airflow trick in their diffusers that is important for performance, and engineers are studying exactly why and how it helps.