Bugatti Mistral vs BMW M6 Aerodynamics

This video compares the airflow behavior of two very different cars using CFD: a closed-roof BMW M6 F06 and the open-top Bugatti Mistral. Rather than ranking performance or chasing a “winner,” the focus here is on design intent — how each car manages airflow based on the problem it’s meant to solve. Using the same simulation setup and visualization style at real-world driving speed, we look at: • Why closed cabins favor preventing turbulence • Why open speedsters must accept and control it • How wake management changes without a roof • The role of geometry, length, and flow separation • Why “messy” flow can still be deliberate and effective All simulations were performed using OpenFOAM, with post-processing focused on flow structure rather than headline numbers. If you’re interested in CFD, automotive aerodynamics, or how airflow design actually works beyond marketing claims, this channel breaks problems down one system at a time. Chapters 00:00 Why Roofless Cars Change Everything 00:30 Two Cars, Two Aerodynamic Problems 01:40 BMW M6 F06 — Closed-Cabin Flow Strategy 04:30 Bugatti Mistral — Managing an Open Cabin 09:20 Side-by-Side: Prevention vs Control 11:00 Design Takeaways (No Winners) 12:00 Final Thoughts Original pictures used in video: https://en.wikipedia.org/wiki/Bugatti_Mistral#/media/File:Bugatti_Mistral_2.jpg https://en.wikipedia.org/wiki/Bugatti_Mistral#/media/File:Bugatti_Mistral_7.jpg Licensed Under: https://creativecommons.org/licenses/by-sa/4.0