Venturi Tunnel

A Venturi Tunnel is an aerodynamic design feature on the underbody of racing cars that creates downforce by manipulating airflow underneath the vehicle.

These tunnel-shaped channels work using the Venturi effect—as air flows through the narrowing section, it accelerates and creates a low-pressure zone beneath the car. This pressure difference effectively "sucks" the car toward the track, increasing grip without adding significant drag, allowing for faster cornering speeds.

Venturi Tunnels were prominent in Formula 1 during the late 1970s before being banned. They returned with the 2022 F1 regulations as a key performance element, though they can cause "porpoising"—a bouncing effect at high speeds when airflow becomes unstable through the tunnels.