Glossary
Porpoising in F1
Answer
Porpoising is the violent up-and-down bouncing a ground-effect F1 car can suffer at speed. As the floor generates more downforce the car is pulled lower, the underfloor airflow stalls and downforce collapses, the car rises, the airflow reattaches, and the cycle repeats many times a second. It hurts performance and can be physically punishing for drivers.
What causes it
A ground-effect floor makes more downforce the closer it runs to the track, pulling the car down. Below a certain ride height the airflow under the floor stalls, downforce suddenly drops, and the car springs back up, at which point the airflow reattaches and the cycle starts again, producing a rapid oscillation[1].
Why it matters
- It became a major issue when F1 returned to ground-effect floors in 2022, with several drivers reporting back pain after races[1].
- Teams fight it by raising ride height or stiffening the car, but both cost lap time, so it is a performance compromise, not just a comfort problem.
- The name comes from the way the car's nose pitches up and down like a porpoise breaking the water's surface.
Related terms
Sources
- [1]Ground effect (cars) (Wikipedia) (wikipedia-en). Accessed 2026-06-18.
Published 2026-06-18