Glossary
Ground effect in F1
Answer
Ground effect is downforce generated by accelerating airflow underneath the car rather than over the wings. Shaped underfloor tunnels create a low-pressure region that sucks the car to the track, giving grip with less drag than wings alone. F1 returned to ground-effect floors in 2022 to let cars follow each other more closely; the 2026 rules reduce it again.
How it works
Shaping the floor into Venturi tunnels speeds the air flowing beneath the car, which lowers its pressure and effectively sucks the car down onto the road. Because that downforce comes from the floor rather than large wings, it adds grip without the heavy drag penalty wings carry[1].
Why F1 cares
- F1 reintroduced ground-effect floors for 2022 specifically to cut the turbulent dirty air cars leave behind, so they could follow and overtake more easily[1].
- The downside is porpoising, a bouncing that can appear when the airflow under the floor repeatedly stalls and recovers.
- The 2026 regulations dial ground effect back, narrowing the floor as part of making the cars smaller and less downforce-dependent[2].
Related terms
Sources
- [1]Ground effect (cars) (Wikipedia) (wikipedia-en). Accessed 2026-06-18.
- [2]FIA unveils Formula 1 regulations for 2026 and beyond (formula1). Accessed 2026-06-18.
Published 2026-06-18