An F1 car is shaped to push itself into the ground. That push is Downforce: air flowing over and under the car presses it onto the track, so the tyres can grip far harder than the car’s weight alone would allow. Downforce is why F1 cars take corners at speeds that would put a road car into the wall.
The trade-off
Downforce has a price: drag. The same wings that press the car down also slow it in a straight line. For decades, every set-up was a compromise between grip in the corners and speed on the straights.
Active aero breaks the compromise
In 2026 the front and rear wings both move. Corner Mode - flaps closed - gives full downforce for cornering. Straight Mode - flaps open, wings flattened - sheds drag on the straights. The car can have high grip and low drag, just not at the same moment.
This exists largely because of the power unit. With half the power coming from a battery that drains fast, the cars need less drag to avoid running out of energy on long straights. Straight Mode is as much an efficiency tool as a speed one.
Smaller, lighter cars
| 2025 | 2026 | |
|---|---|---|
| Maximum wheelbase | 3,600 mm | 3,400 mm |
| Width | 2,000 mm | 1,900 mm |
| Minimum weight (with driver, without fuel) | 800 kg | 768 kg |
Shorter and narrower cars are more agile and easier to race side by side. The weight cut came from the smaller dimensions, narrower tyres and the loss of the MGU-H.
Dirty air
A car disturbs the air behind it. A following car running into that dirty air loses downforce, slides, and overheats its tyres - which is why closing the last second on a rival is so hard. Every rules reset since 2022 has tried to shrink that wake.