Why is Mexico an aerodynamic challenge for Formula 1 cars?
At a circuit situated above 2,200 metres above sea level, teams do not set up their cars as they do for most other races. The thinner air alters downforce, drag and cooling, while the turbocharger has to compensate for the lack of oxygen.
Okretaji · 31 October 2026 · Technical explanation
The Autódromo Hermanos Rodríguez is situated at approximately 2,240 metres above sea level. At this altitude, the air is noticeably thinner than at sea level. For a road car this is already noticeable, but for a Formula 1 car, whose performance heavily relies on aerodynamics and cooling, the change is even more significant.
Less air means less downforce
Aerodynamic downforce is created when wings, the floor and the bodywork channel the air so that the car is pressed down onto the asphalt. In simplified terms, the force depends on air density, the square of the speed and the aerodynamic coefficients. When air density drops, downforce also drops at the same speed and with the same aerodynamic package.
At the same time, air drag also drops. This can help top speed on long straights, but less downforce means less grip in fast corners and a greater load on mechanical grip, tyres and the driver. This is why Mexico creates an unusual compromise: cars can have wing configurations that look like those for a high-downforce circuit, yet still not achieve the usual level of aerodynamic load.
Cooling and the turbocharger
Thinner air also makes it harder to dissipate heat through the radiators. Teams have to keep an eye on the temperatures of the power unit, brakes and other systems, so cooling openings and airflow become an important part of the setup. Larger openings can help temperatures, but usually increase aerodynamic drag.
Turbocharged engines can compensate for some of the lack of air density by having the compressor work harder and increasing the intake air pressure. However, this does not mean there are no consequences: the turbine, compressor and cooling systems operate under different conditions and teams must manage temperatures and energy demands.
Why does this change the race?
In Mexico, it is not just about who has the most wing. Engineers seek a balance between cornering stability, straight-line speed, temperature and tyre degradation. A driver may feel that the car slides more than they would expect from a setup that visually looks very aggressive.
Sources
- Mercedes-AMG – technical challenges of the circuit at over 2,200 metres
- Formula 1 – circuit and weekend data
The photograph of the circuit was taken in 2025 and serves as an illustration of the location, it does not show a car during the current weekend. CC BY-SA 4.0 licence.