Altitude makes Mexico City an outlier and worth treating separately from a team's general form. Thin air means maximum wings produce modest downforce, so the cars are quick in a straight line and slippery in the corners, and cooling capacity becomes a genuine performance differentiator. Braking is compromised, tyres struggle to reach working temperature, and locking up into Turn 1 is common. That first corner is wide enough to invite three cars in and frequently produces contact and safety cars, so lap-one survival is a real variable. Qualifying position helps but the long run to Turn 1 makes places gettable. Favour packages with cooling headroom and drivers who stay out of trouble early.