Mexico City GP build-up: Antonelli's title shot meets Pérez's 300th start and Cadillac's Reforma run

Formula 1 has no time to catch its breath after Austin. The second leg of the Americas triple-header takes place this weekend at the Autódromo Hermanos Rodríguez, and the Mexico City Grand Prix now carries two big storylines: Kimi Antonelli's chance to seal his first world title, and Sergio Pérez's 300th Grand Prix start in front of his home crowd.

Antonelli's title moment

Antonelli arrives in Mexico on 365 points after winning in Austin, 123 clear of Mercedes team-mate George Russell and 124 ahead of Ferrari's Lewis Hamilton, with 125 points remaining. A top-nine finish will be enough to make him champion, and he will also clinch the title if neither Russell nor Hamilton wins the race. Doing so would make the 20-year-old the youngest champion in the sport's history.

Antonelli has said his approach will not change. After Austin he explained that he wants to keep fighting for wins and enjoy the run-in, crediting his team and his father with helping him block out the noise. Russell, meanwhile, needs answers quickly after describing his Austin pace as poor.

Pérez's milestone and Cadillac's first visit

For the home fans, the weekend revolves around Pérez. If all goes to plan, Mexico City will be his 300th Grand Prix start, and it will be Cadillac's first race in Mexico. His season in the new American team has been difficult: he has yet to score a point and finished 19th in Austin.

Speaking before the triple-header, Pérez admitted it was "tough to digest" for supporters who were used to seeing him fight for victories, but said they understood the project. He described returning home as something special to share with the whole country.

The celebrations start before a wheel turns at the track. Cadillac and the Mexico City Grand Prix organisers have scheduled a show run on Paseo de la Reforma on Wednesday 28 October, starting at 10am local time (midnight on Thursday in Malaysia). It will be Pérez's first demonstration on Reforma since 2021, when a crowd reported at more than 100,000 watched him drive a Red Bull, and it marks Cadillac's first public outing on Mexican soil. Demand for the weekend has been strong, with reports that race tickets have sold out.

The altitude challenge

The circuit sits more than two kilometres above sea level, and the thin air makes it one of the most unusual tracks on the calendar. Lower air density reduces downforce and cooling, so teams run high-downforce packages that still feel light on grip, while power units and brakes have to cope with weaker cooling. The race runs over 71 laps of the 4.304-kilometre layout, a distance of 305.354 kilometres, and it is a conventional weekend with no sprint.

There will also be some unfamiliar faces in Friday's first practice session, including Freddie Slater, who has already been confirmed for an FP1 outing with Audi.

Constructors' race to watch

Beyond the drivers' title, the teams' fight is worth following. Mercedes lead Ferrari by 133 points, while McLaren and Red Bull arrive level on 355 points after Austin, a battle that could swing on the reliability problems Max Verstappen described in Texas.

Key takeaways

• Antonelli can clinch the 2026 title in Mexico City with a top-nine finish.
• Sergio Pérez is set to make his 300th Grand Prix start at his home race.
• Cadillac's Reforma show run with Pérez takes place on Wednesday 28 October.
• The 71-lap race at high altitude is a standard weekend with no sprint.
• McLaren and Red Bull are tied on 355 points in the constructors' standings.

FAQ

When is the Mexico City Grand Prix? The race is on Sunday 1 November local time, which is 4am on Monday 2 November in Malaysia.

Is this Sergio Pérez's 300th F1 race? If he starts as planned, Mexico City will be his 300th Grand Prix start, and his first home race with Cadillac.

When is the Pérez show run on Reforma? Wednesday 28 October from 10am Mexico City time, which is midnight going into Thursday 29 October in Malaysia.

Sources: RacingNews365, Uno TV, Formula1.com, Yahoo Sports, Grande Premio