Norris last led the standings in April, a gap of 189 days, and had not won a race since Hungary in early August. Sunday was his sixth victory of the season, one less than Piastri, and career 10th.
Norris had shown his pace in final practice when he became the third different driver to top the timesheets in the three sessions, punching out an impressive lap 0.345 faster than anyone else.
The win was a first for Ferrari in Mexico since 1990 and fourth of Carlos Sainz's career.
B Sumeeth Reddy, a member of the 2022 Commonwealth Games mixed team silver medal-winning squad, has announced his retirement as an active badminton player to focus entirely on coaching.
Stewards at the Brazilian race summoned Leclerc on Friday, acting on a report from the governing FIA's media delegate and after reviewing a written transcript.
Max Verstappen became the first Formula One driver to take 16 victories in a season
Red Bull's double World champion Max Verstappen won the Mexico City Grand Prix on Sunday to set a Formula One record of 14 victories from a single season, as well as the most points scored.
Charles Leclerc swept to pole position for the Mexico City Formula One Grand Prix on Saturday with Carlos Sainz qualifying second in a surprise Ferrari front-row lockout.
Red Bull's double World champion Max Verstappen swept to pole position at the Mexico City Grand Prix on Saturday with his sights set on a record 14th victory of the season.
Red Bull closed the gap to champions Mercedes in the constructors' standings to one point.