Grand Chelem or grand slam in F1 is when a driver qualifies for pole position, leads every lap and completes the fastest lap, and wins the race. In the history of F1, only a handful of drivers to date have managed to score a grand slam in their careers.
The latest grand slam was at the 2022 Emilia Romagna Grand Prix by Max Verstappen. There has been a total of 26 grand slams in 65 races. Sebastian Vettel scored a grand slam in two consecutive races.
Lewis Hamilton has a total of 6 grand slams in his bag. The only driver scoring more grand slams than Lewis was Jim Clark with 8 Grand Chelems.