The following data considered for the Driver Ratings:
Number of seasons in which a driver was actively involved in the Formula 1 World Championship
Number of Championship Grand Prix starts
Number of times a driver has been classified at finish
Adjusted points (9-6-4-3-2-1 for the top-six) earned by a driver in a season and over a career
Number of times a driver finished in the top-eight position in the final World Championship standings
Number of times a driver recorded fastest qualifying time and/or achieved the pole position
Number Championship Grand Prix wins
Number of times a driver has led the World Championship points classification
Number of podiums, top-six and top-ten race results
Amount of kilometers completed by a driver during a career
Number of times a driver led a race and amount of kilometers in the lead
Number of times a driver qualified in a top-three position
Number of times a driver was disqualified in the race or during qualifying
Number of times a driver retired due to collision, spin, or other accident
Number of times a driver finished higher than his starting grid position
Nominal credit is given for non-Championship race wins
Every driver I could identify as driving current-regulation car during a Grand Prix weekend receives credit. This credit increases when a driver participates in an official practice, qualifying, and the race. A Grand Prix start counts when a driver is on the starting grid to take a ‘green flag’, even if that race is stopped and rescinded and the driver takes no part in the re-start. Of course, the drivers taking part in such annulled start as well as the re-start receive single GP start credit. A driver starting the race from the pit-lane also receives a GP start credit. If, however, a driver breaks-down on the starting grid and the start is aborted, the driver is considered a non-starter. The same applies to any driver who retires on a formation lap. Those not on the starting grid but joining the race in progress as relief driver are credited with a GP start. BE21 race result is not considered.
1950-1960 Indy 500 races were part of the Formula 1 World Championship. Nonetheless, starts and non-starts recorded during those races by Troy Ruttman, Rodger Ward, Alberto Ascari, Jorge Daponte, John Fitch, Giuseppe Farina, Juan Manuel Fangio, Chuck Daigh, and Lloyd Ruby are not considered here.