Who is the only driver to have won the World Championship with four different constructors?

Juan Manuel Fangio is the only driver to have won the World Championship with four different constructors.

The Argentine won five World Drivers’ Championship titles between 1951 and 1957. His championships came with Alfa Romeo in 1951, Mercedes-Benz in 1954 and 1955, Ferrari in 1956, and Maserati in 1957.

Fangio’s achievement is especially notable because Formula One teams were often called constructors, and drivers commonly changed teams during that era. His five titles were also a championship record until Michael Schumacher won his sixth in 2003.

A common mix-up is confusing Fangio’s four-constructor record with the record for most championships. Schumacher and Lewis Hamilton have won more titles overall, but neither won a championship with four different constructors.