The constructor that won the only Formula One Constructors’ Championship it entered, in 2009, was Brawn GP.
Brawn GP was created after Honda withdrew from Formula One before the 2009 season. Team principal Ross Brawn led a management buyout, and the renamed team used Mercedes engines while retaining Jenson Button and Rubens Barrichello as drivers. Its BGP 001 car had been developed originally as Honda’s RA109.
The car’s controversial double-diffuser aerodynamic design gave Brawn a major early-season advantage. Button won six of the first seven races, while the team scored a debut 1–2 finish at the 2009 Australian Grand Prix. Brawn secured the Constructors’ Championship at the Brazilian Grand Prix, with Button clinching the Drivers’ title at the same event.
Brawn competed only in 2009, winning eight of the season’s 17 races and finishing with 172 points. Mercedes bought the team for 2010, making Brawn’s title a uniquely perfect championship record rather than the start of a long-running constructor’s history.