Honda debuted the RA273 at the seventh round of the 1966 season and it had a brand new 3.0L V12 due to the new regulations. The car was used for the first seven races of 1967 and achieved a podium at the South African Grand Prix. John Surtees was Honda's only driver in 1967, and won the Italian Grand Prix with the RA300. It was the car's debut race. Surtees finished the season fourth in the drivers' championship and Honda finished fourth in the constructors' championship, despite having only one driver during the season.