Honda RA273
The Honda RA273 was a Formula One racing car used by the Honda team in the 1966 [Formula One season|1966] and 1967 [Formula One season]s.
The engine was re-designed from the RA272's 1,500cc V12 to a brand new 3,000cc V12 due to the change of regulations before the 1966 season. The new engine was designed by Shoichiro Irimajiri.
Formula One World Championship results
| Year | Entrant | Engines | Drivers | Tyres | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | WDC | Pts. |
| 1966 | Honda R & D Company | Honda V12 | MON | BEL | FRA | GBR | NED | GER | ITA | USA | MEX | 3 | 8th | ||||
| 1966 | Honda R & D Company | Honda V12 | Ronnie Bucknum | Ret | 8 | 3 | 8th | ||||||||||
| 1966 | Honda R & D Company | Honda V12 | Richie Ginther | Ret | NC | 4 | 3 | 8th | |||||||||
| 1967 | Honda R & D Company | Honda V12 | RSA | MON | NED | BEL | FRA | GBR | GER | CAN | ITA | USA | MEX | 20 | 4th | ||
| 1967 | Honda R & D Company | Honda V12 | John Surtees | 3 | Ret | Ret | Ret | 6 | 4 | 20 | 4th |
Only 8 of the 20 points were scored with the Honda RA273; the remainder were scored with the Honda RA300
Non-Championship Formula One results
| Year | Entrant | Engine | Driver | Tyres | 1 | 2 | 3 | 4 | 5 | 6 |
| 1967 | Honda R & D Company | Honda V12 | ROC | SPC | INT | SYR | OUL | ESP | ||
| 1967 | Honda R & D Company | Honda V12 | John Surtees | Ret | 3 |