| 25.2.1951 | Carrell Speedway [Trophy Dash] | 2 | 8C 2900 B MM | Phil Hill | Phil Hill | 1st |
| 18.3.1951 | GP Buenos Aires | 16 | 8C 2300 | Adolfo Schwelm Cruz | | 5th |
| 18.3.1951 | GP Buenos Aires | 22 | | Carlos Pérez de Villa | | DNF |
| 18.3.1951 | GP Buenos Aires | 48 | | Franco Bruno | | DNS |
| 18.3.1951 | GP Buenos Aires | 52 | | "Paquito" | | 18th |
| 26.3.1951 | Goodwood Easter [4th Formula Libre Handicap] | 32 | P3 Tipo B | Joe Goodhew | | 2nd |
| 1.4.1951 | Main Palm Springs [Sports] | 2 | 8C 2900 B | Phil Hill | Phil Hill | DNF |
| 1.4.1951 | Giro di Sicilia | 211 | 1900 | Cammarata / Tasca | | DNA |
| 1.4.1951 | Giro di Sicilia | 213 | 1900 | Cundari / Di Giacomo | | 42nd |
| 1.4.1951 | Giro di Sicilia | 215 | 1900 | Lanza / Zanardi | | 25th |
| 1.4.1951 | Giro di Sicilia | 217 | 1900 TI | Musmeci / Perrone | | NC |
| 1.4.1951 | Giro di Sicilia | 221 | 1900 | Bernardo Cammarata | | raced |
| 1.4.1951 | Giro di Sicilia | 222 | 1900 | La Motta / Faraco | | DNF |
| 1.4.1951 | Giro di Sicilia | 223 | 1900 | Bonetto / de Giuseppe | | 15th |
| 1.4.1951 | Giro di Sicilia | 225 | 1900 | Lietti / Castelli | | 18th |
| 1.4.1951 | Giro di Sicilia | 228 | 1900 | Eolo | | raced |
| 1.4.1951 | Giro di Sicilia | 352 | 2500 | Ruffolo | | DNF |
| 1.4.1951 | Giro di Sicilia | 436 | 6C 2500 Competizione | Bornigia / Bornigia | Alfa Romeo | 7th |
| 21.4.1951 | BARC Goodwood [Handicap C] | | 2300 | J. I. Bremner | | 2nd |
| 22.4.1951 | National Mar del Plata | | | Roberto Mières | | 1st |
| 22.4.1951 | Thompson [Class 4] | | | Moore | | 3rd |
| 29.4.1951 | Mille Miglia | 408 | | "Gualtiero" | | DNA |
| 29.4.1951 | Mille Miglia | 418 | 6C 2500 | Rolly / Nando | | DNF |
| 29.4.1951 | Mille Miglia | 419 | 6C 2500 Competizione Berlinetta | Rol / Munaron | | DNF |
| 29.4.1951 | Mille Miglia | 422 | 6C 2500 Competizione | Bornigia / Bornigia | | DNF |
| 29.4.1951 | Mille Miglia | 426 | 6C 2500 SS | di Stefano / Ercole | | DNF |
| 29.4.1951 | Mille Miglia | 427 | 412 Spider Vignale | Bonetto / Casnaghi | Felice Bonetto | 6th |
| 29.4.1951 | Mille Miglia | 436 | 6C 2500 | Sartori / Santini | | DNF |
| 12.5.1951 | Giants' Despair Hillclimb | 1 | | David Felix | David H. H. Felix | DNA |
| 12.5.1951 | Giants' Despair Hillclimb | 1 | | David Felix | David H. H. Felix | DNA |
| 12.5.1951 | Giants' Despair Hillclimb | 19 | | Alex Ulmann | Alex E. Ulmann | DNA |
| 12.5.1951 | Giants' Despair Hillclimb | 50 | 6C 1750 | George S. Hendrie | George S. Hendrie | DNA |
| 12.5.1951 | Giants' Despair Hillclimb | 52 | | Albert Garthwaite | Al. A. Garthwaite, Jr. | DNA |
| 12.5.1951 | Giants' Despair Hillclimb | | | Phil Moore | Phil Moore | 17th |
| 26.5.1951 | WECC Boreham [Formula Libre] | 48 | 8C 35 | Dennis Poore | | 1st |
| 26.5.1951 | WECC Boreham [Formula Libre] | 49 | | Jack Fairman | | DNA |
| 26.5.1951 | Preis von Bremgarten | | 2900 | Studer | | raced |
| 26.5.1951 | Preis von Bremgarten | | 412 S | Daetwyler | | 1st |
| 27.5.1951 | SCCA National Pebble Beach [Handicap] | 2 | 8C 2900 B | Phil Hill | Phil Hill | 1st |
| 27.5.1951 | SCCA National Pebble Beach Cup | 2 | 8C 2900 B | Phil Hill | Phil Hill | 4th |
| 16.6.1951 | BOC Silverstone [Relay Handicap] | | | H. E. Rohll | | 2nd |
| 17.6.1951 | GP Portugal | | | Felice Bonetto | | DNF |
| 8.7.1951 | National Mar del Plata | | 8C 2300 Monza 2.6 | Adolfo Schwelm Cruz | | 1st |
| 15.7.1951 | Coppa d'Oro delle Dolomiti | 97 | 6C 2500 | Carlo Lualdi | | DNF |
| 15.7.1951 | Coppa d'Oro delle Dolomiti | 98 | 6C 2500 | Silvano Poli | | 22nd |
| 15.7.1951 | Coppa d'Oro delle Dolomiti | 101 | 6C 2500 Competizione | Mario Bornigia | | 9th |
| 4.8.1951 | National Ibsley [Formula Libre] | 118 | 8C 35 | Dennis Poore | | 1st |
| 6.8.1951 | NSCC Gamston [S+1.95] | 22 | | H. E. Rohll | H. E. Rohll | DNA |
| 6.8.1951 | NSCC Gamston [Formula Libre Handicap] | 22 | | H. E. Rohll | J. E. Rohl | DNA |
| 6.8.1951 | NSCC Gamston [Formula Libre] | 68 | 8C 35 | Dennis Poore | R. D. Poore | 3rd |
| 6.8.1951 | NSCC Gamston [Formula Libre Handicap] | 68 | 8C 35 | Dennis Poore | R. D. Poore | 5th |
| 11.8.1951 | WECC Boreham [Formula Libre] | 21 | 8C 35 | Dennis Poore | D. Poore | DNA |
| 11.8.1951 | WECC Boreham [Formula Libre] | 24 | | Joe Goodhew | J. Goodhew | DNA |
| 11.8.1951 | WECC Boreham [Unlimited] | 103 | 8C | David Lewis | D. Lewis | DNA |
| 18.8.1951 | BARC Goodwood [Handicap D] | 88 | 8C | David Lewis | | 1st |
| 18.8.1951 | BARC Goodwood [Handicap B] | | 8C 2600 | Nigel Mann | Nigel H. Mann | 1st |
| 18.8.1951 | BARC Goodwood [Handicap D] | | 2300 | J. I. Bremner | | 4th |
| 1.9.1951 | SSCC Turnberry [Formula Libre] | 101 | | I. F. Cunningham | | DNA |
| 1.9.1951 | SSCC Turnberry [Sports] | 101 | | I. F. Cunningham | | DNA |
| 8.9.1951 | Wakefield Trophy [Formula Libre] | | P3 | Anthony Powys-Lybbe | | DNS |
| 12.9.1951 | Tour de France | 226 | 1900 TI | di Stefano / Ercole | | raced |
| 16.9.1951 | Ostrava [S2.5] | 26 | | Vladimír Valenta | Brno | raced |
| 23.9.1951 | National Mendoza | | 8C 2300 Monza 2.6 | Adolfo Schwelm Cruz | | 1st |
| 29.9.1951 | Goodwood September [3rd Handicap Formula Libre] | 2 | 159 | Giuseppe Farina | Alfa Romeo | 1st |
| 29.9.1951 | Goodwood September [1st Handicap Formula Libre] | 25 | 8C 2600 | Nigel Mann | | 5th |
| 13.10.1951 | WJC Winfield [Sports] | 39 | | I. F. Cunningham | | DNA |
| 15.10.1951 | 500 mile Rafaela | | 8C 2900 A | Hector Niemitz | | DNF |
| 21.10.1951 | Coppa Sant Ambroeus | | 2500 | Meda / Meda | | 24th |
| 28.10.1951 | Mt. Equinox Hillclimb | | Monza | Bill Lloyd | | 33rd |
| 25.11.1951 | Carrera Panamericana | 19 | 6C 2500 SS Berlinetta Touring | Panini / Panini | | DNF |
| 9.12.1951 | SCCA National Palm Beach | 6 | 8C 2600 Monza | George Huntoon | | 6th |