| 1967 · 1000 km Spa | retired | 50 | S2.0 | Mike De Udy | Roy Pike · Colin Davis | Porsche 906 | — | | WSPR historical record |
| 1967 · 51st Targa Florio, Piccolo Madonie | retired | 226 | P+2.0 | Porsche System Engineering | Gerhard Mitter · Colin Davis | Porsche 910/8 | — | 1 | WSPR historical record |
| 1967 · GP Mugello, Circuito del Mugello | retired | 16 | P2.0 | Autodelta | Colin Davis · Spartaco Dini | Alfa Romeo 33 | — | 3 | WSPR historical record |
| 1966 · 1966 24 Hours of Le Mans | 4 | 30 | P 2.0 | Porsche System Engineering | Jo Siffert · Colin DavisJo Siffert Colin Davis | Porsche 906 /6 LH | Porsche 1991cc F6 | 339 | Wikipedia contributors · CC BY-SA 4.0 |
| 1966 · 1000 km Monza | 7 | 29 | 3. P2.0 | Porsche System Engineering | Colin Davis · Dieter Glemser | Porsche 906 | — | 94 | WSPR historical record |
| 1966 · 1000 km Monza | entry_only | 12 | P+3.0 | David Piper | Jo Siffert · Colin Davis | Ferrari 330P2 | — | | WSPR historical record |
| 1966 · 50th Targa Florio, Piccolo Madonie | 42 | 224 | P+2.0 | Porsche System Engineering | Günther Klass · Colin Davis | Porsche 906-8 | — | 7 | WSPR historical record |
| 1965 · 1965 24 Hours of Le Mans | DNF | 33 | P 2.0 | Porsche System Engineering | Colin Davis · Gerhard MitterColin Davis Gerhard Mitter | Porsche 904 /8 | Porsche 1985cc F8 | 20 | Wikipedia contributors · CC BY-SA 4.0 |
| 1965 · 49th Targa Florio, Piccolo Madonie | 2 | 182 | 1. P2.0 | Porsche System Engineering | Colin Davis · Gerhard Mitter · DNS - Jo Bonnier · DNS - Graham Hill | Porsche 904/8 Bergs | — | 10 | WSPR historical record |
| 1965 · XI. Int. ADAC 1000 Kilometers Rennen Nürburgring | 9 | 21 | 5. P2.0 | Porsche System | Gerhard Mitter · Colin Davis | Porsche 904/6 | — | 42 | WSPR historical record |
| 1965 · XI. Int. ADAC 1000 Kilometers Rennen Nürburgring | source_section_running_in_practice | 21T | P2.0 | Porsche System | Gerhard Mitter · Colin Davis · Jo Bonnier · Jochen Rindt | Porsche 904/8 Bergs | — | | WSPR historical record |
| 1964 · 1964 24 Hours of Le Mans | DNF | 30 | P 2.0 | Porsche System Engineering | Colin Davis · Gerhard MitterColin Davis Gerhard Mitter | Porsche 904 /8 | Porsche 1981cc F8 | 244 | Wikipedia contributors · CC BY-SA 4.0 |
| 1964 · Grand Prix Reims 12 Hours | retired | 33 | P2.0 | Porsche System Engineering | Edgar Barth · Colin Davis · DNS - Herbert Linge | Porsche 904/8 | — | | WSPR historical record |
| 1964 · Coppa di Citta Enna | entry_only | - | GT2.0 | — | Colin Davis | Porsche 356B 2000 | — | | WSPR historical record |
| 1964 · 1000 km de Paris, Montlhéry | 3 | 30 | 1. P2.0 | Porsche System | Edgar Barth · Colin Davis | Porsche 904/8 | — | 126 | WSPR historical record |
| 1964 · Targa Florio | 1 | 86 | 1. GT2.0 | US Porsche System Engineerin | Antonio Pucci · Colin Davis | Porsche 904 GTS ASK | — | g | WSPR historical record |
| 1964 · 1000 km Nürburgring | retired | 127T | P2.0 | US Porsche System Engineerin | Colin Davis · Edgar Barth | Porsche 904 GTS ASK | — | g | WSPR historical record |
| 1964 · 1000 km Nürburgring | did_not_start | 127 | P2.0 | Porsche System Engineering | Edgar Barth · Colin Davis | Porsche 904/8 | — | | WSPR historical record |
| 1962 · 1962 24 Hours of Le Mans | DNF | 16 | E 3.0 | Scuderia SSS Republica di Venezia | Carlo Maria Abate · Colin DavisCarlo Maria Abate Colin Davis | Ferrari 250 GT Drogo | Ferrari 3.0L V12 | 30 | Wikipedia contributors · CC BY-SA 4.0 |
| 1962 · 1000 km de Paris, Montlhéry | 3 | 15 | 3. GT+2.0 | Scuderia SSS Rep. di Venezi | Ludovico Scarfiotti · Colin Davis | Ferrari 250 GT SWB D | — | 127 | WSPR historical record |
| 1962 · Sebring 12 Hours | 41 | 22 | GT3.0 | Scuderia SSS Republica di V | Fernand Tavano · Colin Davis · DNS - Lucien Bianchi | Ferrari 250 GT | — | 119 | WSPR historical record |
| 1962 · 46th Targa Florio | retired | 154 | S3.0 | Scuderia SSS Republica di V | Carlo Maria Abate · Colin Davis | Maserati Tipo 64 | — | 4 | WSPR historical record |
| 1962 · VIII. Int. ADAC 1000 km Nürburgring | entry_only | 46 | GT3.0 | Scuderia Serenissima | Carlo Maria Abate · Colin Davis | Ferrari 250 GTO | — | | WSPR historical record |
| 1962 · VIII. Int. ADAC 1000 km Nürburgring | entry_only | 91 | S3.0 | Scuderia Serenissima | Carlo Maria Abate · Colin Davis | Ferrari | — | | WSPR historical record |
| 1961 · 1961 24 Hours of Le Mans | DNF | 50 | S 850 | Automobili Osca | Colin DavisJean Laroche Colin Davis | O.S.C.A. Sport 750 | OSCA 746cc S4 | 85 | Wikipedia contributors · CC BY-SA 4.0 |
| 1961 · Targa Florio | retired | 120 | S1.6 | Osca | Ludovico Scarfiotti · Colin Davis | Osca 1500S | — | 9 | WSPR historical record |
| 1961 · 1000 km Nürburgring | 4 | 61 | 1. GT+2.0 | Scuderia Serenissima | Carlo Maria Abate · Colin Davis | Ferrari 250 GT SWB | — | 43 | WSPR historical record |
| 1961 · Grand Prix Pescara, 4 h Testa Rosa | 5 | 28 | 3. S2.0 | Pescara | Colin Davis | Osca S1600 | — | 21 | WSPR historical record |
| 1960 · Targa Florio | retired | 188 | S2.0 | Scuderia Serenissima | Colin Davis · Raffaele Cammarota | Cooper T49 Monaco M | — | 6 | WSPR historical record |
| 1960 · 1000 km Nürburgring | 8 | 77 | 1. GT+2.0 | Scuderia Serenissima | Carlo Maria Abate · Colin Davis | Ferrari 250 GT LWB | — | 41 | WSPR historical record |
| 1959 · 1959 24 Hours of Le Mans | DNF | 50 | GT750 | A. de Tomaso (private entrant) | Alejandro de Tomaso · Colin DavisAlejandro de Tomaso Colin Davis | D.B. HBR-5 Spyder | Panhard 745cc F2 | 63 | Wikipedia contributors · CC BY-SA 4.0 |
| 1959 · Targa Florio | 6 | 38 | 1. GT1.3 | Scuderia Sant Ambroeus | "Dario Sepe" · Colin Davis · Mario Sannino | Alfa Romeo Giulietta SV Zag | — | 14 | WSPR historical record |
| 1959 · 1000 km Nürburgring | retired | 30 | S1.5 | Alejandro de Tomaso | Colin Davis · Alejandro de Tomaso - DND | Osca FS1500 | — | 1 | WSPR historical record |
| 1958 · 1958 24 Hours of Le Mans | 10 | 42 | S750 | Automobili Osca | Alejandro de Tomaso · Colin DavisAlejandro de Tomaso Colin Davis | O.S.C.A. 750S | OSCA 749cc S4 | 252 | Wikipedia contributors · CC BY-SA 4.0 |
| 1958 · 42nd Targa Florio | retired | 70 | S1.5 | Automobili Osca | Colin Davis · DNS - Alejandro de Tomaso | Osca MT4 1500 | — | | WSPR historical record |
| 1958 · 23rd R.A.C. Tourist Trophy, Goodwood | entry_only | 51 | S1.1 | I. de Tomaso | Alejandro de Tomaso · Colin Davis | Osca 1100S | — | | WSPR historical record |
| 1957 · 1957 24 Hours of Le Mans | DNA | 43 | S1.1 | Automobili O.S.C.A. | Colin DavisGuilio Cabianca Colin Davis | O.S.C.A. MT-4 | OSCA 1098cc S4 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1954 · Tourist Trophy, Dundrod | not_classified | 23 | S2.0 | Gilby Engineering | Colin Davis · Horace Gould | Maserati A6GCS | — | 60 | WSPR historical record |