| 1977 · 500 kms de I'ACF, Dijon-Prenois | 1 | 1 | 1. S3.0 | US Autodelta SpA | Arturo Merzario · Jean-Pierre Jarier | Alfa Romeo 33SC12 ASK | — | 1 | WSPR historical record |
| 1977 · Trofeo Filippo Caracciola, Monza | retired | 3 | S3.0 | US Autodelta SpA | Arturo Merzario · DNS - Jean-Pierre Jarier | Alfa Romeo 33SC12 ASK | — | | WSPR historical record |
| 1977 · Trofeo Ignazio Giunti, Vallelunga | 2 | 1 | 2. S3.0 | Autodelta SpA | Arturo Merzario · DNS - Spartaco Dini | Alfa Romeo 33SC12 | — | 124 | WSPR historical record |
| 1977 · Coppa Florio, Pergusa | 1 | 1 | 1. S3.0 | Autodelta SpA | Arturo Merzario | Alfa Romeo 33SC12 | — | 100 | WSPR historical record |
| 1977 · Prémio International da Costa do Sol, Estoril | 1 | 1 | 1. S3.0 | Autodelta SpA | Arturo Merzario | Alfa Romeo 33SC12 | — | 89 | WSPR historical record |
| 1977 · 500 km Paul Ricard, Le Castellet | 1 | 1 | 1. S3.0 | Autodelta SpA | Arturo Merzario · Jean-Pierre Jarier | Alfa Romeo 33SC12 | — | 150 | WSPR historical record |
| 1977 · 250 km Imola | retired | 1 | S3.0 | Autodelta SpA | Arturo Merzario · DNS - Spartaco Dini | Alfa Romeo 33SC12 | — | 12 | WSPR historical record |
| 1977 · Elan Trophae, Salzburgring | 2 | 1 | 2. S3.0 | Autodelta SpA | Arturo Merzario | Alfa Romeo 33SC12 Turbo | — | 69 | WSPR historical record |
| 1977 · 6 h Mugello | 4 | 18 | 1. GT | Jolly Club | Arturo Merzario · Giuseppe Bianco | Porsche 934 | — | 149 | WSPR historical record |
| 1977 · 6 h Mugello | entry_only | 7 | Gr.5 | Arturo Merzario | Arturo Merzario · Spartaco Dini | BMW 3.0 CSL | — | | WSPR historical record |
| 1976 · March Trophy, Mugello 6 Hours | retired | 16 | T | Zip-Up Racing | Stuart Graham · Reine Wisell · Arturo Merzario | Chevrolet Camaro Z28 | — | 53 | WSPR historical record |
| 1976 · March Trophy, Mugello 6 Hours | retired | 15 | ser.T | Zip-Up Racing | Arturo Merzario · Rune Tobiasson · Stuart Graham · DNS - Reine Wisell | Chevrolet Camaro Z28 | — | 52 | WSPR historical record |
| 1976 · Trofeo Filippo Caracciolo, Monza 4 Hours | retired | 21 | S2.0 | Enzo Osella | Arturo Merzario · "Pal Joe" | Osella PA4 Ferraris | — | 32 | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Imola 500 Kilometres | 2 | 1 | 2. S3.0 | Autodelta SpA | Vittorio Brambilla · Arturo Merzario | Alfa Romeo 33TS12 | — | 96 | WSPR historical record |
| 1976 · Coppa Florio, Enna 4 Hours, Pergusa | retired | 1 | S3.0 | Autodelta SpA | Arturo Merzario · Mario Casoni | Alfa Romeo 33TS12 | — | 48 | WSPR historical record |
| 1976 · Elan Trophy, Salzburgring | retired | 1 | S3.0 | Autodelta SpA | Vittorio Brambilla · Arturo Merzario | Alfa Romeo 33TS12 | — | 16 | WSPR historical record |
| 1976 · Elan Trophy, Salzburgring | entry_only | 2 | S3.0 | Autodelta SpA | Arturo Merzario · Vittorio Brambilla | Alfa Romeo 33SC12 | — | | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Vallelunga 6 Hours | did_not_start | 22 | Gr.5 | "Pal Joe" | Arturo Merzario · "Pal Joe" | BMW 2002 Turbo | — | | WSPR historical record |
| 1976 · World Championship of Maker, 6 Hours of Silverstone | entry_only | 14 | GT | Claude Haldi | Claude Haldi · Arturo Merzario | Porsche Carrera RSR | — | | WSPR historical record |
| 1975 · 1000 km Mugello (150 laps) | 2 | 1 | 2. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Jacky Ickx | Alfa Romeo 33TT12 CC ASK | — | 1 | WSPR historical record |
| 1975 · 800 km Dijon | 1 | 2 | 1. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Jacques Laffite | Alfa Romeo 33TT12 ASK | — | 2 | WSPR historical record |
| 1975 · 800 km Dijon | source_section_running_in_practice | 60T | S3.0 | Willi Kauhsen Racing Team | Arturo Merzario · Jacques Laffite · Henri Pescarolo · Derek Bell | Alfa Romeo 33TT12 | — | | WSPR historical record |
| 1975 · Trofeo F. Carraciolo, Monza | 1 | 2 | 1. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Jacques Laffite | Alfa Romeo 33TT12 ASK | — | 1 | WSPR historical record |
| 1975 · Spa 1000 Kilometres, Spa-Francorchamps | 2 | 1 | 2. S3.0 | US Willi Kauhsen Racing Team | Jacky Ickx · Arturo Merzario | Alfa Romeo 33TT12 ASK | — | | WSPR historical record |
| 1975 · Coppa Florio, Enna-Pergusa | 1 | 1 | 1. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Jochen Mass | Alfa Romeo 33TT12 ASK | — | 2 | WSPR historical record |
| 1975 · Coppa Florio, Enna-Pergusa | source_section_running_in_practice | 1T | S3.0 | — | Arturo Merzario | Alfa Romeo 33TT12 CP | — | | WSPR historical record |
| 1975 · 1000 km Nürburgring | 1 | 1 | 1. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Jacques Laffite | Alfa Romeo 33TT12 ASK | — | | WSPR historical record |
| 1975 · 1000 km Zeltweg | 2 | 1 | 2. S3.0 | Willi Kauhsen Racing Team | Arturo Merzario · Vittorio Brambilla | Alfa Romeo 33TT12 | — | 103 | WSPR historical record |
| 1975 · 1000 km Zeltweg | source_section_running_in_practice | 1T | S3.0 | Willi Kauhsen Racing Team | Arturo Merzario · Vittorio Brambilla | Alfa Romeo 33TT12 | — | | WSPR historical record |
| 1975 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 2 | 3 | 2. S3.0 | US Willi Kauhsen Racing Team | Arturo Merzario · Mario Andretti | Alfa Romeo 33TT12 ASK | — | 1 | WSPR historical record |
| 1975 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | source_section_running_in_practice | 6T | S3.0 | Willi Kauhsen Racing Team | Derek Bell · Arturo Merzario · Mario Andretti · Henri Pescarolo | Alfa Romeo 33TT12 | — | | WSPR historical record |
| 1974 · 1974 24 Hours of Le Mans | DNA | 4 | S 3.0 | Autodelta SpA | Arturo Merzario · Carlo FacettiArturo Merzario Carlo Facetti | Alfa Romeo Tipo 33TT12 | Alfa Romeo 3.0L F12 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1974 · 1000 km Monza | 1 | 3 | 1. S3.0 | US Autodelta SpA | Arturo Merzario · Mario Andretti | Alfa Romeo 33TT12 ASK | — | 1 | WSPR historical record |
| 1974 · 1000-km-Rennen Nürburgring | 9 | 5 | 8. S3.0 | US Autodelta SpA | Arturo Merzario · Brian Redman | Alfa Romeo 33TT12 ASK | — | | WSPR historical record |
| 1974 · 1000 km Imola | retired | 3 | S3.0 | US Autodelta SpA | Arturo Merzario · Jacky Ickx | Alfa Romeo 33TT12 ASK | — | | WSPR historical record |
| 1974 · 1000 km Zeltweg, Österreichring | 5 | 1 | 5. S3.0 | Autodelta SpA | Jacky Ickx · Arturo Merzario · Vittorio Brambilla | Alfa Romeo 33TT12 | — | 152 | WSPR historical record |
| 1974 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | disqualified | 60 | S3.0 | Autodelta SpA | Arturo Merzario · Mario Andretti | Alfa Romeo 33TT12 | — | 171 | WSPR historical record |
| 1974 · Brands Hatch BA 1000 Kilometres | 13 | 54 | 2. GT | Gelo Racing | Arturo Merzario · Manfred Schurti · John Fitzpatrick · DNS - Stuart Graham | Porsche Carrera RSR | — | 197 | WSPR historical record |
| 1973 · 1973 24 Hours of Le Mans | 2 | 16 | S 3.0 | SpA Ferrari SEFAC | Arturo Merzario · Carlos PaceArturo Merzario Carlos Pace | Ferrari 312PB -73 | Ferrari 3.0L F12 | 349 | Wikipedia contributors · CC BY-SA 4.0 |
| 1973 · 24 h Daytona | retired | 20 | GT+2.0 | North American Racing Team | Arturo Merzario · Jean-Pierre Jarier | Ferrari 365 GTB/4 | — | 394 | WSPR historical record |
| 1973 · Watkins Glen 6 Hours | 3 | 11 | 3. S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Carlos Pace | Ferrari 312PB | — | 196 | WSPR historical record |
| 1973 · Vallelunga 6 Hours | 4 | 2 | 4. S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Carlos Pace | Ferrari 312PB | — | 288 | WSPR historical record |
| 1973 · Dijon 1000 Kilometres | 4 | 4 | 4. S3.0 | SpA Ferrari SEFAC | Carlos Pace · Arturo Merzario | Ferrari 312PB | — | 308 | WSPR historical record |
| 1973 · Monza 1000 Kilometres | retired | 2 | S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Carlos Pace | Ferrari 312PB long | — | 7 | WSPR historical record |
| 1973 · Spa 1000 Kilometres | 4 | 2 | 4. S3.0 | SpA Ferrari SEFAC | Carlos Pace · Arturo Merzario | Ferrari 312PB | — | 67 | WSPR historical record |
| 1973 · 57th Targa Florio | source_section_running_in_practice | 3T | S3.0 | SpA Ferrari SEFAC | Jacky Ickx · Brian Redman · Arturo Merzario · Nino Vaccarella | Ferrari 312PB | — | | WSPR historical record |
| 1973 · 57th Targa Florio | retired | 3 | S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Nino Vaccarella | Ferrari 312PB | — | 2 | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | 2 | 2 | 2. S3.0 | SpA Ferrari SEFAC | Carlos Pace · Arturo Merzario | Ferrari 312PB | — | 44 | WSPR historical record |
| 1973 · Austrian 1000 Kilometres, Österreichring, Zeltweg | 6 | 2 | 6. S3.0 | SpA Ferrari SEFAC | Carlos Pace · Arturo Merzario | Ferrari 312PB | — | 164 | WSPR historical record |
| 1972 · Buenos Aires 1000 Kilometres | retired | 22 | S2.0 | Abarth-Osella | Arturo Merzario · Spartaco Dini · DNS - Nasif Estefano | Abarth SE021 | — | 47 | WSPR historical record |
| 1972 · Austrian 1000 Kilometres, Zeltweg | 4 | 4 | 4. S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Sandro Munari | Ferrari 312PB | — | 164 | WSPR historical record |
| 1972 · Watkins Glen 6 Hours | retired | 87 | S3.0 | SpA Ferrari SEFAC | Brian Redman · Arturo Merzario | Ferrari 312PB | — | 136 | WSPR historical record |
| 1972 · Daytona 6 Hours | disqualified | 32 | S2.0 | Abarth-Osella | Arturo Merzario · Alex Soler-Roig | Abarth SE021 | — | 166 | WSPR historical record |
| 1972 · BOAC 1000 Kilometres, Brands Hatch | retired | 21 | S2.0 | Abarth Corse | Arturo Merzario · Toine Hezemans | Abarth Osella SE-021 | — | 16 | WSPR historical record |
| 1972 · Monza 1000 Kilometres | retired | 3 | S3.0 | SpA Ferrari SEFAC | Brian Redman · Arturo Merzario | Ferrari 312PB | — | 32 | WSPR historical record |
| 1972 · Spa 1000 Kilometres | 1 | 3 | 1. S3.0 | SpA Ferrari SEFAC | Brian Redman · Arturo Merzario | Ferrari 312PB | — | 71 | WSPR historical record |
| 1972 · Targa Florio | 1 | 3 | 1. S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Sandro Munari | Ferrari 312PB | — | 11 | WSPR historical record |
| 1972 · Targa Florio | source_section_running_in_practice | 3T | S3.0 | SpA Ferrari SEFAC | Sandro Munari · Arturo Merzario | Ferrari 312PB | — | | WSPR historical record |
| 1972 · ADAC 1000 Kilometres, Nürburgring | 2 | 2 | 2. S3.0 | SpA Ferrari SEFAC | Arturo Merzario · Brian Redman | Ferrari 312PB | — | 44 | WSPR historical record |
| 1971 · Buenos Aires 1000 Kilometres | retired | 24 | P3.0 | SpA Ferrari SEFAC | Ignazio Giunti · Arturo Merzario | Ferrari 312PB | — | 38 | WSPR historical record |
| 1971 · 24 h Daytona Beach | retired | 28 | S | Escuderia Montjuich | Arturo Merzario · José Juncadella | Ferrari 512S | — | 161 | WSPR historical record |
| 1971 · Trofeo Filippo Caracciolo, Monza 1000 Kilometres | retired | 7 | S5.0 | Escuderia Montjuich | Arturo Merzario · José Juncadella | Ferrari 512M | — | 11 | WSPR historical record |
| 1970 · 1970 24 Hours of Le Mans | DNF | 8 | S 5.0 | SpA Ferrari SEFAC | Arturo Merzario · Clay RegazzoniArturo Merzario Clay Regazzoni | Ferrari 512 S | Ferrari 5.0L V12 | 38 | Wikipedia contributors · CC BY-SA 4.0 |
| 1970 · 24 h Daytona Beach | 3 | 28 | 3. S | SpA Ferrari SEFAC | Mario Andretti · Arturo Merzario · Jacky Ickx | Ferrari 512S | — | 676 | WSPR historical record |
| 1970 · Sebring 12 Hours | 35 | 19 | S5.0 | SpA Ferrari SEFAC | Mario Andretti · Arturo Merzario | Ferrari 512S Spyder | — | 227 | WSPR historical record |
| 1970 · BOAC 1000 Kilometres, Brands Hatch | 5 | 2 | 4. S5.0 | SpA Ferrari SEFAC | Chris Amon · Arturo Merzario | Ferrari 512S | — | 225 | WSPR historical record |
| 1970 · 1000 km Monza | 4 | 1 | 4. S5.0 | SpA Ferrari SEFAC | Chris Amon · Arturo Merzario | Ferrari 512S | — | 171 | WSPR historical record |
| 1970 · Targa Florio | retired | 38 | P3.0 | Abarth-Osella | Arturo Merzario · Johannes Ortner | Abarth 3000SP | — | 2 | WSPR historical record |
| 1970 · 1000 km Spa | 7 | 21 | 7. S5.0 | SpA Ferrari SEFAC | Peter Schetty · Arturo Merzario | Ferrari 512S | — | 66 | WSPR historical record |
| 1970 · 1000 km Nürburgring | retired | 57 | S5.0 | SpA Ferrari SEFAC | Ignazio Giunti · Arturo Merzario | Ferrari 512S | — | 2 | WSPR historical record |
| 1969 · 1000 km Monza | retired | 29 | P1.0 | "Pal Joe" | "Pal Joe" · Arturo Merzario | Fiat-Abarth 1000SP | — | 3 | WSPR historical record |
| 1967 · GP Mugello, Circuito del Mugello | 46 | 129 | 4. GT1.3 | — | Giuseppe Mariella · Arturo Merzario | Lancia Fulvia HF/R | — | 6 | WSPR historical record |
| 1964 · 500 km Nürburgring | retired | 61 | T1.0 | Scuderia Sant Ambroeus | Mario Saruggia · Arturo Merzario | Fiat-Abarth 1000 Berlina | — | 7 | WSPR historical record |
| 1964 · La Consuma Hillclimb | 81 | 150 | 0. T1.0 | — | Arturo Merzario | Fiat-Abarth 1000 Berlina | — | 1 | WSPR historical record |
| 1963 · Coppa Inter-Europa, Monza 3 Hours | 12 | 5 | 9. GT1.3 | — | Arturo Merzario | Alfa Romeo Giulietta SZ | — | 79 | WSPR historical record |