| 27.3.1988 | 500 km Monza | 1 | Sierra RS 500 | Niedzwiedz / Hahne | Ford Texaco Racing Team | 2nd |
| 27.3.1988 | 500 km Monza | 2 | Sierra RS 500 | Dieudonné / Soper | Ford Texaco Racing Team | 1st |
| 27.3.1988 | 500 km Monza | | Sierra RS 500 | Lombardi / Rebai | Jolly Club | DNS |
| 17.4.1988 | 500 km Donington | 1 | Sierra RS 500 | Niedzwiedz / Ludwig | Ford Texaco Eggenberger Racing Team | DNF |
| 17.4.1988 | 500 km Donington | 2 | Sierra RS 500 | Dieudonné / Soper | Ford Texaco Eggenberger Racing Team | DNF |
| 17.4.1988 | 500 km Donington | 4 | Sierra RS 500 | Allam / Hahne | Wolf-Racing | DNF |
| 17.4.1988 | 500 km Donington | 5 | Sierra RS 500 | Roberto Orlandi | Jolly Club Bergano | DNA |
| 17.4.1988 | 500 km Donington | 6 | Sierra RS 500 | Romeo Camathias | Jolly Club Bergano | DNA |
| 17.4.1988 | 500 km Donington | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | DNQ |
| 17.4.1988 | 500 km Donington | 18 | Sierra RS Cosworth | Oppitzhauser / Moczár | Oppitzhauser-Kuelker Racing Team | DNF |
| 17.4.1988 | 500 km Donington | 20 | Sierra RS 500 | Simonsen / Simonsen | Team CMS Sweden | DNA |
| 17.4.1988 | 500 km Donington | 21 | Sierra RS 500 | Goode / Newman | Listerine/Texaco Racing | DNF |
| 8.5.1988 | 500 km Estoril | 1 | Sierra RS 500 | Niedzwiedz / Soper | Ford Texaco Eggenberger Racing Team | 1st |
| 8.5.1988 | 500 km Estoril | 2 | Sierra RS 500 | Dieudonné / Ludwig | Ford Texaco Eggenberger Racing Team | 3rd |
| 8.5.1988 | 500 km Estoril | 4 | Sierra RS 500 | Allam / Hahne | Wolf Racing | DNF |
| 8.5.1988 | 500 km Estoril | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 7th |
| 8.5.1988 | 500 km Estoril | | Sierra RS 500 | Orlandi / Castagna / Siena | Jolly Club | DNF |
| 8.5.1988 | 500 km Estoril | | Sierra RS 500 | Amorim / Meireles | | DNF |
| 15.5.1988 | 4 h Jarama | 1 | Sierra RS 500 | Ludwig / Soper | Ford Texaco Eggenberger Racing Team | 1st |
| 15.5.1988 | 4 h Jarama | 2 | Sierra RS 500 | Dieudonné / Niedzwiedz | Ford Texaco Eggenberger Racing Team | 2nd |
| 15.5.1988 | 4 h Jarama | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 7th |
| 15.5.1988 | 4 h Jarama | | Sierra RS 500 | Orlandi / Castagna | Jolly Club | 17th |
| 15.5.1988 | 4 h Jarama | | Sierra RS 500 | Camathias / Brancatelli | Jolly Club | DNF |
| 29.5.1988 | 500 km Dijon | 1 | Sierra RS 500 | Brancatelli / Dieudonné | Ford Texaco Eggenberger Racing Team | 2nd |
| 29.5.1988 | 500 km Dijon | 2 | Sierra RS 500 | Niedzwiedz / Soper | Ford Texaco Eggenberger Racing Team | 1st |
| 29.5.1988 | 500 km Dijon | 5 | Sierra RS 500 | Orlandi / Castagna / Camathias | Jolly Club | DNF |
| 29.5.1988 | 500 km Dijon | 14 | Sierra RS 500 | Tassin / Feitler / Andruet | Euromotor/Luigi | DNQ |
| 29.5.1988 | 500 km Dijon | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 9th |
| 29.5.1988 | 500 km Dijon | 27 | Sierra RS 500 | Metge / Jaussaud | Bavaria Automobiles | DNF |
| 5.6.1988 | 500 km Vallelunga | 1 | Sierra RS 500 | Ludwig / Soper | Ford Texaco Eggenberger Racing Team | DNF |
| 5.6.1988 | 500 km Vallelunga | 2 | Sierra RS 500 | Dieudonné / Niedzwiedz | Ford Texaco Eggenberger Racing Team | 1st |
| 5.6.1988 | 500 km Vallelunga | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 5th |
| 5.6.1988 | 500 km Vallelunga | | Sierra RS 500 | Camathias / Castagna / Orlandi | Jolly Club | DNF |
| 10.7.1988 | 500 km Nürburgring | 1 | Sierra RS 500 | Ludwig / Soper | Ford Texaco Eggenberger | 1st |
| 10.7.1988 | 500 km Nürburgring | 2 | Sierra RS 500 | Brancatelli / Dieudonné | Ford Texaco Eggenberger | 2nd |
| 10.7.1988 | 500 km Nürburgring | 3 | Sierra RS 500 | Frank Biela | Ford Texaco Eggenberger | DNA |
| 10.7.1988 | 500 km Nürburgring | 4 | Sierra RS 500 | Allam / Hahne | Wolf-Racing | DNF |
| 10.7.1988 | 500 km Nürburgring | 5 | Sierra RS Cosworth | Orlandi / Castagna | Jolly Club Bergamo | DNF |
| 10.7.1988 | 500 km Nürburgring | 6 | Sierra RS Cosworth | Siena / Camathias | Jolly Club Bergamo | 8th |
| 10.7.1988 | 500 km Nürburgring | 14 | Sierra RS Cosworth | Tassin / Feitler | Euro Luigi Racing | 12th |
| 10.7.1988 | 500 km Nürburgring | 15 | Sierra RS Cosworth | Feitler / Andruet | Euro Luigi Racing | DNA |
| 10.7.1988 | 500 km Nürburgring | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 11th |
| 10.7.1988 | 500 km Nürburgring | 18 | Sierra RS Cosworth | Oppitzhauser / Moczár | Oppitzhauser Kuelkker Racing Team | DNF |
| 10.7.1988 | 500 km Nürburgring | 22 | Sierra RS 500 | Shimizu / Yokoshima | Object T | 7th |
| 10.7.1988 | 500 km Nürburgring | 50 | Mustang 5.0 GT | Ruch / Ruch | | DNF |
| 31.7.1988 | 24 h Spa | 1 | Sierra RS 500 | Dieudonné / Boutsen / Ludwig | Ford Texaco Eggenberger Racing Team | 2nd |
| 31.7.1988 | 24 h Spa | 2 | Sierra RS 500 | Brancatelli / Theys / Gachot | Ford Texaco Eggenberger Racing Team | DNF |
| 31.7.1988 | 24 h Spa | 3 | Sierra RS 500 | Schneider / Biela / Soper | Ford Texaco Eggenberger Racing Team | 4th |
| 31.7.1988 | 24 h Spa | 4 | Sierra RS 500 | Allam / Hahne | Wolf Racing | DNA |
| 31.7.1988 | 24 h Spa | 5 | Sierra RS 500 | Brand / Castagna / Vitale | Jolly Club Bergamo | DNF |
| 31.7.1988 | 24 h Spa | 6 | Sierra RS 500 | Orlandi / Toffoli / Siena | Jolly Club Bergamo | 17th |
| 31.7.1988 | 24 h Spa | 14 | Sierra RS 500 | Tassin / Feitler / Andruet | Euro Luigi Racing | DNF |
| 31.7.1988 | 24 h Spa | 15 | Sierra RS 500 | Ballot-Léna / Ricci / Cremer | Euro Luigi Racing | DNF |
| 31.7.1988 | 24 h Spa | 17 | Sierra RS 500 | Bornebusch / Wolff / de Sordi | K. Bornebusch | DNF |
| 31.7.1988 | 24 h Spa | 26 | Sierra RS 500 | Sourd / Metge / Jaussaud | Bavaria Auto | DNF |
| 31.7.1988 | 24 h Spa | 27 | Sierra RS 500 | de Thoisy / de Radigues / Haezebrouck | Bavaria Auto | DNF |
| 31.7.1988 | 24 h Spa | 33 | Sierra RS 500 | Bolderheij / van Hilten / Winderickx | Bolderheij | DNF |
| 21.8.1988 | ETCC Zolder | 1 | Sierra RS 500 | Brancatelli / Soper | Ford Texaco Eggenberger Racing Team | DNF |
| 21.8.1988 | ETCC Zolder | 2 | Sierra RS 500 | Ludwig / Soper | Ford Texaco Eggenberger Racing Team | DNF |
| 21.8.1988 | ETCC Zolder | 3 | Sierra RS 500 | Dieudonné / Biela | Ford Texaco Eggenberger Racing Team | 2nd |
| 21.8.1988 | ETCC Zolder | 14 | Sierra RS 500 | Tassin / Andruet | Euromotor/Luigi | 3rd |
| 21.8.1988 | ETCC Zolder | 15 | Sierra RS 500 | Feitler / Cremer | Euromotor/Luigi | raced |
| 21.8.1988 | ETCC Zolder | 17 | Sierra RS 500 | Larsson / de Sordi / Bornebusch | Bornebusch Racing | 7th |
| 21.8.1988 | ETCC Zolder | | Sierra RS 500 | Oberndorfer / Hahne | Wolf Racing | 5th |
| 4.9.1988 | Tourist Trophy | 1 | Sierra RS 500 | Niedzwiedz / Ludwig | Ford Texaco Eggenberger Racing Team | 3rd |
| 4.9.1988 | Tourist Trophy | 2 | Sierra RS 500 | Dieudonné / Soper | Ford Texaco Eggenberger Racing Team | 2nd |
| 4.9.1988 | Tourist Trophy | 3 | Sierra RS 500 | Brancatelli / Schneider | Ford Texaco Eggenberger Racing Team | 4th |
| 4.9.1988 | Tourist Trophy | 17 | Sierra RS 500 | Bornebusch / Larsson | Bornebusch Racing | 17th |
| 4.9.1988 | Tourist Trophy | 20 | Sierra RS 500 | Simonsen / Simonsen | Team CMS Sweden | DNF |
| 4.9.1988 | Tourist Trophy | 21 | Sierra RS 500 | Goode / Newman / Lyall | Listerine/Texaco Racing | 27th |
| 4.9.1988 | Tourist Trophy | 33 | Sierra RS 500 | Rouse / Ferté | Kaliber Ford | 1st |
| 4.9.1988 | Tourist Trophy | 44 | Sierra RS 500 | Bristow / Gravett | Baynard Cars Ltd. | 9th |
| 4.9.1988 | Tourist Trophy | 45 | Sierra RS 500 | Brodie / Birley | Team Atari Cristal Brodie Brittain Racing | DNA |
| 4.9.1988 | Tourist Trophy | 48 | Sierra RS 500 | Chris Hodgetts | Brooklyn Motorsport | DNA |