| 1994 · 1994 24 Hours of Le Mans | DNA | 16 | IMSA-WSC | Pegasus Racing | Jim Downing · Dieter QuesterOliver Kuttner Jim Downing Mike Sheehan Dieter Quester | Argo JM19 C | BMW M88 3.5L S6 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1986 · 1986 24 Hours of Le Mans | DNF | 62 | Gr.C1 | Kouros Racing | Henri Pescarolo · Christian Danner · Dieter QuesterHenri Pescarolo Christian Danner Dieter Quester | Sauber C8 | Mercedes-Benz M117 5.0L V8 twin turbo | 86 | Wikipedia contributors · CC BY-SA 4.0 |
| 1985 · 1985 24 Hours of Le Mans | DNS | 61 | Gr.C1 | Sauber Racing | John Nielsen · Dieter Quester · Max WeltiJohn Nielsen Dieter Quester Max Welti | Sauber C8 | Mercedes-Benz M117 5.0L V8 turbo | | Wikipedia contributors · CC BY-SA 4.0 |
| 1985 · Fuji 1000 Kilometres | entry_only | 61 | C1 | Sauber | John Nielsen · Dieter Quester · Max Welti | Sauber C8 Mercedes | — | | WSPR historical record |
| 1984 · Trofeo Filippo Caracciolo, Monza | not_classified | 68 | C2 | BF Goodrich | Boy Hayje · Dieter Quester | Lola T616 Mazda | — | 116 | WSPR historical record |
| 1984 · ADAC 1000 Kilometres, Nürburgring | retired | 68 | C2 | The B.F. Goodrich Co. | Dieter Quester · Rick Knoop | Lola T616 Mazda | — | 53 | WSPR historical record |
| 1984 · Mount Fuji 1000 Kilometres | 11 | 68 | 3. C2 | BF Goodrich | Dieter Quester · Rick Knoop | Lola T616 Mazda | — | 198 | WSPR historical record |
| 1983 · 1983 24 Hours of Le Mans | DNF | 11 | Gr.C | John Fitzpatrick Racing | John Fitzpatrick · David Hobbs · Dieter QuesterJohn Fitzpatrick David Hobbs Dieter Quester | Porsche 956 | Porsche 935/79 2.6L F6 twin turbo | 135 | Wikipedia contributors · CC BY-SA 4.0 |
| 1982 · 1982 24 Hours of Le Mans | DNF | 20 | Gr.C | BASF Cassetten Team GS Sport | Hans-Joachim Stuck · Jean-Louis Schlesser · Dieter QuesterHans-Joachim Stuck Jean-Louis Schlesser Dieter Quester | Sauber SHS C6 | Cosworth DFL 4.0L V8 | 76 | Wikipedia contributors · CC BY-SA 4.0 |
| 1982 · The Pace Petroleum 6 Hours, Silverstone | entry_only | 41 | C | URD Team | Rolf Stommelen · Dieter Quester · Jürgen Hamelmann · Harald Grohs | URD C81 BMW | — | | WSPR historical record |
| 1982 · Trofeo Banca Toscana 1000 kilometres, Mugello | entry_only | 23 | C | Jürgen Kanacher | Dieter Quester · Anton Fischhaber · Jürgen Hamelmann | URD C81 BMW | — | | WSPR historical record |
| 1981 · 1981 24 Hours of Le Mans | DNF | 52 | Gr.5 SP +2.0 | Würth -Lubrifilm Team Sauber | Dieter Quester · Marc SurerDieter Quester Marc Surer David Deacon | BMW M1 | BMW M88 3.5L S6 | 207 | Wikipedia contributors · CC BY-SA 4.0 |
| 1981 · 20th Annual 24 Hour Pepsi Challenge Camel GT race, Daytona Internati onal Speedway | 16 | 2 | 6. GTX | BMW North America | David Hobbs · Marc Surer · Dieter Quester | BMW M1 | — | 555 | WSPR historical record |
| 1981 · 1000 km Monza | 4 | 16 | 2. Gr.5 | ORECA | Teo Fabi · Dieter Quester | BMW M1 Gr.5 | — | 170 | WSPR historical record |
| 1981 · Silverstone 6 Hours | entry_only | 19 | Gr.5 | Sauber Racing | Marc Surer · Dieter Quester | BMW M1 | — | | WSPR historical record |
| 1981 · 1000 km Nürburgring | 13 | 14 | 9. Gr.5 | Sauber AG | Marc Surer · Dieter Quester | BMW M1 (Sauber) | — | 15 | WSPR historical record |
| 1980 · 1980 24 Hours of Le Mans | 14 | 83 | IMSA | BMW -France | Dieter Quester · Didier Pironi · Marcel MignotDieter Quester Didier Pironi Marcel Mignot | BMW M1 | BMW M88 3.5L S6 | 294 | Wikipedia contributors · CC BY-SA 4.0 |
| 1980 · Mugello 6 Hours | 6 | 43 | 1. S+2.0 | BMW France | Dieter Quester · Didier Pironi | BMW M1 | — | 167 | WSPR historical record |
| 1979 · 1979 24 Hours of Le Mans | DNA | 16 | Gr.6 S 5.0 | March Racing | Dieter Quester · Guy Edwards · Ian GrobDieter Quester Guy Edwards Ian Grob | March-BMW M1 | BMW M88 3.5L S6 | | Wikipedia contributors · CC BY-SA 4.0 |
| 1978 · 1978 24 Hours of Le Mans | DNF | 34 | Gr.6 S 2.0 | BMW (GB) Racing Toleman Delivery | Dieter Quester · Tom Walkinshaw · Rad DougallDieter Quester Tom Walkinshaw Rad Dougall | Osella PA6 | BMW M12 2.0L S4 | 113 | Wikipedia contributors · CC BY-SA 4.0 |
| 1978 · 6 h Mugello | 3 | 31 | 3. Gr.5 | Faltz Preparation | Dieter Quester · Derek Bell | BMW 320i | — | 174 | WSPR historical record |
| 1978 · 6 h Dijon | retired | 25 | Gr.5 | Faltz Preparation | Dieter Quester · Tom Walkinshaw | BMW 320i | — | 81 | WSPR historical record |
| 1978 · 6 h Silverstone | did_not_start | 52 | Gr.5 | Faltz Preparation | Dieter Quester · Tom Walkinshaw | BMW 320i | — | | WSPR historical record |
| 1978 · 1000 km Nürburgring | 7 | 29 | 7. Gr.5 | Faltz/BMW Motorsport GmbH | Ronnie Peterson · Dieter Quester · DNS - Markus Höttinger | BMW 320i | — | 43 | WSPR historical record |
| 1978 · Misano 6 Hours | 5 | 1 | 5. Gr.5 | Faltz BMW | Dieter Quester · Wolfgang Wolf | BMW 320i | — | 246 | WSPR historical record |
| 1978 · Watkins Glen 6 Hours/Trans-Am Championship, Watkins Glen Grand Prix C ircuit | 3 | 10 | 3. Gr.5 | BMW Faltz Essen | Hans-Joachim Stuck · Dieter Quester | BMW 320i | — | 138 | WSPR historical record |
| 1978 · 6 h Vallelunga | retired | 33 | Gr.5 | BMW Faltz | Dieter Quester · Markus Höttinger | BMW 320i | — | 155 | WSPR historical record |
| 1977 · 500 kms de I'ACF, Dijon-Prenois | 10 | 22 | S2.0 | Enzo Osella | Giorgio Francia · Dieter Quester | Osella PA5 BMW | — | 92 | WSPR historical record |
| 1977 · 500 km Paul Ricard, Le Castellet | retired | 34T | S2.0 | Osella Squadra Corse | Dieter Quester · Diulio Truffo | Osella PA5 BMW | — | 67 | WSPR historical record |
| 1977 · 500 km Paul Ricard, Le Castellet | source_section_running_in_practice | 34 | S2.0 | Osella Squadra Corse | Dieter Quester · Diulio Truffo | Osella PA5 BMW | — | | WSPR historical record |
| 1976 · 1976 24 Hours of Le Mans | DNF | 43 | Gp.5 SP | BMW Motorsport GmbH Schnitzer Motorsport | Dieter QuesterDieter Quester Albrecht Krebs Alain Peltier | BMW 3.0 CSL | BMW 3.5L S6 | 117 | Wikipedia contributors · CC BY-SA 4.0 |
| 1976 · March Trophy, Mugello 6 Hours | retired | 1 | Gr.5 | Schnitzer | Dieter Quester · Albrecht Krebs · Brian Redman | BMW 3.5 CSL | — | 169 | WSPR historical record |
| 1976 · Elan Trophy, Salzburgring | 3 | - | 1. S2.0 | — | Dieter Quester | Osella PA4 BMW | — | 65 | WSPR historical record |
| 1976 · Elan Trophy, Salzburgring | entry_only | 10 | S3.0 | Egon Evertz | Dieter Quester | Porsche 908/3 | — | | WSPR historical record |
| 1976 · Trofeo Ignazio Giunti, Vallelunga 6 Hours | retired | 2 | Gr.5 | Schnitzer | Dieter Quester · Albrecht Krebs | BMW 3.5 CSL | — | 169 | WSPR historical record |
| 1976 · World Championship of Maker, 6 Hours of Silverstone | retired | 2 | Gr.5 | Schnitzer | Dieter Quester · Albrecht Krebs | BMW 3.5 CSL | — | 160 | WSPR historical record |
| 1976 · ADAC 1000 Kilometres, Nürburgring | 1 | 7 | 1. Gr.5 | Schnitzer | Albrecht Krebs · Dieter Quester | BMW 3.5 CSL | — | 47 | WSPR historical record |
| 1976 · Martha 1000, Zeltweg 6 Hours, Österreichring | 1 | 12 | 1. Gr.5 | Schnitzer BMW | Dieter Quester · Gunnar Nilsson | BMW 3.5 CSL | — | 187 | WSPR historical record |
| 1976 · 6 Hours of Watkins Glen World Championship of Makes and SCCA Trans-Am Championship | 5 | 10 | 5. Gr.5 | Schnitzer | Ronnie Peterson · Dieter Quester | BMW 3.5 CSL | — | 166 | WSPR historical record |
| 1976 · ACF 6 Hours Dijon | 6 | 27 | 6. Gr.5 | Schnitzer BMW | Dieter Quester · Albrecht Krebs · Ronnie Peterson | BMW 3.5 CSL | — | 297 | WSPR historical record |
| 1973 · 1973 24 Hours of Le Mans | 11 | 51 | TS 5.0 | BMW Motorsport | Toine Hezemans · Dieter QuesterToine Hezemans Dieter Quester | BMW 3.0 CSL | BMW 3.3L S6 | 307 | Wikipedia contributors · CC BY-SA 4.0 |
| 1973 · Monza 1000 Kilometres | entry_only | 29 | S2.0 | Trivellato | Toine Hezemans · Dieter Quester | March 73S BMW | — | | WSPR historical record |
| 1973 · ADAC 1000 Kilometres, Nürburgring | 9 | 69 | 1. T+3.0 | BMW Motorsport GmbH | Toine Hezemans · Dieter Quester | BMW 3.0 CSL | — | 38 | WSPR historical record |
| 1972 · Buenos Aires 1000 Kilometres | retired | 24 | S2.0 | Abarth-Osella | Dieter Quester · Alex Soler-Roig | Abarth SE021 | — | 60 | WSPR historical record |
| 1969 · Austrian GP, 1000 km Zeltweg | retired | 32 | S5.0 | David Piper Racing | David Piper · Dieter Quester | Lola T70 Mk.3B Che | — | | WSPR historical record |
| 1969 · ADAC 1000 kilometres Nürburgring | did_not_start | 44 | P1.6 | Abarth-Osella | Toine Hezemans · Erich Bitter · Dieter Quester | Abarth 1300SP | — | | WSPR historical record |
| 1967 · Ollon-Villars, Swiss Mountain Grand Prix | 3 | 199 | 3. P2.0 | BMW | Dieter Quester | Lola T110 BMW | — | 2 | WSPR historical record |