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The SAT 1 Supercup '89 was the fourth and final season of the Supercup, a West German auto racing series organized by the ADAC and sponsored by SAT 1 television. Held over five events in West Germany and Great Britain, the driver's championship was won by Frenchmen Bob Wollek; his team Joest Racing won the team's championship. The series was canceled following the 1989 season, ending a yearly series of German sports car championships dating back to 1972.

Team	Car	Engine	Tyre	No.	Driver	Rounds
Blaupunkt Sachs Joest Racing	Porsche 962C	Porsche 3.0 L Turbo Flat-6	G	1	Bob Wollek	All
				2	"John Winter"	All
				10	Jean-Louis Ricci	1–3
				11	Frank Jelinski	3
Jägermeister Brun Motorsport	Porsche 962C	Porsche 3.0 L Turbo Flat-6	Y	3	Walter Brun	1, 3–5
				4	Oscar Larrauri	3, 5
					Franz Konrad	4
Dauer Racing	Porsche 962C	Porsche 3.0 L Turbo Flat-6	G	5	Jochen Dauer	All
Jim Busby/Dauer Racing	Porsche 962C	Porsche 3.0 L Turbo Flat-6	BF	6	John Andretti	3
Jumbo Racing Team	Porsche 962C	Porsche 3.0 L Turbo Flat-6	G	7	Heinz-Jörgen Dahman	1, 3–5
Swiss Team Salamin	Porsche 962C	Porsche 3.0 L Turbo Flat-6	G	8	Antoine Salamin	1–3, 5
Walter Lechner Racing School	Porsche 962C	Porsche 3.0 L Turbo Flat-6	D	9	Walter Lechner	All
Porsche Kremer Racing	Porsche 962CK6	Porsche 3.0 L Turbo Flat-6	Y	12	George Fouché	4–5
Richard Lloyd Racing	Porsche 962C GTi	Porsche 3.0 L Turbo Flat-6	G	14	Tiff Needell	2
Bernal Torentriebe Team Gebhardt	Gebhardt 88 C2	Audi 1.8 L Turbo I4	G	15	Rudi Seher	4–5
John Salmona	Cheetah G604	Aston Martin 5.3 L V8	G	20	John Salmona	1, 3, 5
Spice Engineering	Spice SE89C	Ford Cosworth DFZ 3.5 L V8	G	22	Costas Los	2
Nissan Motor Sports Europe	Nissan R89C	Nissan VRH35Z 3.5 L Turbo V8	D	23	Martin Donnelly	4
					Julian Bailey	5
Momo Gebhardt Racing	Porsche 962	Porsche 3.0 L Turbo Flat-6	G	30	Gianpiero Moretti	1, 3
					Franz Konrad	5
Team Davey	Porsche 962C	Porsche 3.0 L Turbo Flat-6	D	31	Tim Lee-Davey	2

Team	Car	Engine	Tyre	No.	Driver	Rounds
GP Motorsport	Spice SE87C	Ford Cosworth DFL 3.3 L V8	G	51	Philippe de Henning	All
Karl-Heinz Becker	Lola T600	BMW 1.7 L Turbo I4	G	52	Karl-Heinz Becker	All
Pero Racing	Argo JM19	Porsche 3.0 L Turbo Flat-6	G	53	Helmut Gall	2–5
Bernal Torentriebe Team Gebhardt	Gebhardt JC873 Gebhardt 88 C2	Audi 1.8 L Turbo I4	G	54	Rudi Seher	1–3
Automobiles Louis Descartes	ALD 04	BMW M88 3.5 L I6	G	55	Marc Rostan	5
	ALD C289	Ford Cosworth DFL 3.3 L V8		56	Louis Descartes	5
R. Jauslin Cars	Argo JM19B	Ford Cosworth DFL 3.3 L V8	G	57	Ruedi Jauslin	1, 3–5
Fritz Wagner	Wagner FW0013	BMW 3.0 L I6	G	58	Fritz Wagner	1, 3–5
Walter Maurer	Maurer C87	BMW 2.0 L Turbo I4	D	60	Walter Maurer	1, 3–5
France Prototeam	Argo JM19C	Ford Cosworth DFL 3.3 L V8	G	61	Thierry Lecerf	1–2
	Spice SE88C			62	Pierre-François Rousselot	1
Style Auto Racing Team	Rieger CJ 84	Porsche 3.0 L Turbo Flat-6	G	63	Michael Roger Nuemann	5
ADA Engineering	ADA 02	Ford Cosworth DFL 3.3 L V8	G	64	Paul Stott	2
John Bartlett	Harrier LR7	Chevrolet 5.7 L V8	A	65	John Bartlett	2
Ecurie Ecosse	Ecosse C285	Ford Cosworth DFL 3.3 L V8	G	65	Laurence Jacobson	5
Chamberlain Engineering	Spice SE89C	Ford Cosworth DFL 3.3 L V8	G	66	Nick Adams	2
Team Istel	Spice SE89C	Ford Cosworth DFL 3.3 L V8	A	67	Tim Harvey	2
Dieter Bergermann	Argo JM19C	Ford Cosworth DFL 3.3 L V8		69	Dieter Bergermann	5
Roy Baker Racing	Tiga GC289	Ford Cosworth DFL 3.3 L V8	G	70	Dudley Wood	3
					Chris Ashmore	5
Peter Stürtz Motorsport	Stürtz SM C288	BMW Turbo	D	71	Harold Grohs	3–5
Bross Druck Chemie Racing	Argo JM19C	Ford Cosworth DFL 3.3 L V8	G	72	David Coyne	3
					Rolf Götz	4
					Cor Euser	5
Gordon Horn Racing	Argo JM19B	Zakspeed 1.9 L Turbo I4	G	73	Robin Smith	5

The series ventured outside West Germany for the first time, replacing the traditional Hockenheimring event with a race at the Silverstone Circuit in Great Britain. The Silverstone round allowed many competitors from the BRDC Sportscar Championship to compete alongside the Supercup. The other four events of the series remained in their calendar positions.

Rnd	Event	Circuit	Location	Date	C1 Winning Driver	C2 Winning Driver
					C1 Winning Team	C2 Winning Team
1	51st Internationales ADAC Eifelrennen	Nürburgring	Nürburg, West Germany	30 April	Bob Wollek	Pierre-François Rousselot
					Blaupunkt Sachs Joest Racing	France Prototeam
2	Autosport BRDC Supersprint	Silverstone Circuit	Northamptonshire, United Kingdom	15 May	Bob Wollek	Tim Harvey
					Blaupunkt Sachs Joest Racing	Team Istel
3	200 Meilen von Nürnberg	Norisring	Nuremberg, West Germany	25 June	Frank Jelinski	Philippe de Henning
					Joest Racing	GP Motorsport
4	22nd Internationales ADAC Flugplatzrennen	Diepholz Airfield Circuit	Diepholz, West Germany	6 August	Martin Donnelly	Ruedi Jauslin
					Nissan Motor Sports Europe	R. Jauslin Cars
5	Internationales ADAC Bilstein Super Sprint	Nürburgring	Nürburg, West Germany	24 September	Bob Wollek	Robin Smith
					Blaupunkt Sachs Joest Racing	Gordon Horn Racing