Race Win Ratio

until 2008 Italian GP

Ignore Indy 500 races
Ignore non-championship races
Note: records involving non-championship races may be inaccurate due to incomplete data.

Finishing position:

Pos	Team	Race Win Ratio	Race Wins	Entries
1	Ken-Paul Inc	100.00%	1	1
2	BSG Motor	50.00%	2	4
	George Salih	50.00%	2	4
	John Riseley-Prichard	50.00%	2	4
	Kurtis Kraft Inc	50.00%	1	2
6	Howard Keck Co	40.00%	2	5
7	FISA / Scuderia Sant'Ambroeus	33.33%	1	3
8	Scuderia Ambrosiana	26.32%	5	19
9	Melchester Racing	25.00%	5	20
9	Leader Cards Inc	25.00%	1	4
11	Mercedes-Benz	23.81%	10	42
12	Moss	20.00%	4	20
	John Young	20.00%	1	5
	World Wide Racing/Garvey Team Lotus	20.00%	1	5
15	Emilio de Villota	17.65%	3	17
16	John Zink	16.67%	2	12
16	John Coombs	16.67%	1	6
18	Vanwall	16.05%	13	81
19	Gilby Engineering	13.51%	5	37
20	Ferrari	12.73%	220	1728
21	ADAC	12.50%	1	8
21	Murrell Belanger	12.50%	1	8
23	McLaren	12.18%	162	1330
24	Scuderia Lancia	11.11%	2	18
	Emmanuel de Graffenried	11.11%	1	9
	EMW	11.11%	1	9
27	J C Agajanian	10.00%	1	10
28	Williams	9.83%	113	1149
29	Maserati	8.41%	18	214
30	Lotus	7.03%	74	1052
31	Renault	7.02%	33	470
32	Bira	6.67%	1	15
32	Leslie Marr	6.67%	1	15
34	Cooper	6.35%	16	252
35	R.R.C. Walker Racing Team	5.99%	10	167
36	Benetton	5.19%	27	520
37	Gould's Garage	5.00%	2	40
38	Alfa Romeo	4.60%	11	239
39	Brabham	4.33%	36	832
40	Wolf	4.17%	3	72
41	John Goldie Racing	4.00%	1	25
42	BRM	3.50%	18	514
43	Tyrrell	3.50%	33	943
44	Bob Gerard	3.33%	1	30
45	Connaught Engineering	3.12%	2	64
46	Penske	3.03%	1	33
47	Eagle	2.86%	1	35
48	Porsche	2.50%	1	40
49	RAM	2.48%	3	121
50	Honda	2.10%	3	143
51	Equipe Gordini	1.66%	3	181
52	Ligier	1.44%	9	625
53	Theodore	1.25%	1	80
54	Ecurie Rosier	1.16%	1	86
55	Stewart	1.02%	1	98
55	Toro Rosso	1.02%	1	98
57	BMW	1.00%	1	100
58	Hesketh	0.97%	1	103
59	Shadow	0.85%	2	236
60	Jordan	0.80%	4	500
61	March	0.42%	2	481

Finishing position: