Race Win Ratio

until 2009 Monaco 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	Brawn	41.67%	5	12
7	Howard Keck Co	40.00%	2	5
8	FISA / Scuderia Sant'Ambroeus	33.33%	1	3
9	Scuderia Ambrosiana	26.32%	5	19
10	Melchester Racing	25.00%	5	20
10	Leader Cards Inc	25.00%	1	4
12	Mercedes-Benz	23.81%	10	42
13	Moss	20.00%	4	20
	John Young	20.00%	1	5
	World Wide Racing/Garvey Team Lotus	20.00%	1	5
16	Emilio de Villota	17.65%	3	17
17	John Zink	16.67%	2	12
17	John Coombs	16.67%	1	6
19	Vanwall	16.05%	13	81
20	Gilby Engineering	13.51%	5	37
21	Ferrari	12.64%	221	1748
22	ADAC	12.50%	1	8
22	Murrell Belanger	12.50%	1	8
24	McLaren	12.07%	163	1350
25	Scuderia Lancia	11.11%	2	18
	Emmanuel de Graffenried	11.11%	1	9
	EMW	11.11%	1	9
28	J C Agajanian	10.00%	1	10
29	Williams	9.67%	113	1169
30	Maserati	8.41%	18	214
31	Renault	7.14%	35	490
32	Lotus	7.03%	74	1052
33	Bira	6.67%	1	15
33	Leslie Marr	6.67%	1	15
35	Cooper	6.35%	16	252
36	R.R.C. Walker Racing Team	5.99%	10	167
37	Benetton	5.19%	27	520
38	Gould's Garage	5.00%	2	40
39	Alfa Romeo	4.60%	11	239
40	Brabham	4.33%	36	832
41	Wolf	4.17%	3	72
42	John Goldie Racing	4.00%	1	25
43	BRM	3.50%	18	514
44	Tyrrell	3.50%	33	943
45	Bob Gerard	3.33%	1	30
46	Connaught Engineering	3.12%	2	64
47	Penske	3.03%	1	33
48	Eagle	2.86%	1	35
49	Porsche	2.50%	1	40
50	RAM	2.48%	3	121
51	Honda	1.99%	3	151
52	Equipe Gordini	1.66%	3	181
53	Ligier	1.44%	9	625
54	Theodore	1.25%	1	80
55	Ecurie Rosier	1.16%	1	86
56	Stewart	1.02%	1	98
57	Hesketh	0.97%	1	103
58	Shadow	0.85%	2	236
58	Toro Rosso	0.85%	1	118
60	BMW	0.83%	1	120
61	Jordan	0.80%	4	500
62	Red Bull	0.64%	1	156
63	March	0.42%	2	481

Finishing position: