Race Win Ratio

until 2010 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	Brawn	23.53%	8	34
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	Mercedes-Benz	14.29%	10	70
20	Gilby Engineering	13.51%	5	37
21	Ferrari	12.51%	225	1798
22	ADAC	12.50%	1	8
22	Murrell Belanger	12.50%	1	8
24	McLaren	12.14%	170	1400
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	9.27%	113	1219
30	Maserati	8.41%	18	214
31	Lotus	6.85%	74	1080
32	Bira	6.67%	1	15
32	Leslie Marr	6.67%	1	15
34	Renault	6.48%	35	540
35	Cooper	6.35%	16	252
36	R.R.C. Walker Racing Team	5.99%	10	167
37	Red Bull	5.83%	12	206
38	Benetton	5.19%	27	520
39	Gould's Garage	5.00%	2	40
40	Alfa Romeo	4.60%	11	239
41	Brabham	4.33%	36	832
42	Wolf	4.17%	3	72
43	John Goldie Racing	4.00%	1	25
44	BRM	3.50%	18	514
45	Tyrrell	3.50%	33	943
46	Bob Gerard	3.33%	1	30
47	Connaught Engineering	3.12%	2	64
48	Penske	3.03%	1	33
49	Eagle	2.86%	1	35
50	Porsche	2.50%	1	40
51	RAM	2.48%	3	121
52	Honda	1.99%	3	151
53	Equipe Gordini	1.66%	3	181
54	Ligier	1.44%	9	625
55	Theodore	1.25%	1	80
56	Ecurie Rosier	1.16%	1	86
57	Stewart	1.02%	1	98
58	Hesketh	0.97%	1	103
59	Shadow	0.85%	2	236
60	Jordan	0.80%	4	500
61	Toro Rosso	0.60%	1	168
62	BMW	0.59%	1	170
63	March	0.42%	2	481

Finishing position: