Race Win Ratio

until 1977 Brazilian GP

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

Finishing position:

Pos	Car Manufacturer	Race Win Ratio	Race Wins	Entries
1	Ferguson	50.00%	1	2
	Mercury	50.00%	1	2
	Wolf	50.00%	1	2
4	EMW	33.33%	7	21
5	IFA	25.00%	2	8
5	Reif	25.00%	2	8
7	Alfa Romeo	23.33%	35	150
8	Mercedes	23.26%	10	43
9	Vanwall	14.61%	13	89
10	Tyrrell	12.33%	28	227
11	Lancia	12.12%	4	33
12	Ferrari	11.46%	144	1257
13	Matra	9.63%	13	135
14	Lotus	9.13%	157	1719
15	BMW	7.87%	7	89
16	Simca-Gordini	6.74%	12	178
17	Connaught	6.50%	21	323
18	Simca	6.45%	2	31
19	Maserati	5.90%	82	1390
20	McLaren	5.64%	37	656
21	Brabham	5.53%	51	922
22	Eagle	5.26%	2	38
23	ERA	5.24%	12	229
24	Cisitalia	5.08%	6	118
25	Ford	4.76%	1	21
26	Talbot-Lago	4.52%	19	420
27	AFM	4.26%	2	47
28	Cooper	4.18%	66	1579
29	Honda	4.17%	2	48
30	BRM	3.81%	30	787
31	Gordini	3.60%	8	222
32	BRP	3.23%	1	31
33	Porsche	3.18%	5	157
34	Penske	3.03%	1	33
35	Hesketh	2.82%	2	71
36	OSCA	2.78%	1	36
37	Williams	2.63%	1	38
38	Lola	2.60%	9	346
39	Veritas	2.25%	2	89
40	MG	2.17%	1	46
41	March	2.16%	10	462
42	LDS	2.00%	3	150
43	Frazer-Nash	1.85%	1	54
44	Bugatti	1.79%	1	56
45	Delahaye	1.53%	2	131
46	HWM	1.12%	2	179
47	Chevron	0.87%	1	115
48	Surtees	0.78%	3	386
49	Shadow	0.68%	1	146

Finishing position: