Race Win Ratio

until 1975 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
1	Mercury	50.00%	1	2
3	EMW	33.33%	7	21
4	IFA	25.00%	2	8
4	Reif	25.00%	2	8
6	Alfa Romeo	23.33%	35	150
7	Mercedes	23.26%	10	43
8	Vanwall	14.61%	13	89
9	Tyrrell	14.18%	20	141
10	Lancia	12.12%	4	33
11	Ferrari	10.80%	129	1194
12	Matra	9.63%	13	135
13	Lotus	9.53%	155	1626
14	BMW	7.87%	7	89
15	Simca-Gordini	6.74%	12	178
16	Connaught	6.50%	21	323
17	Simca	6.45%	2	31
18	Brabham	6.03%	50	829
19	Maserati	5.90%	82	1390
20	Hesketh	5.56%	1	18
21	Eagle	5.26%	2	38
22	ERA	5.24%	12	229
23	Cisitalia	5.08%	6	118
24	Ford	4.76%	1	21
25	Talbot-Lago	4.52%	19	420
26	McLaren	4.46%	25	561
27	AFM	4.26%	2	47
28	Cooper	4.18%	66	1579
29	Honda	4.17%	2	48
30	BRM	3.88%	30	774
31	Gordini	3.60%	8	222
32	BRP	3.23%	1	31
33	Porsche	3.18%	5	157
34	OSCA	2.78%	1	36
35	Lola	2.67%	9	337
36	Veritas	2.25%	2	89
37	March	2.23%	8	358
38	MG	2.17%	1	46
39	LDS	2.00%	3	150
40	Frazer-Nash	1.85%	1	54
41	Bugatti	1.79%	1	56
42	Delahaye	1.53%	2	131
43	HWM	1.12%	2	179
44	Chevron	1.06%	1	94
45	Surtees	0.96%	3	312

Finishing position: