Race Win Ratio

until 1976 Spanish 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	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	14.14%	27	191
10	Watson	13.64%	3	22
11	Lancia	12.12%	4	33
12	Epperly	11.76%	2	17
13	Ferrari	11.36%	140	1232
14	Matra	9.63%	13	135
15	Lotus	9.22%	156	1692
16	BMW	7.87%	7	89
17	Simca-Gordini	6.74%	12	178
18	Connaught	6.50%	21	323
19	Simca	6.45%	2	31
20	Maserati	5.89%	82	1393
21	Brabham	5.80%	51	880
22	Eagle	5.26%	2	38
23	ERA	5.24%	12	229
24	McLaren	5.10%	32	627
25	Cisitalia	5.08%	6	118
26	Ford	4.76%	1	21
27	Talbot-Lago	4.52%	19	420
28	AFM	4.26%	2	47
29	Cooper	4.18%	66	1579
30	Honda	4.17%	2	48
31	Hesketh	3.92%	2	51
32	BRM	3.82%	30	786
33	Gordini	3.60%	8	222
34	BRP	3.23%	1	31
35	Porsche	3.18%	5	157
36	OSCA	2.78%	1	36
37	Kuzma	2.70%	1	37
38	Lola	2.63%	9	342
39	Kurtis Kraft	2.58%	5	194
40	Veritas	2.25%	2	89
41	March	2.20%	9	410
42	MG	2.17%	1	46
43	LDS	2.00%	3	150
44	Frazer-Nash	1.85%	1	54
45	Bugatti	1.79%	1	56
46	Delahaye	1.53%	2	131
47	HWM	1.12%	2	179
48	Chevron	0.88%	1	113
49	Surtees	0.86%	3	347
50	Shadow	0.86%	1	116

Finishing position: