Race Win Ratio

until 1972 South African 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	Tyrrell	21.62%	8	37
9	Vanwall	14.61%	13	89
10	Watson	13.64%	3	22
11	Lancia	12.12%	4	33
12	Epperly	11.76%	2	17
13	Ferrari	11.20%	125	1116
14	Matra	10.40%	13	125
15	BMW	7.87%	7	89
16	Lotus	7.81%	113	1446
17	Simca-Gordini	6.74%	12	178
18	Brabham	6.66%	43	646
19	Connaught	6.50%	21	323
20	Simca	6.45%	2	31
21	Maserati	5.89%	82	1393
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	BRM	4.55%	28	616
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	March	4.00%	7	175
32	Lola	3.98%	9	226
33	Gordini	3.60%	8	222
34	BRP	3.23%	1	31
35	Porsche	3.18%	5	157
36	McLaren	2.97%	9	303
37	OSCA	2.78%	1	36
38	Kuzma	2.70%	1	37
39	Kurtis Kraft	2.58%	5	194
40	Veritas	2.25%	2	89
41	MG	2.17%	1	46
42	Surtees	2.04%	2	98
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

Finishing position: