Race Win Ratio

until 1973 Brazilian 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	17.19%	11	64
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	11.01%	126	1144
14	Matra	9.63%	13	135
15	Lotus	8.85%	133	1503
16	BMW	7.87%	7	89
17	Simca-Gordini	6.74%	12	178
18	Brabham	6.56%	46	701
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	Talbot-Lago	4.52%	19	420
27	BRM	4.40%	30	682
28	AFM	4.26%	2	47
29	Cooper	4.18%	66	1579
30	Honda	4.17%	2	48
31	Gordini	3.60%	8	222
32	Lola	3.45%	9	261
33	BRP	3.23%	1	31
34	Porsche	3.18%	5	157
35	OSCA	2.78%	1	36
36	March	2.72%	7	257
37	Kuzma	2.70%	1	37
38	Kurtis Kraft	2.58%	5	194
39	McLaren	2.48%	10	404
40	Veritas	2.25%	2	89
41	MG	2.17%	1	46
42	LDS	2.00%	3	150
43	Frazer-Nash	1.85%	1	54
44	Bugatti	1.79%	1	56
45	Surtees	1.64%	3	183
46	Delahaye	1.53%	2	131
47	HWM	1.12%	2	179

Finishing position: