Race Win Ratio

until 1976 Japanese 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	Watson	13.64%	3	22
10	Tyrrell	12.56%	28	223
11	Lancia	12.12%	4	33
12	Epperly	11.76%	2	17
13	Ferrari	11.40%	143	1254
14	Matra	9.63%	13	135
15	Lotus	9.15%	157	1715
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	McLaren	5.68%	37	651
22	Brabham	5.56%	51	917
23	Eagle	5.26%	2	38
24	ERA	5.24%	12	229
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	BRM	3.82%	30	786
32	Gordini	3.60%	8	222
33	BRP	3.23%	1	31
34	Porsche	3.18%	5	157
35	Penske	3.12%	1	32
36	Hesketh	2.82%	2	71
37	OSCA	2.78%	1	36
38	Kuzma	2.70%	1	37
39	Lola	2.63%	9	342
40	Kurtis Kraft	2.58%	5	194
41	Veritas	2.25%	2	89
42	March	2.21%	10	452
43	MG	2.17%	1	46
44	LDS	2.00%	3	150
45	Frazer-Nash	1.85%	1	54
46	Bugatti	1.79%	1	56
47	Delahaye	1.53%	2	131
48	HWM	1.12%	2	179
49	Chevron	0.88%	1	113
50	Surtees	0.79%	3	380
51	Shadow	0.71%	1	141

Finishing position: