Race Win Ratio

until 1977 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	Mercedes	23.26%	10	43
7	Alfa Romeo	23.03%	35	152
8	Ralt	16.67%	2	12
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	11.71%	157	1341
14	Matra	9.63%	13	135
15	Lotus	9.28%	170	1831
16	Tyrrell	9.24%	29	314
17	BMW	7.87%	7	89
18	Simca-Gordini	6.74%	12	178
19	Lyncar	6.67%	1	15
20	Connaught	6.50%	21	323
21	Simca	6.45%	2	31
22	Wolf	6.00%	3	50
23	Maserati	5.89%	82	1393
24	Ligier	5.71%	4	70
25	McLaren	5.44%	43	790
26	Eagle	5.26%	2	38
27	ERA	5.24%	12	229
28	Brabham	5.23%	53	1013
29	Cisitalia	5.08%	6	118
30	Ford	4.76%	1	21
31	Talbot-Lago	4.52%	19	420
32	AFM	4.26%	2	47
33	Cooper	4.18%	66	1579
34	Honda	4.17%	2	48
35	BRM	3.76%	30	797
36	Gordini	3.60%	8	222
37	Penske	3.39%	2	59
38	Williams	3.37%	3	89
39	BRP	3.23%	1	31
40	Porsche	3.18%	5	157
41	OSCA	2.78%	1	36
42	Kuzma	2.70%	1	37
43	Kurtis Kraft	2.58%	5	194
44	Renault	2.56%	1	39
45	March	2.39%	14	586
46	Veritas	2.25%	2	89
47	Lola	2.23%	9	403
48	MG	2.17%	1	46
49	LDS	2.00%	3	150
50	Hesketh	1.85%	2	108
50	Frazer-Nash	1.85%	1	54
52	Bugatti	1.79%	1	56
53	Surtees	1.64%	8	488
54	Delahaye	1.53%	2	131
55	HWM	1.12%	2	179
56	Shadow	0.85%	2	234
57	Chevron	0.66%	1	152

Finishing position: