Race Win Ratio

until 1977 Monaco 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
	Mercury	50.00%	1	2
	Ralt	50.00%	1	2
4	EMW	33.33%	7	21
5	IFA	25.00%	2	8
5	Reif	25.00%	2	8
7	Alfa Romeo	23.33%	35	150
8	Mercedes	23.26%	10	43
9	Wolf	15.38%	2	13
10	Vanwall	14.61%	13	89
11	Watson	13.64%	3	22
12	Lancia	12.12%	4	33
13	Epperly	11.76%	2	17
14	Tyrrell	11.65%	29	249
15	Ferrari	11.50%	147	1278
16	Matra	9.63%	13	135
17	Lotus	9.27%	162	1748
18	Lyncar	9.09%	1	11
19	BMW	7.87%	7	89
20	Simca-Gordini	6.74%	12	178
21	Connaught	6.50%	21	323
22	Simca	6.45%	2	31
23	Maserati	5.89%	82	1393
24	McLaren	5.52%	38	688
25	Brabham	5.40%	51	944
26	Eagle	5.26%	2	38
27	ERA	5.24%	12	229
28	Cisitalia	5.08%	6	118
29	Penske	5.00%	2	40
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	3.80%	30	790
36	Gordini	3.60%	8	222
37	BRP	3.23%	1	31
38	Porsche	3.18%	5	157
39	OSCA	2.78%	1	36
40	Kuzma	2.70%	1	37
41	Kurtis Kraft	2.58%	5	194
42	Lola	2.48%	9	363
43	March	2.40%	12	501
44	Hesketh	2.38%	2	84
45	Veritas	2.25%	2	89
46	MG	2.17%	1	46
47	LDS	2.00%	3	150
47	Williams	2.00%	1	50
49	Frazer-Nash	1.85%	1	54
50	Bugatti	1.79%	1	56
51	Delahaye	1.53%	2	131
52	HWM	1.12%	2	179
53	Chevron	0.79%	1	126
54	Surtees	0.72%	3	417
55	Shadow	0.59%	1	170

Finishing position: