Race Win Ratio

until 1983 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	Mercedes	23.26%	10	43
7	Ralt	16.67%	2	12
8	Vanwall	14.61%	13	89
9	Alfa Romeo	14.06%	35	249
10	Watson	13.64%	3	22
11	Lancia	12.12%	4	33
12	Epperly	11.76%	2	17
13	Ferrari	11.39%	164	1440
14	Matra	9.63%	13	135
15	Williams	9.18%	19	207
16	Lotus	8.82%	171	1939
17	BMW	7.87%	7	89
18	Renault	7.86%	11	140
19	Tyrrell	7.06%	30	425
20	Simca-Gordini	6.74%	12	178
21	Lyncar	6.67%	1	15
22	Connaught	6.50%	21	323
23	Simca	6.45%	2	31
24	Maserati	5.89%	82	1393
25	Brabham	5.64%	63	1118
26	McLaren	5.36%	48	895
27	Wolf	5.36%	3	56
28	Eagle	5.26%	2	38
29	ERA	5.24%	12	229
30	Cisitalia	5.08%	6	118
31	Ford	4.76%	1	21
32	Ligier	4.65%	8	172
33	Talbot-Lago	4.52%	19	420
34	AFM	4.26%	2	47
35	Cooper	4.18%	66	1579
36	Honda	4.17%	2	48
37	BRM	3.76%	30	797
38	Gordini	3.60%	8	222
39	Penske	3.39%	2	59
40	BRP	3.23%	1	31
41	Porsche	3.18%	5	157
42	OSCA	2.78%	1	36
43	Kuzma	2.70%	1	37
44	Kurtis Kraft	2.58%	5	194
45	Veritas	2.25%	2	89
46	Lola	2.23%	9	403
47	March	2.17%	14	644
47	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	0.76%	2	262
57	Chevron	0.66%	1	152

Finishing position: