Race Win Ratio

until 2010 Turkish GP

Include 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	Brawn	23.53%	8	34
7	Mercedes	17.54%	10	57
8	Ralt	16.67%	2	12
9	Vanwall	14.61%	13	89
10	Ferrari	12.41%	291	2344
11	Lancia	12.12%	4	33
12	Williams	10.50%	117	1114
13	McLaren	10.32%	186	1802
14	Alfa Romeo	10.26%	35	341
15	Matra	9.63%	13	135
16	Lotus	7.63%	178	2334
17	Simca-Gordini	6.74%	12	178
18	Lyncar	6.67%	1	15
19	Renault	6.65%	35	526
20	Connaught	6.50%	21	323
21	Simca	6.45%	2	31
22	Maserati	5.90%	82	1390
23	Wolf	5.36%	3	56
24	Eagle	5.26%	2	38
25	ERA	5.24%	12	229
26	Benetton	5.19%	27	520
27	Cisitalia	5.08%	6	118
28	Brabham	4.96%	69	1391
29	Ford	4.76%	1	21
30	Red Bull	4.69%	9	192
31	Talbot-Lago	4.52%	19	420
32	AFM	4.26%	2	47
33	Cooper	4.18%	66	1579
34	BRM	3.76%	30	797
35	Gordini	3.60%	8	222
36	BMW	3.49%	8	229
37	Penske	3.39%	2	59
38	Tyrrell	3.33%	31	930
39	BRP	3.23%	1	31
40	Porsche	3.18%	5	157
41	OSCA	2.78%	1	36
42	Veritas	2.25%	2	89
43	MG	2.17%	1	46
44	LDS	2.00%	3	150
45	Honda	1.95%	3	154
46	Hesketh	1.85%	2	108
46	Frazer-Nash	1.85%	1	54
48	March	1.85%	14	757
49	Bugatti	1.79%	1	56
50	Surtees	1.64%	8	488
51	Delahaye	1.53%	2	131
52	Ligier	1.46%	9	615
52	Lola	1.46%	9	615
54	HWM	1.12%	2	179
55	Stewart	1.02%	1	98
56	Jordan	0.80%	4	500
57	Shadow	0.76%	2	262
58	Chevron	0.66%	1	152
59	Toro Rosso	0.65%	1	154

Finishing position: