Race Win Ratio

until 1963 British 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	Alfa Romeo	23.33%	35	150
7	Mercedes	23.26%	10	43
8	Vanwall	14.61%	13	89
9	Lancia	12.12%	4	33
10	Ferrari	11.53%	103	893
11	BMW	7.87%	7	89
12	Simca-Gordini	6.74%	12	178
13	Connaught	6.50%	21	323
14	Simca	6.45%	2	31
15	Lotus	6.39%	47	735
16	BRM	6.05%	15	248
17	Maserati	5.90%	82	1390
18	ERA	5.24%	12	229
19	Cisitalia	5.08%	6	118
20	Ford	4.76%	1	21
21	Talbot-Lago	4.52%	19	420
22	Cooper	4.32%	54	1250
23	AFM	4.26%	2	47
24	Porsche	3.62%	5	138
25	Gordini	3.60%	8	222
26	Lola	3.45%	2	58
27	OSCA	2.78%	1	36
28	Veritas	2.25%	2	89
29	MG	2.17%	1	46
30	Frazer-Nash	1.85%	1	54
31	Bugatti	1.79%	1	56
32	Delahaye	1.53%	2	131
33	HWM	1.12%	2	179

Finishing position: