Race Win Ratio

until 1960 ACF 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	Mercury	50.00%	1	2
2	EMW	33.33%	7	21
3	IFA	25.00%	2	8
3	Reif	25.00%	2	8
5	Alfa Romeo	23.33%	35	150
6	Mercedes	23.26%	10	43
7	Vanwall	14.61%	13	89
8	Watson	13.64%	3	22
9	Lancia	12.12%	4	33
10	Epperly	11.76%	2	17
11	Ferrari	11.40%	92	807
12	BMW	7.87%	7	89
13	Simca-Gordini	6.74%	12	178
14	Connaught	6.54%	21	321
15	Simca	6.45%	2	31
16	Maserati	5.93%	82	1383
17	ERA	5.24%	12	229
18	Cisitalia	5.08%	6	118
19	Cooper	4.99%	39	782
20	Ford	4.76%	1	21
21	Talbot-Lago	4.53%	19	419
22	AFM	4.26%	2	47
23	BRM	3.88%	5	129
24	Gordini	3.60%	8	222
25	Lotus	3.12%	5	160
26	OSCA	2.78%	1	36
27	Kuzma	2.70%	1	37
28	Kurtis Kraft	2.58%	5	194
29	Veritas	2.25%	2	89
30	MG	2.22%	1	45
31	Frazer-Nash	1.85%	1	54
32	Bugatti	1.79%	1	56
33	Delahaye	1.53%	2	131
34	HWM	1.12%	2	178

Finishing position: