Race Win Ratio

until 1956 BRSCC Race

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	Watson	20.00%	1	5
8	Ferrari	12.39%	81	654
9	Lancia	12.12%	4	33
10	Vanwall	8.57%	3	35
11	BMW	7.87%	7	89
12	Connaught	6.80%	20	294
13	Simca-Gordini	6.74%	12	178
14	Simca	6.45%	2	31
15	Maserati	6.45%	74	1148
16	ERA	5.24%	12	229
17	Cisitalia	5.08%	6	118
18	Kuzma	5.00%	1	20
19	Ford	4.76%	1	21
20	Talbot-Lago	4.56%	19	417
21	Lotus	4.55%	2	44
22	AFM	4.35%	2	46
23	Cooper	4.10%	17	415
24	Gordini	3.69%	8	217
25	Kurtis Kraft	3.68%	5	136
26	BRM	3.33%	1	30
27	OSCA	3.23%	1	31
28	MG	2.44%	1	41
29	Veritas	2.25%	2	89
30	Frazer-Nash	1.85%	1	54
31	Bugatti	1.79%	1	56
32	Delahaye	1.53%	2	131
33	HWM	1.14%	2	176

Finishing position: