Race Win Ratio

until 1961 Monaco 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	Engine Manufacturer	Race Win Ratio	Race Wins	Entries
1	EMW	50.00%	5	10
2	Mercury	33.33%	1	3
3	Kollektiv	25.00%	2	8
3	Meteor	25.00%	1	4
5	Mercedes	23.26%	10	43
6	Alfa Romeo	20.35%	35	172
7	Vanwall	14.44%	13	90
8	Ferrari	11.47%	95	828
9	Lancia	11.43%	4	35
10	Connaught	10.14%	14	138
11	BMW	7.65%	13	170
12	Simca-Gordini	7.19%	12	167
13	Climax	6.01%	46	766
14	Simca	5.88%	2	34
15	Maserati	5.65%	83	1468
16	Talbot-Lago	5.60%	19	339
17	Porsche	5.56%	2	36
18	ERA	5.29%	12	227
19	Cisitalia	5.13%	6	117
20	Lea-Francis	4.17%	5	120
21	Ford	3.85%	1	26
22	Gordini	3.45%	8	232
23	BRM	3.29%	5	152
24	Offenhauser	3.12%	11	352
25	Bristol	2.99%	9	301
26	OSCA	2.27%	1	44
27	Frazer-Nash	2.13%	1	47
28	MG	2.08%	1	48
29	Bugatti	1.82%	1	55
30	Alta	1.81%	7	387
31	Delahaye	1.53%	2	131
32	Veritas	1.15%	1	87

Finishing position: