Race Win Ratio

until 1995 Hungarian 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	TAG	18.52%	25	135
6	Honda	16.10%	71	441
7	Vanwall	14.44%	13	90
8	Cosworth	13.33%	122	915
9	Lancia	11.43%	4	35
10	Mercedes	10.64%	10	94
11	Repco	10.50%	19	181
12	Connaught	10.14%	14	138
13	Ferrari	9.54%	185	1940
14	Renault	8.19%	67	818
15	Weslake	8.00%	2	25
16	Simca-Gordini	7.19%	12	167
17	Climax	6.19%	130	2100
18	Simca	5.88%	2	34
19	Talbot-Lago	5.60%	19	339
20	ERA	5.29%	12	227
21	Cisitalia	5.13%	6	117
22	Maserati	5.13%	85	1658
23	Alfa Romeo	4.83%	38	786
24	BMW	4.25%	22	518
25	Lea-Francis	4.17%	5	120
26	Gordini	3.45%	8	232
27	BRM	3.34%	38	1139
28	Offenhauser	3.12%	11	352
29	Bristol	2.97%	9	303
30	Ford	2.79%	182	6534
31	Porsche	2.70%	5	185
32	Lotus	2.30%	2	87
33	Frazer-Nash	2.13%	1	47
34	MG	2.04%	1	49
35	Bugatti	1.82%	1	55
36	Alta	1.81%	7	387
37	OSCA	1.79%	1	56
38	Matra	1.62%	3	185
39	Delahaye	1.53%	2	131
40	Veritas	1.15%	1	87
41	Chevrolet	1.10%	5	453

Finishing position: