12th Place Finish Ratio

until 1964 United States 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	12th Place Finish Ratio	12th Place Finishes	Entries
1	Cosworth	11.11%	1	9
2	Francis	5.88%	2	34
3	Jaguar	5.56%	1	18
4	Amilcar	4.00%	1	25
5	Riley	3.70%	2	54
6	Offenhauser	3.41%	12	352
7	Simca	2.94%	1	34
8	Porsche	2.91%	5	172
9	Aston Martin	2.78%	1	36
10	Veritas	2.30%	2	87
11	Delahaye	2.29%	3	131
12	Climax	2.26%	39	1723
13	Frazer-Nash	2.13%	1	47
14	MG	2.04%	1	49
15	Bristol	1.65%	5	303
16	Talbot-Lago	1.47%	5	339
17	Connaught	1.45%	2	138
18	Delage	1.39%	1	72
19	Talbot	1.22%	1	82
20	BRM	1.20%	6	501
21	Ford	1.18%	1	85
22	Alta	1.03%	4	387
23	Maserati	0.97%	15	1548
24	ERA	0.88%	2	227
25	Cisitalia	0.85%	1	117
26	Lea-Francis	0.83%	1	120
27	Simca-Gordini	0.60%	1	167
28	BMW	0.59%	1	170
29	Ferrari	0.53%	5	935
30	Gordini	0.43%	1	232

Finishing position: