12th Place Finish Ratio

until 1971 Canadian 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	Francis	5.88%	2	34
2	Jaguar	5.56%	1	18
3	Amilcar	4.00%	1	25
4	Riley	3.70%	2	54
5	Offenhauser	3.41%	12	352
6	Simca	2.94%	1	34
7	Porsche	2.89%	5	173
8	Aston Martin	2.78%	1	36
9	Veritas	2.30%	2	87
10	Delahaye	2.29%	3	131
11	Frazer-Nash	2.13%	1	47
12	MG	2.04%	1	49
13	Chevrolet	1.94%	3	155
14	Climax	1.90%	40	2100
15	Matra	1.72%	1	58
16	Bristol	1.65%	5	303
17	BRM	1.59%	15	941
18	Talbot-Lago	1.47%	5	339
19	Connaught	1.45%	2	138
20	Delage	1.39%	1	72
21	Cosworth	1.25%	3	240
22	Talbot	1.22%	1	82
23	Alfa Romeo	1.13%	4	353
24	Alta	1.03%	4	387
25	Maserati	1.03%	17	1658
26	Ford	0.98%	9	919
27	ERA	0.88%	2	227
28	Cisitalia	0.85%	1	117
29	Lea-Francis	0.83%	1	120
30	Simca-Gordini	0.60%	1	167
31	BMW	0.57%	1	176
32	Repco	0.56%	1	180
33	Ferrari	0.54%	6	1115
34	Gordini	0.43%	1	232

Finishing position: