12th Place Finish Ratio

until 1970 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	Chevrolet	2.53%	2	79
10	Veritas	2.30%	2	87
11	Delahaye	2.29%	3	131
12	Frazer-Nash	2.13%	1	47
13	MG	2.04%	1	49
14	Climax	1.90%	40	2100
15	Bristol	1.65%	5	303
16	Talbot-Lago	1.47%	5	339
17	BRM	1.47%	13	885
18	Connaught	1.45%	2	138
19	Delage	1.39%	1	72
20	Talbot	1.22%	1	82
21	Alta	1.03%	4	387
22	Maserati	1.03%	17	1658
23	ERA	0.88%	2	227
24	Cisitalia	0.85%	1	117
25	Lea-Francis	0.83%	1	120
26	Cosworth	0.75%	1	133
27	Simca-Gordini	0.60%	1	167
28	Alfa Romeo	0.59%	2	340
29	Repco	0.58%	1	173
30	Ford	0.57%	4	696
31	BMW	0.57%	1	176
32	Ferrari	0.56%	6	1079
33	Gordini	0.43%	1	232

Finishing position: