12th Place Finish Ratio

until 1977 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	12th Place Finish Ratio	12th Place Finishes	Entries
1	Smith-Chevrolet	20.00%	1	5
2	Francis	5.88%	2	34
3	Jaguar	5.56%	1	18
4	Amilcar	4.00%	1	25
5	Matra	3.88%	4	103
6	Riley	3.70%	2	54
7	Offenhauser	3.41%	12	352
8	Simca	2.94%	1	34
9	Porsche	2.89%	5	173
10	Aston Martin	2.78%	1	36
11	Chevrolet	2.44%	10	410
12	Veritas	2.30%	2	87
13	Delahaye	2.29%	3	131
14	Frazer-Nash	2.13%	1	47
15	MG	2.04%	1	49
16	Ford	2.00%	59	2944
17	Climax	1.90%	40	2100
18	BRM	1.77%	20	1132
19	Cosworth	1.67%	12	717
20	Bristol	1.65%	5	303
21	Talbot-Lago	1.47%	5	339
22	Connaught	1.45%	2	138
23	Delage	1.39%	1	72
24	Talbot	1.22%	1	82
25	Alfa Romeo	1.21%	5	413
26	Alta	1.03%	4	387
27	Maserati	1.03%	17	1658
28	ERA	0.88%	2	227
29	Cisitalia	0.85%	1	117
30	Lea-Francis	0.83%	1	120
31	Ferrari	0.78%	10	1287
32	Simca-Gordini	0.60%	1	167
33	BMW	0.56%	1	179
34	Repco	0.55%	1	181
35	Gordini	0.43%	1	232

Finishing position: