12th Place Finish Ratio

until 1973 British 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	Riley	3.70%	2	54
6	Offenhauser	3.41%	12	352
7	Simca	2.94%	1	34
8	Porsche	2.89%	5	173
9	Matra	2.78%	2	72
9	Aston Martin	2.78%	1	36
11	Veritas	2.30%	2	87
12	Delahaye	2.29%	3	131
13	Chevrolet	2.27%	7	308
14	Frazer-Nash	2.13%	1	47
15	MG	2.04%	1	49
16	Climax	1.90%	40	2100
17	BRM	1.71%	18	1051
18	Bristol	1.65%	5	303
19	Talbot-Lago	1.47%	5	339
20	Connaught	1.45%	2	138
21	Delage	1.39%	1	72
22	Ford	1.24%	18	1450
23	Talbot	1.22%	1	82
24	Alfa Romeo	1.13%	4	354
25	Cosworth	1.07%	4	373
26	Alta	1.03%	4	387
27	Maserati	1.03%	17	1658
28	ERA	0.88%	2	227
29	Ferrari	0.86%	10	1163
30	Cisitalia	0.85%	1	117
31	Lea-Francis	0.83%	1	120
32	Simca-Gordini	0.60%	1	167
33	BMW	0.57%	1	176
34	Repco	0.55%	1	181
35	Gordini	0.43%	1	232

Finishing position: