12th Place Finish Ratio

until 2014 Australian 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	Acer	14.71%	5	34
3	Fondmetal	8.82%	3	34
4	Toyota	6.32%	29	459
5	Osella	6.25%	1	16
6	Asiatech	5.88%	4	68
6	Francis	5.88%	2	34
8	Jaguar	5.56%	1	18
9	Lamborghini	5.47%	14	256
10	Amilcar	4.00%	1	25
11	Peugeot	3.86%	10	259
12	Zakspeed	3.85%	4	104
13	Ilmor	3.75%	6	160
14	Riley	3.70%	2	54
15	Yamaha	3.46%	9	260
16	Offenhauser	3.41%	12	352
17	Petronas	2.94%	9	306
	European	2.94%	1	34
	Simca	2.94%	1	34
20	Mercedes	2.85%	32	1124
21	Honda	2.79%	25	897
22	Aston Martin	2.78%	1	36
23	Porsche	2.70%	5	185
24	Chevrolet	2.65%	12	453
25	Cosworth	2.59%	46	1777
26	Hart	2.58%	10	387
27	Ferrari	2.44%	76	3110
28	Ford	2.38%	164	6904
29	Veritas	2.30%	2	87
30	Delahaye	2.29%	3	131
31	Alfa Romeo	2.16%	17	786
32	Matra	2.16%	4	185
33	Megatron	2.13%	2	94
33	Frazer-Nash	2.13%	1	47
35	Playlife	2.04%	2	98
	Supertec	2.04%	2	98
	MG	2.04%	1	49
38	Climax	1.90%	40	2100
39	Renault	1.89%	36	1906
40	BRM	1.76%	20	1139
41	Mugen-Honda	1.70%	5	294
42	Bristol	1.65%	5	303
43	Arrows	1.56%	1	64
44	Judd	1.49%	6	403
45	Talbot-Lago	1.47%	5	339
46	Connaught	1.45%	2	138
47	Delage	1.39%	1	72
48	BMW	1.39%	12	866
49	Motori Moderni	1.25%	1	80
50	Talbot	1.22%	1	82
51	Alta	1.03%	4	387
52	Maserati	1.03%	17	1658
53	ERA	0.88%	2	227
54	Cisitalia	0.85%	1	117
55	Lea-Francis	0.83%	1	120
56	Simca-Gordini	0.60%	1	167
57	Repco	0.55%	1	181
58	Gordini	0.43%	1	232

Finishing position: