12th Place Finish Ratio

until 2019 Azerbaijan GP

Include 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	BWT Mercedes	12.50%	1	8
4	Fondmetal	8.82%	3	34
5	Toyota	6.32%	29	459
6	Osella	6.25%	1	16
7	Asiatech	5.88%	4	68
7	Francis	5.88%	2	34
9	Jaguar	5.56%	1	18
10	Lamborghini	5.47%	14	256
11	Honda	4.00%	43	1075
11	Amilcar	4.00%	1	25
13	Peugeot	3.86%	10	259
14	Zakspeed	3.85%	4	104
15	Ilmor	3.75%	6	160
16	Riley	3.70%	2	54
17	Yamaha	3.46%	9	260
18	Mercedes	2.97%	55	1850
19	Renault	2.94%	69	2344
20	Petronas	2.94%	9	306
	European	2.94%	1	34
	Simca	2.94%	1	34
23	Aston Martin	2.78%	1	36
24	Ferrari	2.74%	103	3763
25	Porsche	2.70%	5	185
26	Chevrolet	2.65%	12	453
27	Cosworth	2.59%	46	1777
28	Hart	2.58%	10	387
29	Ford	2.38%	164	6904
30	Veritas	2.30%	2	87
31	Delahaye	2.29%	3	131
32	Alfa Romeo	2.16%	17	786
33	Matra	2.16%	4	185
34	Megatron	2.13%	2	94
34	Frazer-Nash	2.13%	1	47
36	Playlife	2.04%	2	98
	Supertec	2.04%	2	98
	MG	2.04%	1	49
39	Climax	1.90%	40	2100
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: