12th Place Finish Ratio

until 2020 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	Acer	14.71%	5	34
3	BWT Mercedes	12.00%	6	50
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	4.14%	48	1159
12	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	Offenhauser	3.41%	12	352
19	Renault	3.05%	74	2428
20	Petronas	2.94%	9	306
	European	2.94%	1	34
	Simca	2.94%	1	34
23	Mercedes	2.90%	56	1934
24	Aston Martin	2.78%	1	36
25	Ferrari	2.78%	108	3890
26	Porsche	2.70%	5	185
27	Chevrolet	2.65%	12	453
28	Cosworth	2.59%	46	1777
29	Hart	2.58%	10	387
30	Ford	2.38%	164	6904
31	Veritas	2.30%	2	87
32	Delahaye	2.29%	3	131
33	Alfa Romeo	2.16%	17	786
34	Matra	2.16%	4	185
35	Megatron	2.13%	2	94
35	Frazer-Nash	2.13%	1	47
37	Playlife	2.04%	2	98
	Supertec	2.04%	2	98
	MG	2.04%	1	49
40	Climax	1.90%	40	2100
41	BRM	1.76%	20	1139
42	Mugen-Honda	1.70%	5	294
43	Bristol	1.65%	5	303
44	Arrows	1.56%	1	64
45	Judd	1.49%	6	403
46	Talbot-Lago	1.47%	5	339
47	Connaught	1.45%	2	138
48	Delage	1.39%	1	72
49	BMW	1.39%	12	866
50	Motori Moderni	1.25%	1	80
51	Talbot	1.22%	1	82
52	Alta	1.03%	4	387
53	Maserati	1.03%	17	1658
54	ERA	0.88%	2	227
55	Cisitalia	0.85%	1	117
56	Lea-Francis	0.83%	1	120
57	Simca-Gordini	0.60%	1	167
58	Repco	0.55%	1	181
59	Gordini	0.43%	1	232

Finishing position: