15th Place Finish Ratio

until 2021 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	15th Place Finish Ratio	15th Place Finishes	Entries
1	Castellotti	20.00%	1	5
1	Smith-Chevrolet	20.00%	1	5
3	Fondmetal	14.71%	5	34
4	DB	10.00%	1	10
4	Novi	10.00%	1	10
6	ATS (Ita)	7.69%	1	13
7	Toyota	5.66%	26	459
8	Offenhauser	3.12%	11	352
8	Mecachrome	3.12%	1	32
10	Supertec	3.06%	3	98
11	Asiatech	2.94%	2	68
	Acer	2.94%	1	34
	European	2.94%	1	34
14	Ferrari	2.76%	111	4022
15	Cosworth	2.42%	43	1777
16	Renault	2.24%	56	2498
17	Connaught	2.17%	3	138
18	Mercedes	2.09%	43	2058
19	Honda	2.00%	25	1247
20	Yamaha	1.92%	5	260
21	OSCA	1.79%	1	56
22	Mugen-Honda	1.70%	5	294
23	Matra	1.62%	3	185
24	TAG-Heuer	1.61%	2	124
25	Arrows	1.56%	1	64
26	BWT Mercedes	1.32%	1	76
27	Hart	1.29%	5	387
28	Ilmor	1.25%	2	160
29	Chevrolet	1.10%	5	453
30	Porsche	1.08%	2	185
31	Alta	1.03%	4	387
32	Ford	0.98%	68	6904
33	Zakspeed	0.96%	1	104
34	Climax	0.90%	19	2100
35	Lea-Francis	0.83%	1	120
36	Peugeot	0.77%	2	259
37	Alfa Romeo	0.76%	6	786
37	Delahaye	0.76%	1	131
39	Judd	0.74%	3	403
40	TAG	0.74%	1	135
41	BRM	0.70%	8	1139
42	Bristol	0.66%	2	303
43	Simca-Gordini	0.60%	1	167
44	BMW	0.46%	4	866
45	ERA	0.44%	1	227
46	Petronas	0.33%	1	306
47	Talbot-Lago	0.29%	1	339
48	Maserati	0.24%	4	1658

Finishing position: