15th Place Finish Ratio

until 2015 Italian 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	Cosworth	2.42%	43	1777
15	Connaught	2.17%	3	138
16	Yamaha	1.92%	5	260
17	Renault	1.86%	39	2094
18	OSCA	1.79%	1	56
19	Ferrari	1.77%	58	3284
20	Honda	1.74%	16	921
21	Mugen-Honda	1.70%	5	294
22	Matra	1.62%	3	185
23	Arrows	1.56%	1	64
24	Mercedes	1.47%	20	1364
25	Hart	1.29%	5	387
26	Ilmor	1.25%	2	160
27	Chevrolet	1.10%	5	453
28	Porsche	1.08%	2	185
29	Alta	1.03%	4	387
30	Ford	0.98%	68	6904
31	Zakspeed	0.96%	1	104
32	Climax	0.90%	19	2100
33	Lea-Francis	0.83%	1	120
34	Peugeot	0.77%	2	259
35	Alfa Romeo	0.76%	6	786
35	Delahaye	0.76%	1	131
37	Judd	0.74%	3	403
38	TAG	0.74%	1	135
39	BRM	0.70%	8	1139
40	Bristol	0.66%	2	303
41	Simca-Gordini	0.60%	1	167
42	BMW	0.46%	4	866
43	ERA	0.44%	1	227
44	Petronas	0.33%	1	306
45	Talbot-Lago	0.29%	1	339
46	Maserati	0.24%	4	1658

Finishing position: