15th Place Finish Ratio

until 1988 Mexican 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	Car Manufacturer	15th Place Finish Ratio	15th Place Finishes	Entries
1	Heck	50.00%	1	2
1	Modus	50.00%	1	2
3	ATS (Ita)	10.00%	1	10
4	Hill	8.70%	2	23
5	Gilby	6.67%	2	30
5	Lyncar	6.67%	1	15
7	Spirit	3.85%	1	26
8	DB	3.12%	1	32
9	De Klerk	2.78%	1	36
9	OSCA	2.78%	1	36
11	Matra	2.22%	3	135
12	Hesketh	1.85%	2	108
13	Ensign	1.79%	3	168
14	HWM	1.68%	3	179
15	Iso Marlboro	1.67%	1	60
16	Emeryson	1.28%	1	78
17	Porsche	1.27%	2	157
18	Arrows	1.25%	4	320
18	Zakspeed	1.25%	1	80
20	Connaught	1.24%	4	323
21	Fittipaldi	1.23%	2	162
22	March	1.20%	8	669
23	Shadow	1.15%	3	262
24	Surtees	1.02%	5	488
25	Cooper	0.95%	15	1579
26	BRM	0.88%	7	797
27	Lola	0.86%	4	465
28	Williams	0.80%	3	373
29	Delahaye	0.76%	1	131
29	Toleman	0.76%	1	131
31	ATS	0.68%	1	148
32	McLaren	0.66%	7	1060
33	Lotus	0.62%	13	2104
34	Ligier	0.60%	2	333
35	Alfa Romeo	0.59%	2	341
36	Simca-Gordini	0.56%	1	178
37	Osella	0.52%	1	194
38	ERA	0.44%	1	229
39	Ferrari	0.44%	7	1604
40	Brabham	0.39%	5	1274
41	Talbot-Lago	0.24%	1	420
42	Maserati	0.22%	3	1390
43	Tyrrell	0.17%	1	582

Finishing position: