13th Place Finish Ratio

until 1977 South African 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	Car Manufacturer	13th Place Finish Ratio	13th Place Finishes	Entries
1	Willment	50.00%	1	2
2	Dunn	33.33%	1	3
3	Boro	16.67%	1	6
3	Trevis	16.67%	1	6
5	RRA	14.29%	2	14
	HW	14.29%	1	7
	Lyncar	14.29%	1	7
8	McRae	12.50%	1	8
9	Eifelland	11.11%	1	9
9	Maki	11.11%	1	9
11	Kuzma	10.81%	4	37
12	Wolf-Williams	8.00%	2	25
13	Aiden-Cooper	7.69%	1	13
14	Fittipaldi	7.50%	3	40
15	JBW	6.25%	1	16
16	Ensign	5.45%	3	55
17	Hill	4.35%	1	23
17	Turner	4.35%	1	23
19	Honda	4.17%	2	48
20	HAR	4.00%	1	25
21	Aston Martin	3.85%	1	26
22	Porsche	3.82%	6	157
23	Gilby	3.33%	1	30
24	Hesketh	2.82%	2	71
25	Lola	2.31%	8	346
26	MG	2.17%	1	46
27	March	2.15%	10	466
28	Kurtis Kraft	2.06%	4	194
29	Shadow	2.03%	3	148
30	LDS	2.00%	3	150
31	Bugatti	1.79%	1	56
32	ERA	1.75%	4	229
33	BRM	1.52%	12	788
34	Cooper	1.46%	23	1579
35	Delage	1.39%	1	72
36	Alta	1.30%	1	77
37	Surtees	1.29%	5	388
38	Lotus	1.28%	22	1721
39	McLaren	1.22%	8	658
40	Talbot-Lago	1.19%	5	420
41	BMW	1.12%	1	89
41	Veritas	1.12%	1	89
43	Brabham	1.08%	10	924
44	Connaught	0.93%	3	323
45	Chevron	0.87%	1	115
46	Matra	0.74%	1	135
47	HWM	0.56%	1	179
48	Ferrari	0.56%	7	1260
49	Gordini	0.45%	1	222
50	Tyrrell	0.44%	1	229
51	Maserati	0.29%	4	1393

Finishing position: