Retirement Ratio

Finishing position:

Pos	Car Manufacturer	Retirement Ratio	Retirements	Entries
1	Ferguson	200.00%	2	1
2	Balsa	100.00%	1	1
	Bugatti	100.00%	1	1
	Derrington-Francis	100.00%	1	1
	EMW	100.00%	1	1
	Greifzu	100.00%	1	1
	Klenk	100.00%	1	1
	Kurtis Kraft	100.00%	1	1
	Milano	100.00%	1	1
	Nacke	100.00%	1	1
	Politoys	100.00%	1	1
	Shannon	100.00%	1	1
	Tec-Mec	100.00%	1	1
14	ATS (Ita)	80.00%	8	10
14	Lancia	80.00%	8	10
16	Aston	75.00%	3	4
17	De Tomaso	72.22%	13	18
18	Simca-Gordini	68.97%	20	29
19	Eagle	68.57%	24	35
20	ERA	66.67%	8	12
	Scirocco	66.67%	6	9
	Alta	66.67%	4	6
	JBW	66.67%	4	6
24	Connaught	65.38%	34	52
25	Vanwall	65.15%	43	66
26	Tecno	64.29%	9	14
27	Williams	62.07%	18	29
28	Gordini	61.39%	62	101
29	Veritas	61.11%	11	18
30	Scarab	60.00%	6	10
31	Honda	56.52%	26	46
32	AFM	55.56%	5	9
33	Aston Martin	54.55%	6	11
34	HWM	52.08%	25	48
35	Maserati	50.99%	206	404
36	Iso Marlboro	50.88%	29	57
37	LDS	50.00%	4	8
	Boro	50.00%	3	6
	Frazer-Nash	50.00%	2	4
	Token	50.00%	2	4
	Connew	50.00%	1	2
	De Klerk	50.00%	1	2
	Pearce	50.00%	1	2
44	March	49.85%	169	339
45	Talbot-Lago	49.38%	40	81
46	BRM	48.09%	264	549
47	Shadow	47.62%	60	126
48	Ligier	46.67%	7	15
49	Parnelli	43.75%	7	16
50	Lotus	43.34%	319	736
51	Hill	42.86%	9	21
51	Emeryson	42.86%	3	7
53	Brabham	42.59%	227	533
54	BRP	42.11%	8	19
55	Hesketh	41.94%	26	62
56	Surtees	41.88%	80	191
57	Cooper	41.48%	219	528
58	Ensign	40.91%	18	44
59	Lola	39.71%	27	68
60	Penske	39.29%	11	28
61	Eifelland	37.50%	3	8
61	Trojan	37.50%	3	8
63	Mercedes	35.90%	14	39
64	Ferrari	34.93%	255	730
65	Alfa Romeo	33.33%	16	48
	Bellasi	33.33%	2	6
	Gilby	33.33%	2	6
68	McLaren	32.68%	100	306
69	Matra	30.77%	36	117
70	Fittipaldi	30.30%	10	33
71	Tyrrell	28.80%	53	184
72	OSCA	27.27%	3	11
73	Wolf-Williams	26.09%	6	23
74	Amon	25.00%	1	4
75	Porsche	20.00%	15	75

Finishing position: