Retirement Ratio

Finishing position:

Pos	Engine Manufacturer	Retirement Ratio	Retirements	Entries
1	Milano	100.00%	3	3
	Cummins	100.00%	2	2
	Bugatti	100.00%	1	1
	Jaguar	100.00%	1	1
	JAP	100.00%	1	1
	Kuchen	100.00%	1	1
	Simca	100.00%	1	1
8	ATS (Ita)	84.62%	11	13
9	Motori Moderni	83.75%	67	80
10	Weslake	82.61%	19	23
11	Lancia	80.00%	8	10
12	Simca-Gordini	77.78%	14	18
13	Butterworth	75.00%	3	4
14	Arrows	68.75%	44	64
15	Pratt & Whitney	66.67%	2	3
16	Vanwall	65.15%	43	66
17	Tecno	64.29%	9	14
18	Francis	61.76%	21	34
19	Veritas	61.54%	8	13
20	Gordini	60.36%	67	111
21	ERA	60.00%	6	10
	Novi	60.00%	6	10
	Scarab	60.00%	6	10
24	Alfa Romeo	58.86%	299	508
25	Alta	57.69%	45	78
26	Hart	57.37%	218	380
27	Supertec	55.10%	54	98
28	Zakspeed	54.81%	57	104
29	Aston Martin	54.55%	6	11
30	Offenhauser	53.28%	187	351
31	Megatron	53.19%	50	94
32	Maserati	50.84%	272	535
33	European	50.00%	17	34
	Plate	50.00%	4	8
	Speluzzi	50.00%	1	2
36	Talbot	49.38%	40	81
37	Peugeot	49.13%	113	230
38	Yamaha	48.46%	126	260
39	BRM	47.91%	366	764
40	Ilmor	47.50%	76	160
41	Repco	45.57%	36	79
42	Matra	44.75%	81	181
43	OSCA	43.75%	7	16
43	Osella	43.75%	7	16
45	Asiatech	42.65%	29	68
46	Lamborghini	42.58%	109	256
47	Bristol	42.55%	20	47
48	Judd	40.94%	165	403
49	BMW	40.88%	287	702
50	Castellotti	40.00%	2	5
51	Ford	39.81%	2546	6395
52	Mugen-Honda	39.80%	117	294
53	Climax	39.44%	312	791
54	Cosworth	38.48%	254	660
55	TAG	36.30%	49	135
56	Fondmetal	35.29%	12	34
57	Renault	34.64%	520	1501
58	Honda	34.34%	307	894
59	Ferrari	32.37%	730	2255
60	Acer	32.35%	11	34
61	Petronas	32.03%	98	306
62	Playlife	31.63%	31	98
63	Mercedes	25.82%	205	794
64	Toyota	23.97%	110	459
65	Porsche	21.98%	20	91
66	Mecachrome	21.88%	7	32

Finishing position: