Retirement Ratio

Finishing position:

Pos	Engine Manufacturer	Retirement Ratio	Retirements	Entries
1	Milano	100.00%	3	3
	Bugatti	100.00%	1	1
	Jaguar	100.00%	1	1
	JAP	100.00%	1	1
	Kuchen	100.00%	1	1
	Offenhauser	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
21	Scarab	60.00%	6	10
23	Alfa Romeo	58.86%	299	508
24	Alta	57.69%	45	78
25	Hart	57.37%	218	380
26	Supertec	55.10%	54	98
27	Zakspeed	54.81%	57	104
28	Aston Martin	54.55%	6	11
29	Megatron	53.19%	50	94
30	Maserati	50.84%	272	535
31	European	50.00%	17	34
	Plate	50.00%	4	8
	Speluzzi	50.00%	1	2
34	Talbot	49.38%	40	81
35	Peugeot	49.13%	113	230
36	Yamaha	48.46%	126	260
37	BRM	47.91%	366	764
38	Ilmor	47.50%	76	160
39	Repco	45.57%	36	79
40	Matra	44.75%	81	181
41	OSCA	43.75%	7	16
41	Osella	43.75%	7	16
43	Asiatech	42.65%	29	68
44	Lamborghini	42.58%	109	256
45	Bristol	42.55%	20	47
46	Judd	40.94%	165	403
47	BMW	40.88%	287	702
48	Castellotti	40.00%	2	5
49	Ford	39.81%	2546	6395
50	Mugen-Honda	39.80%	117	294
51	Climax	39.44%	312	791
52	TAG	36.30%	49	135
53	Fondmetal	35.29%	12	34
54	Cosworth	33.64%	290	862
55	Acer	32.35%	11	34
56	Petronas	32.03%	98	306
57	Playlife	31.63%	31	98
58	Honda	30.97%	363	1172
59	Renault	28.49%	696	2443
60	Ferrari	27.05%	915	3382
61	Toyota	23.97%	110	459
62	Porsche	21.98%	20	91
63	Mecachrome	21.88%	7	32
64	TAG-Heuer	20.97%	26	124
65	Mercedes	17.57%	342	1946
66	BWT Mercedes	8.62%	5	58

Finishing position: