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	Pratt & Whitney	66.67%	2	3
15	Vanwall	65.15%	43	66
16	Tecno	64.29%	9	14
17	Francis	61.76%	21	34
18	Veritas	61.54%	8	13
19	Gordini	60.36%	67	111
20	ERA	60.00%	6	10
20	Scarab	60.00%	6	10
22	Alfa Romeo	58.86%	299	508
23	BMW	57.91%	205	354
24	Hart	57.71%	202	350
25	Alta	57.69%	45	78
26	Zakspeed	54.81%	57	104
27	Aston Martin	54.55%	6	11
28	Megatron	53.19%	50	94
29	Maserati	50.84%	272	535
30	Plate	50.00%	4	8
30	Speluzzi	50.00%	1	2
32	Talbot	49.38%	40	81
33	Peugeot	49.02%	50	102
34	BRM	47.91%	366	764
35	Yamaha	47.83%	110	230
36	Ilmor	47.50%	76	160
37	Repco	45.57%	36	79
38	Matra	44.75%	81	181
39	OSCA	43.75%	7	16
39	Osella	43.75%	7	16
41	Lamborghini	42.58%	109	256
42	Bristol	42.55%	20	47
43	Renault	42.09%	386	917
44	Judd	40.94%	165	403
45	Mercedes	40.71%	57	140
46	Castellotti	40.00%	2	5
47	Mugen-Honda	39.76%	66	166
48	Climax	39.44%	312	791
49	Ford	39.32%	2428	6175
50	Ferrari	37.72%	550	1458
51	TAG	36.30%	49	135
52	Honda	35.39%	155	438
53	Petronas	25.00%	1	4
54	Porsche	21.98%	20	91

Finishing position: