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	Weslake	82.61%	19	23
10	Lancia	80.00%	8	10
11	Simca-Gordini	77.78%	14	18
12	Butterworth	75.00%	3	4
13	Pratt & Whitney	66.67%	2	3
14	Vanwall	65.15%	43	66
15	Tecno	64.29%	9	14
16	Francis	61.76%	21	34
17	Veritas	61.54%	8	13
18	Gordini	60.36%	67	111
19	ERA	60.00%	6	10
	Novi	60.00%	6	10
	Scarab	60.00%	6	10
22	BMW	59.46%	88	148
23	Alta	57.69%	45	78
24	Honda	57.50%	46	80
25	Renault	55.60%	149	268
26	Alfa Romeo	55.56%	220	396
27	Aston Martin	54.55%	6	11
28	Offenhauser	53.28%	187	351
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	Hart	48.95%	70	143
34	BRM	47.91%	366	764
35	Repco	45.57%	36	79
36	TAG	45.45%	15	33
37	Matra	44.75%	81	181
38	OSCA	43.75%	7	16
39	Bristol	42.55%	20	47
40	Castellotti	40.00%	2	5
41	Climax	39.44%	312	791
42	Ford	39.21%	1718	4381
43	Mercedes	35.90%	14	39
44	Ferrari	33.92%	330	973
45	Porsche	18.99%	15	79

Finishing position: