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	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
19	Scarab	60.00%	6	10
21	BMW	59.46%	88	148
22	Alta	57.69%	45	78
23	Honda	57.50%	46	80
24	Renault	55.60%	149	268
25	Alfa Romeo	55.56%	220	396
26	Aston Martin	54.55%	6	11
27	Maserati	50.84%	272	535
28	Plate	50.00%	4	8
28	Speluzzi	50.00%	1	2
30	Talbot	49.38%	40	81
31	Hart	48.95%	70	143
32	BRM	47.91%	366	764
33	Repco	45.57%	36	79
34	TAG	45.45%	15	33
35	Matra	44.75%	81	181
36	OSCA	43.75%	7	16
37	Bristol	42.55%	20	47
38	Castellotti	40.00%	2	5
39	Climax	39.44%	312	791
40	Ford	39.21%	1718	4381
41	Mercedes	35.90%	14	39
42	Ferrari	33.85%	329	972
43	Porsche	18.99%	15	79

Finishing position: