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	Renault	77.27%	17	22
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
	Novi	60.00%	6	10
	Scarab	60.00%	6	10
23	Alta	57.69%	45	78
24	Honda	56.52%	26	46
25	Aston Martin	54.55%	6	11
26	Offenhauser	53.28%	187	351
27	BMW	52.17%	12	23
28	Maserati	50.84%	272	535
29	Plate	50.00%	4	8
29	Speluzzi	50.00%	1	2
31	Talbot	49.38%	40	81
32	BRM	47.97%	366	763
33	Alfa Romeo	45.81%	82	179
34	Repco	45.57%	36	79
35	OSCA	43.75%	7	16
36	Bristol	42.55%	20	47
37	Castellotti	40.00%	2	5
38	Ford	39.91%	1161	2909
39	Climax	39.44%	312	791
40	Matra	36.21%	42	116
41	Mercedes	35.90%	14	39
42	Ferrari	34.12%	273	800
43	Porsche	18.99%	15	79

Finishing position: