Retirement Ratio

1975 Belgian GP
1976 Monaco GP

until 1975 Monaco GP

Ignore Indy 500 races
Ignore non-championship races
Note: records involving non-championship races may be inaccurate due to incomplete data.

Finishing position:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ret dsq dpts cpts

Pos	Engine Manufacturer	Retirement Ratio	Retirements	Entries
1	Emeryson	100.00%	3	3
	Cummins	100.00%	2	2
	Platè	100.00%	2	2
	Studebaker	100.00%	2	2
	Ardun	100.00%	1	1
	ATS	100.00%	1	1
	Ausper	100.00%	1	1
	CTA	100.00%	1	1
	Dodge	100.00%	1	1
	Eclipse	100.00%	1	1
	Falconer & Dunn-Ford	100.00%	1	1
	Giaur	100.00%	1	1
	GK	100.00%	1	1
	Guyot	100.00%	1	1
	Jicey	100.00%	1	1
	Lombard	100.00%	1	1
	Lucas-Chevrolet	100.00%	1	1
	MacKay	100.00%	1	1
	Orley	100.00%	1	1
	Patterson	100.00%	1	1
	Pozzoli	100.00%	1	1
	PS	100.00%	1	1
	Ricardian	100.00%	1	1
	Stanguellini	100.00%	1	1
	Summer	100.00%	1	1
	Vitesse	100.00%	1	1
27	AFM	87.50%	7	8
28	ATS (Ita)	84.62%	11	13
29	Weslake	76.00%	19	25
30	Hudson	75.00%	3	4
31	Pratt & Whitney	66.67%	4	6
31	Corvette	66.67%	2	3
33	Francis	61.76%	21	34
34	Salmson	60.00%	9	15
	Tecno	60.00%	9	15
	Novi	60.00%	6	10
	Singer	60.00%	3	5
38	Citroën	58.82%	10	17
39	Vanwall	56.67%	51	90
40	Honda	56.25%	27	48
41	Milano	55.56%	5	9
42	Veritas	55.17%	48	87
43	Scarab	54.55%	6	11
44	Offenhauser	53.12%	187	352
45	Lancia	51.43%	18	35
46	Talbot	50.00%	41	82
	Jaguar	50.00%	9	18
	Plate	50.00%	4	8
	Steyr	50.00%	2	4
	Allard	50.00%	1	2
	BNC	50.00%	1	2
	de Coucy	50.00%	1	2
	Monaci	50.00%	1	2
54	Simca-Gordini	49.70%	83	167
55	Gordini	49.14%	114	232
56	Bugatti	49.09%	27	55
57	Fiat	47.37%	9	19
58	BDA	45.45%	5	11
59	Lotus	44.83%	39	87
60	BRM	44.16%	495	1121
61	JAP	43.90%	18	41
62	Cisitalia	42.74%	50	117
63	Maserati	42.70%	708	1658
64	MG	40.82%	20	49
65	Kuchen	40.00%	4	10
65	Castellotti	40.00%	2	5
67	Alta	38.76%	150	387
68	Ford	38.72%	817	2110
69	Kollektiv	37.50%	3	8
70	ERA	37.00%	84	227
71	Butterworth	36.84%	7	19
72	Amilcar	36.00%	9	25
73	BMW	35.80%	63	176
74	Repco	35.36%	64	181
75	Riley	35.19%	19	54
76	Borgward	34.38%	11	32
77	Frazer-Nash	34.04%	16	47
78	Matra	33.33%	24	72
	Aston Martin	33.33%	12	36
	Austin	33.33%	1	3
	BMC	33.33%	1	3
	Buick	33.33%	1	3
	Cadillac	33.33%	1	3
	Rapier	33.33%	1	3
	Speluzzi	33.33%	1	3
86	Climax	33.14%	696	2100
87	Mercedes	32.56%	14	43
88	Ferrari	32.29%	391	1211
89	Chevrolet	32.28%	122	378
90	Delage	31.94%	23	72
91	Alfa Romeo	31.92%	113	354
92	Talbot-Lago	31.27%	106	339
93	DB	30.00%	3	10
94	Simca	29.41%	10	34
95	OSCA	26.79%	15	56
96	FVC	26.73%	27	101
97	Rover	26.67%	4	15
98	Bristol	25.41%	77	303
99	Alvis	25.00%	1	4
	Lagonda	25.00%	1	4
	Lycoming	25.00%	1	4
	Martin	25.00%	1	4
103	Lea-Francis	24.17%	29	120
104	Cosworth	23.85%	130	545
105	Delahaye	22.90%	30	131
106	Connaught	21.01%	29	138
107	Peugeot	20.69%	6	29
108	Smith-Chevrolet	20.00%	1	5
109	Porsche	16.76%	29	173
110	Panhard	16.67%	1	6
110	Vincent	16.67%	1	6

Finishing position:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 ret dsq dpts cpts